UEDA GROUP

Department of Physics, The University of Tokyo

- "Sparsity by Redundancy: Solving L1 with SGD"

Liu Ziyin, Zihao Wang

To be published in International Conference on Machine Learning 2023

- "On the stepwise nature of self-supervised learning"

James B. Simon, Maksis Knutins, Liu Ziyin, Daniel Geisz, Abraham J. Fetterman, Joshua Albrecht

To be published in International Conference on Machine Learning 2023

- "Observation of the Sign Reversal of the Magnetic Correlation in a Driven-Dissipative Fermi Gas in Double Wells"

Kantaro Honda, Shintaro Taie, Yosuke Takasu, Naoki Nishizawa, Masaya Nakagawa, and Yoshiro Takahashi

Phys. Rev. Lett. 130, 063001 (2023).

- "Universal thermodynamic uncertainty relation in nonequilibrium dynamics"

Liu Ziyin and Masahito Ueda

Phys. Rev. Research 5, 013039 (2023).

- "What shapes the loss landscape of self-supervised learning?"

Liu Ziyin, Ekdeep Singh Lubana, Masahito Ueda, Hidenori Tanaka

To be published in International Conference on Learning Representations 2023 (ICLR 2023)

- "Nonlinear Landauer formula: Nonlinear response theory of disordered and topological materials"

Kohei Kawabata and Masahito Ueda

Phys. Rev. B 106, 205104 (2022).

- "Embedding the Yang-Lee quantum criticality in open quantum systems"

Norifumi Matsumoto, Masaya Nakagawa, and Masahito Ueda

Phys. Rev. Research 4, 033250 (2022).

- "Three learning stages and accuracy-efficiency tradeoff of restricted
Boltzmann machines"

Lennart Dabelow and Masahito Ueda

Nat. Commun. 13, 5474 (2022).

- "Exact Solutions of a Deep Linear Network"

Liu Ziyin, Botao Li, Xiangming Meng

Neural Information Processing Systems (NeurIPS2022).

- "Posterior Collapse of a Linear Latent Variable Model"

Zihao Wang*, Liu Ziyin*

Neural Information Processing Systems (NeurIPS2022). [Oral]

- "Eigenstate Thermalization in Long-Range Interacting Systems"

Shoki Sugimoto, Ryusuke Hamazaki, and Masahito Ueda

Phys. Rev. Lett. 129, 030602 (2022)

- "Power-law escape rate of SGD"

Takashi Mori, Liu Ziyin, Kangqiao Liu, and Masahito Ueda

Proceedings of the 39th International Conference on Machine Learning, PMLR 162:15959-15975, 2022 (ICML 2022)

- "Universal properties of dissipative Tomonaga-Luttinger liquids: Case study of a non-Hermitian XXZ spin chain"

Kazuki Yamamoto, Masaya Nakagawa, Masaki Tezuka, Masahito Ueda, and Norio Kawakami

Phys. Rev. B 105, 205125 (2022)

- "Vortex lattices in binary Bose-Einstein condensates: Collective modes, quantum fluctuations, and intercomponent entanglement"

Takumi Yoshino, Shunsuke Furukawa, and Masahito Ueda

J. Phys. B: At. Mol. Opt. Phys. 55, 105302 (2022)

- "SGD Can Converge to Local Maxima"

Liu Ziyin, Botao Li, James B. Simon, and Masahito Ueda

International Conference on Learning Representations 2022 (ICLR 2022) [Spotlight]

- "Strength of Minibatch Noise in SGD"

Liu Ziyin*, Kangqiao Liu*, Takashi Mori, and Masahito Ueda

International Conference on Learning Representations 2022 (ICLR 2022) [Spotlight]

- "Convergent and Efficient Deep Q Learning Algorithm"

Zhikang T. Wang and Masahito Ueda

International Conference on Learning Representations 2022 (ICLR 2022)

- "Renormalization group analysis on emergence of higher rank symmetry and higher moment conservation"

Hongchao Li and Peng Ye

Phys. Rev. Research 3, 043176 (2021)

- "Entropy production of a closed Hamiltonian system via the detailed fluctuation relation"

Yûto Murashita, Naoto Kura, and Masahito Ueda

Phys. Rev. Research 3, 033224 (2021)

- "Liouvillian Skin Effect: Slowing Down of Relaxation Processes without Gap Closing"

Taiki Haga, Masaya Nakagawa, Ryusuke Hamazaki, and Masahito Ueda

Phys. Rev. Lett. 127, 070402 (2021)

- "Collective Excitations and Nonequilibrium Phase Transition in Dissipative Fermionic Superfluids"

Kazuki Yamamoto, Masaya Nakagawa, Naoto Tsuji, Masahito Ueda, and Norio Kawakami

Phys. Rev. Lett. 127, 055301 (2021)

- "On the Distributional Properties of Adaptive Gradients"

Zhang Zhiyi and Liu Ziyin

The 37th Conference on Uncertainty in Artificial Intelligence (UAI 2021)

- "Noise and Fluctuation of Finite Learning Rate Stochastic Gradient Descent"

Kangqiao Liu*, Liu Ziyin*, and Masahito Ueda

Proceedings of the 38th International Conference on Machine Learning, PMLR 139:7045-7056, 2021 (ICML 2021)

- "Topological Field Theory of Non-Hermitian Systems"

Kohei Kawabata, Ken Shiozaki, and Shinsei Ryu

Phys. Rev. Lett. 126, 216405 (2021) [selected for Editors' Suggestion]

- "Nonunitary Scaling Theory of Non-Hermitian Localization"

Kohei Kawabata and Shinsei Ryu

Phys. Rev. Lett. 126, 166801 (2021)

- "Intercomponent entanglement entropy and spectrum in binary Bose-Einstein condensates"

Takumi Yoshino, Shunsuke Furukawa, and Masahito Ueda

Phys. Rev. A 103, 043321 (2021)

- "Test of Eigenstate Thermalization Hypothesis Based on Local Random Matrix Theory"

Shoki Sugimoto, Ryusuke Hamazaki, and Masahito Ueda

Phys. Rev. Lett. 126, 120602 (2021)

- "Exact Liouvillian Spectrum of a One-Dimensional Dissipative Hubbard Model"

Masaya Nakagawa, Norio Kawakami, and Masahito Ueda

Phys. Rev. Lett. 126, 110404 (2021)

- "Non-hermitian physics."

Yuto Ashida, Zongping Gong, and Masahito Ueda

Advances in Physics 69.3: 249-435. (2020)

- "Neural Networks Fail to Learn Periodic Functions and How to Fix It"

Liu Ziyin, Tilman Hartwig, and Masahito Ueda

Advances in Neural Information Processing Systems 33 (NeurIPS 2020)

- "Continuous Phase Transition without Gap Closing in Non-Hermitian Quantum Many-Body Systems"

Norifumi Matsumoto, Kohei Kawabata, Yuto Ashida, Shunsuke Furukawa, and Masahito Ueda

Phys. Rev. Lett. 125, 260601 (2020)

- "Effective temperature of a superfluid flowing in a random potential"

Taiki Haga and Masahito Ueda

Phys. Rev. Research 2, 043316 (2020)

- "Higher-order non-Hermitian skin effect"

Kohei Kawabata, Masatoshi Sato, and Ken Shiozaki

Phys. Rev. B 102, 205118 (2020) [selected for Editors' Suggestion]

- "Quantum Equilibration, Thermalization and Prethermalization in Ultracold Atoms"

Masahito Ueda

Nat. Rev. Phys. 2, 669 (2020)

- "Thermodynamic Uncertainty Relation for Arbitrary Initial States"

Kangqiao Liu, Zongping Gong, and Masahito Ueda

Phys. Rev. Lett. 125, 140602 (2020)

- "Real spectra in non-Hermitian topological insulators"

Kohei Kawabata and Masatoshi Sato

Phys. Rev. Research 2, 033391 (2020)

- "Probing XY phase transitions in a Josephson junction array with tunable frustration"

R. Cosmic, K. Kawabata, Y. Ashida, H. Ikegami, S. Furukawa, P. Patil, J. M. Taylor, and Y. Nakamura

Phys. Rev. B 102, 094509 (2020)

- "Deep Reinforcement Learning Control of Quantum Cartpoles"

Zhikang T. Wang, Yuto Ashida, and Masahito Ueda

Phys. Rev. Lett. 125, 100401 (2020)

- "Magnetic Solitons in a Spin-1 Bose-Einstein Condensate"

Xiao Chai, Di Lao, Kazuya Fujimoto, Ryusuke Hamazaki, Masahito Ueda, and Chandra Raman

Phys. Rev. Lett. 125, 030402 (2020) [selected as Editors' Suggestion]

See also Synopsis: Physics 13, s90 by Christopher Crockett

- "Universality classes of non-Hermitian random matrices"

Ryusuke Hamazaki, Kohei Kawabata, Naoto Kura, and Masahito Ueda

Phys. Rev. Research 2, 023286 (2020)

- "Non-Bloch band theory of non-Hermitian Hamiltonians in the symplectic class"

Kohei Kawabata, Nobuyuki Okuma, and Masatoshi Sato

Phys. Rev. B 101, 195147 (2020)

- "Error bounds for constrained dynamics in gapped quantum systems: Rigorous results and generalizations"

Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata, and Ryusuke Hamazaki

Phys. Rev. A 101, 052122 (2020)

- "Universal Error Bound for Constrained Quantum Dynamics"

Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata, and Ryusuke Hamazaki

Phys. Rev. Lett. 124, 210606 (2020)

- "Family-Vicsek Scaling of Roughness Growth in a Strongly Interacting Bose Gas"

Kazuya Fujimoto, Ryusuke Hamazaki, and Yuki Kawaguchi

Phys. Rev. Lett. 124, 210604 (2020)

- "Dynamical Sign Reversal of Magnetic Correlations in Dissipative Hubbard Models"

Masaya Nakagawa, Naoto Tsuji, Norio Kawakami, and Masahito Ueda

Phys. Rev. Lett. 124, 147203 (2020)

- "Classification of Matrix-Product Unitaries with Symmetries"

Zongping Gong, Christoph Sünderhauf, Norbert Schuch, and J. Ignacio Cirac

Phys. Rev. Lett. 124, 100402 (2020)

- "Morphological Superfluid in a Nonmagnetic Spin-2 Bose-Einstein Condensate"

Emi Yukawa and Masahito Ueda

Phys. Rev. Lett. 124, 105301 (2020)

- "Topological Origin of Non-Hermitian Skin Effects"

Nobuyuki Okuma, Kohei Kawabata, Ken Shiozaki, and Masatoshi Sato

Phys. Rev. Lett. 124, 086801 (2020)

- "Wannier representation of Floquet topological states"

Masaya Nakagawa, Robert-Jan Slager, Sho Higashikawa, and Takashi Oka

Phys. Rev. B 101, 075108 (2020)

- "Standard Quantum Limit and Heisenberg Limit in Function Estimation"

Naoto Kura and Masahito Ueda

Phys. Rev. Lett. 124, 010507 (2020)

- "Deep Gamblers: Learning to Abstain with Portfolio Theory"

Ziyin Liu, Zhikang Wang, Paul Pu Liang, Russ R. Salakhutdinov, Louis-Philippe Morency and Masahito Ueda

NeurIPS 2019, 10622--10632

- "Observation of Critical Phenomena in Parity-Time-Symmetric Quantum Dynamics"

Lei Xiao, Kunkun Wang, Xiang Zhan, Zhihao Bian, Kohei Kawabata, Masahito Ueda, Wei Yi, and Peng Xue

Phys. Rev. Lett. 123, 230401 (2019)

- "Anomalous Topological Active Matter"

Kazuki Sone and Yuto Ashida

Phys. Rev. Lett. 123, 205502 (2019)

- "Symmetry and Topology in Non-Hermitian Physics"

Kohei Kawabata, Ken Shiozaki, Masahito Ueda, and Masatoshi Sato

Phys. Rev. X 9, 041015 (2019)

See also Special Feature: Physics 14, 158 by Ching Hua Lee

- "Theory of Non-Hermitian Fermionic Superfluidity with a Complex-Valued Interaction"

Kazuki Yamamoto, Masaya Nakagawa, Kyosuke Adachi, Kazuaki Takasan, Masahito Ueda, and Norio Kawakami

Phys. Rev. Lett. 123, 123601 (2019)

- "Non-Hermitian Many-Body Localization"

Ryusuke Hamazaki, Kohei Kawabata, and Masahito Ueda

Phys. Rev. Lett. 123, 090603 (2019)

- "Classification of Exceptional Points and Non-Hermitian Topological Semimetals"

Kohei Kawabata, Takumi Bessho, and Masatoshi Sato

Phys. Rev. Lett. 123, 066405 (2019)

- "Floquet Chiral Magnetic Effect"

Sho Higashikawa, Masaya Nakagawa, and Masahito Ueda

Phys. Rev. Lett. 123, 066403 (2019)

- "Constructing neural stationary states for open quantum many-body systems"

Nobuyuki Yoshioka and Ryusuke Hamazaki

Phys. Rev. B 99, 214306 (2019) [selected as Editors' Suggestion]

See also Viewpoint: Physics 12, 74 by Maria Schuld, Ilya Sinayskiy, and Francesco Petruccione

- "Flemish Strings of Magnetic Solitons and a Nonthermal Fixed Point in a One-Dimensional Antiferromagnetic Spin-1 Bose Gas"

Kazuya Fujimoto, Ryusuke Hamazaki, and Masahito Ueda

Phys. Rev. Lett. 122, 173001 (2019)

- "Random-matrix behavior of quantum nonintegrable many-body systems with Dyson's three symmetries"

Ryusuke Hamazaki and Masahito Ueda

Phys. Rev. E 99, 042116 (2019)

- "Second-Order Topological Phases in Non-Hermitian Systems"

Tao Liu, Yu-Ran Zhang, Qing Ai, Zongping Gong, Kohei Kawabata, Masahito Ueda, and Franco Nori

Phys. Rev. Lett. 122, 076801 (2019)

- "Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics"

Kohei Kawabata, Sho Higashikawa, Zongping Gong, Yuto Ashida, and Masahito Ueda

Nat. Commun. 10, 297 (2019) [selected for Editors' Highlights (Link)]

- "Collective modes of vortex lattices in two-component Bose–Einstein condensates under synthetic gauge fields"

Takumi Yoshino, Shunsuke Furukawa, Sho Higashikawa, and Masahito Ueda

New J. Phys. 21, 015001 (2019)

- "Topological Entanglement-Spectrum Crossing in Quench Dynamics"

Zongping Gong and Masahito Ueda

Phys. Rev. Lett. 121, 250601 (2018)

- "Universal noise in continuous transport measurements of interacting fermions"

Shun Uchino, Masahito Ueda, and Jean-Philippe Brantut

Phys. Rev. A 98, 063619 (2018)

- "Few-body states of bosons interacting with a heavy quantum impurity"

Shuhei M. Yoshida, Zhe-Yu Shi, Jesper Levinsen, and Meera M. Parish

Phys. Rev. A 98, 062705 (2018)

- "Impurity-Induced Multibody Resonances in a Bose Gas"

Zhe-Yu Shi, Shuhei M. Yoshida, Meera M. Parish, and Jesper Levinsen

Phys. Rev. Lett. 121, 243401 (2018)

- "Non-Hermitian Kondo Effect in Ultracold Alkaline-Earth Atoms"

Masaya Nakagawa, Norio Kawakami, and Masahito Ueda

Phys. Rev. Lett. 121, 203001 (2018)

- "Anomalous helical edge states in a non-Hermitian Chern insulator"

Kohei Kawabata, Ken Shiozaki, and Masahito Ueda

Phys. Rev. B 98, 165148 (2018)

- "Thermalization and Heating Dynamics in Open Generic Many-Body Systems"

Yuto Ashida, Keiji Saito, and Masahito Ueda

Phys. Rev. Lett. 121, 170402 (2018)

- "Topological Phases of Non-Hermitian Systems"

Zongping Gong, Yuto Ashida, Kohei Kawabata, Kazuaki Takasan, Sho Higashikawa, and Masahito Ueda

Phys. Rev. X 8, 031079 (2018)

See also Viewpoint: Physics 11, 96 by Miguel A. Bandres and Mordechai Segev

See also Special Feature: Physics 14, 158 by Ching Hua Lee

- "Parity-time-symmetric topological superconductor"

Kohei Kawabata, Yuto Ashida, Hosho Katsura, and Masahito Ueda

Phys. Rev. B 98, 085116 (2018) [selected for Editors' Suggestion]

- "Bound on the exponential growth rate of out-of-time-ordered correlators"

Naoto Tsuji, Tomohiro Shitara, and Masahito Ueda

Phys. Rev. E 98, 012216 (2018)

- "Variational principle for quantum impurity systems in and out of equilibrium: Application to Kondo problems"

Yuto Ashida, Tao Shi, Mari Carmen Banuls, J. Ignacio Cirac, and Eugene Demler

Phys. Rev. B 98, 024103 (2018)

- "Solving Quantum Impurity Problems in and out of Equilibrium with the Variational Approach"

Yuto Ashida, Tao Shi, Mari Carmen Banuls, J. Ignacio Cirac, and Eugene Demler

Phys. Rev. Lett. 121, 026805 (2018)

- "Nonholonomy of order parameters and su(3) vortices in spin-1 Bose-Einstein condensates"

Emi Yukawa and Masahito Ueda

Phys. Rev. A 98, 013607 (2018)

- "Many-body spin Hall effect with space-inversion symmetry"

Nguyen Thanh Phuc and Masahito Ueda

Phys. Rev. A 97, 061608(R) (2018)

- "Thermalization and prethermalization in isolated quantum systems: a theoretical overview"

Takashi Mori, Tatsuhiko N. Ikeda, Eriko Kaminishi, and Masahito Ueda

J. Phys. B 51, 112001 (2018)

- "Full-Counting Many-Particle Dynamics: Nonlocal and Chiral Propagation of Correlations"

Yuto Ashida and Masahito Ueda

Phys. Rev. Lett. 120, 185301 (2018)

- "Information-to-work conversion by Maxwell's demon in a superconducting circuit quantum electrodynamical system"

Y. Masuyama, K. Funo, Y. Murashita, A. Noguchi, S. Kono, Y. Tabuchi, R. Yamazaki, M. Ueda, and Y. Nakamura

Nat. Commun. 9, 1291 (2018)

- "Quantum Szilard Engine with Attractively Interacting Bosons"

J. Bengtsson, M. Nilsson Tengstrand, A. Wacker, P. Samuelsson, M. Ueda, H. Linke, and S. M. Reimann

Phys. Rev. Lett. 120, 100601 (2018)

- "Atypicality of Most Few-Body Observables"

Ryusuke Hamazaki and Masahito Ueda

Phys. Rev. Lett. 120, 080603 (2018)

- "Exploring the Kondo model in and out of equilibrium with alkaline-earth atoms"

Marton Kanasz-Nagy, Yuto Ashida, Tao Shi, C. P. Moca, Tatsuhiko N. Ikeda, Simon Foelling, J. Ignacio Cirac, G. Zarand, and Eugene Demler

Phys. Rev. B 97, 155156 (2018)

- "Many-body interferometry of magnetic polaron dynamics"

Yuto Ashida, Richard Schmidt, Leticia Tarruell, and Eugene Demler

Phys. Rev. B 97, 060302(R) (2018)

See also Research highlight in Nature Physics.

- "Unconventional Universality Class of One-Dimensional Isolated Coarsening Dynamics in a Spinor Bose Gas"

Kazuya Fujimoto, Ryusuke Hamazaki, and Masahito Ueda

Phys. Rev. Lett. 120, 073002 (2018)

- "Universality of an Impurity in a Bose-Einstein Condensate"

Shuhei M. Yoshida, Shimpei Endo, Jesper Levinsen, and Meera M. Parish

Phys. Rev. X 8, 011024 (2018)

- "Discrete Time-Crystalline Order in Cavity and Circuit QED Systems"

Zongping Gong, Ryusuke Hamazaki, and Masahito Ueda

Phys. Rev. Lett. 120, 040404 (2018)

- "Entanglement prethermalization in the Tomonaga-Luttinger model"

Eriko Kaminishi, Takashi Mori, Tatsuhiko N. Ikeda, and Masahito Ueda

Phys. Rev. A 97, 013622 (2018)

- "Out-of-time-order fluctuation-dissipation theorem"

Naoto Tsuji, Tomohiro Shitara, and Masahito Ueda

Phys. Rev. E 97, 012101 (2018)

- "Finite-error metrological bounds on multiparameter Hamiltonian estimation"

Naoto Kura and Masahito Ueda

Phys. Rev. A 97, 012101 (2018)

- "Quantum Hall phase diagram of two-component Bose gases: Intercomponent entanglement and pseudopotentials"

Shunsuke Furukawa and Masahito Ueda

Phys. Rev. A 96, 053626 (2017)

- "Information Retrieval and Criticality in Parity-Time-Symmetric Systems"

Kohei Kawabata, Yuto Ashida, and Masahito Ueda

Phys. Rev. Lett. 119, 190401 (2017)

- "Fluctuation theorems in feedback-controlled open quantum systems: Quantum coherence and absolute irreversibility"

Yûto Murashita, Zongping Gong, Yuto Ashida, and Masahito Ueda

Phys. Rev. A 96, 043840 (2017)

- "Strongly spinor ferromagnetic Bose gases"

Kohaku H. Z. So and Masahito Ueda

Phys. Rev. A 96, 023628 (2017)

- "Parity-time-symmetric quantum critical phenomena"

Yuto Ashida, Shunsuke Furukawa, and Masahito Ueda

Nat. Commun. 8, 15791 (2017)

- "Zeno Hall Effect"

Zongping Gong, Sho Higashikawa, and Masahito Ueda

Phys. Rev. Lett. 118, 200401 (2017)

- "Exact zero modes in twisted Kitaev chains"

Kohei Kawabata, Ryohei Kobayashi, Ning Wu, and Hosho Katsura

Phys. Rev. B 95, 195140 (2017)

- "Influence of topological constraints and topological excitations: Decomposition formulas for calculating homotopy groups of symmetry-broken phases"

Sho Higashikawa and Masahito Ueda

Phys. Rev. B 95, 134520 (2017)

- "Anomalous Transport in the Superfluid Fluctuation Regime"

Shun Uchino and Masahito Ueda

Phys. Rev. Lett. 118, 105303 (2017)

- "Universal Work Fluctuations During Shortcuts to Adiabaticity by Counterdiabatic Driving"

Ken Funo, Jing-Ning Zhang, Cyril Chatou, Kihwan Kim, Masahito Ueda, and Adolfo del Campo

Phys. Rev. Lett. 118, 100602 (2017)

- "Multiparticle quantum dynamics under real-time observation"

Yuto Ashida and Masahito Ueda

Phys. Rev. A 95, 022124 (2017)

- "Entanglement prethermalization in an interaction quench between two harmonic oscillators"

Tatsuhiko N. Ikeda, Takashi Mori, Eriko Kaminishi, and Masahito Ueda

Phys. Rev. E 95, 022129 (2017)

- "Gibbs Paradox Revisited from the Fluctuation Theorem with Absolute Irreversibility"

Yûto Murashita and Masahito Ueda

Phys. Rev. Lett. 118, 060601 (2017)

- "Geometrically frustrated coarsening dynamics in spinor Bose-Fermi mixtures"

Nguyen Thanh Phuc, Tsutomu Momoi, Shunsuke Furukawa, Yuki Kawaguchi, Takeshi Fukuhara, and Masahito Ueda

Phys. Rev. A 95, 013620 (2017)

- "Exact out-of-time-ordered correlation functions for an interacting lattice fermion model"

Naoto Tsuji, Philipp Werner, and Masahito Ueda

Phys. Rev. A 95, 011601(R) (2017)

- "Work fluctuation and total entropy production in nonequilibrium processes"

Ken Funo, Tomohiro Shitara, and Masahito Ueda

Phys. Rev. E 94, 062112 (2016)

- "Emergent Electromagnetic Induction and Adiabatic Charge Pumping in Noncentrosymmetric Weyl Semimetals"

Hiroaki Ishizuka, Tomoya Hayata, Masahito Ueda, and Naoto Nagaosa

Phys. Rev. Lett. 117, 216601 (2016)

- "Determining the continuous family of quantum Fisher information from linear-response theory"

Tomohiro Shitara and Masahito Ueda

Phys. Rev. A 94, 062316 (2016)

- "Topological origin of universal few-body clusters in Efimov physics"

Yusuke Horinouchi and Masahito Ueda

Phys. Rev. A 94, 050702(R) (2016)

- "Quantum critical behavior influenced by measurement backaction in ultracold gases"

Yuto Ashida, Shunsuke Furukawa, and Masahito Ueda

Phys. Rev. A 94, 053615 (2016)

- "p-wave contact tensor: Universal properties of axisymmetry-broken p-wave Fermi gases"

Shuhei M. Yoshida and Masahito Ueda

Phys. Rev. A 94, 033611 (2016)

- "μ-symmetry breaking: An algebraic approach to finding mean fields of quantum many-body systems"

Sho Higashikawa and Masahito Ueda

Phys. Rev. A 94, 013613 (2016)

- "Quantum-trajectory thermodynamics with discrete feedback control"

Zongping Gong, Yuto Ashida, and Masahito Ueda

Phys. Rev. A 94, 012107 (2016)

- "Fermi gases: Anisotropic universality"

Masahito Ueda

Nature Physics 12, 530–531 (2016)

- "Trade-off relation between information and disturbance in quantum measurement"

Tomohiro Shitara, Yui Kuramochi and Masahito Ueda

Phys. Rev. A 93, 032134 (2016)

- "Generalized Gibbs ensemble in a nonintegrable system with an extensive number of local symmetries"

Ryusuke Hamazaki, Tatsuhiko N. Ikeda and Masahito Ueda

Phys. Rev. E 93, 032116 (2016)

- "Precise multi-emitter localization method for fast super-resolution imaging"

Yuto Ashida and Masahito Ueda

Optics Letters, 41, 72-75 (2016)

- "Work Fluctuation-Dissipation Trade-Off in Heat Engines"

Ken Funo and Masahito Ueda

Phys. Rev. Lett. 115, 260601 (2015) - "Entanglement pre-thermalization in a one-dimensional Bose gas"

Eriko Kaminishi, Takashi Mori, Tatsuhiko N. Ikeda and Masahito Ueda

Nature Physics, 11, 1050-1056 (2015) - "Excitation band topology and edge matter waves in Bose-Einstein condensates in optical lattices"

Shunsuke Furukawa and Masahito Ueda

New J. Phys. 17, 115014 (2015) - "Universal High-Momentum Asymptote and
Thermodynamic Relations in a Spinless Fermi Gas with a Resonant
`p`-Wave Interaction"

Shuhei M. Yoshida and Masahito Ueda

Phys. Rev. Lett. 115, 135303 (2015) - "Controlling and probing non-abelian emergent gauge potentials in spinor Bose-Fermi mixtures"

Nguyen Thanh Phuc, Gen Tatara, Yuki Kawaguchi and Masahito Ueda

Nature Communications 6, 8135 (2015) -
"Diffraction-Unlimited Position Measurement of Ultracold Atoms in an Optical Lattice"

Yuto Ashida and Masahito Ueda

Phys. Rev. Lett. 115, 095301 (2015)

See also Press Release from RIKEN. - "How accurately can the microcanonical ensemble
describe small isolated quantum systems?"

Tatsuhiko N. Ikeda and Masahito Ueda

Phys. Rev. E 92, 020102 (2015) - "Quantum nonequilibrium equalities with absolute irreversibility"

Ken Funo, Yûto Murashita and Masahito Ueda

New J. Phys. 17, 075005 (2015) - "Classicality condition on a system observable in a quantum measurement and a relative-entropy conservation law"

Yui Kuramochi and Masahito Ueda

Phys. Rev. A 91, 032110 (2015) - "The second law of thermodynamics under unitary evolution and external operations"

Tatsuhiko N. Ikeda, Naoyuki Sakumichi, Anatoli Polkovnikov, and Masahito Ueda

Annals of Physics**354**, 338-352 (2015). -
"Onset of a Limit Cycle and Universal Three-Body Parameter in Efimov Physics"

Yusuke Horinouchi and Masahito Ueda

Phys. Rev. Lett. 114, 025301 (2015)

- "Quantum Mass Acquisition in Spinor Bose-Einstein Condensates"

Nguyen Thanh Phuc, Yuki Kawaguchi, Masahito Ueda

Phys. Rev. Lett. 113, 230401 (2014) - "Topological aspects in spinor Bose-Einstein condensates" (Key Issues Review)

Masahito Ueda

Rep. Prog. Phys. vol. 77, 122401 (2014) - "General achievable bound of extractable work under feedback control"

Yuto Ashida, Ken Funo, Yûto Murashita and Masahito Ueda

Phys. Rev. E 90, 052125 (2014) - "Nonequilibrium equalities in absolutely irreversible processes"

Yûto Murashita, Ken Funo, and Masahito Ueda

Phys. Rev. E 90, 042110 (2014) - "Global phase diagram of two-component Bose gases in antiparallel magnetic fields"

Shunsuke Furukawa, Masahito Ueda

Phys. Rev. A 90, 033602 (2014) - "Microscopic Origin and Universality Classes of the Efimov Three-body Parameter"

Pascal Naidon, Shimpei Endo, Masahito Ueda

Phys. Rev. Lett. 112, 105301 (2014) - "Lee-Yang cluster expansion approach to the BCS-BEC crossover: BCS and BEC limits"

Naoyuki Sakumichi, Yusuke Nishida, and Masahito Ueda

Phys. Rev. A 89, 033622 (2014) - "Topological influence and backaction between topological excitations"

Shingo Kobayashi, Nicolas Tarantino, and Masahito Ueda

Phys. Rev. A 89, 033603 (2014)

- "Thermodynamic work gain from entanglement"

Ken Funo, Yu Watanabe, and Masahito Ueda

Phys. Rev. A 88, 052319 (2013) - "Integral quantum fluctuation theorems under measurement and feedback control"

Ken Funo, Yu Watanabe, and Masahito Ueda

Phys. Rev. E 88, 052121 (2013) - "Atomic spin-orbit coupling synthesized with magnetic-field-gradient pulses"

Zhifang Xu, Li You, and Masahito Ueda

Phys. Rev. A 87, 063634 (2013). - "Gauge-spin-space rotation invariant vortices in spin-orbit coupled Bose-Einstein condensates"

Zhifang Xu, Shingo Kobayashi, and Masahito Ueda

Phys. Rev. A 88, 013621 (2013) - "Fluctuation-induced and symmetry-prohibited metastabilities in spinor Bose-Einstein condensates"

Nguyen Thanh Phuc, Yuki Kawaguchi, and Masahito Ueda

Physical Review A**88**, 043629 (2013). - "Simultaneous continuous measurement of photon-counting and homodyne detection on a free photon field: dynamics of state reduction and the mutual influence of measurement backaction"

Yui Kuramochi, Yu Watanabe, and Masahito Ueda

J. Phys. A: Math. Theor.**46**, 425303 (2013). - "Integer Quantum Hall State in Two-Component Bose Gases in a Synthetic Magnetic Field"

Shunsuke Furukawa and Masahito Ueda

Physical Review Letters**111**, 090401 (2013). - "Spinor Bose gases: Symmetries, magnetism, and quantum dynamics"

Dan M. Stamper-Kurn and Masahito Ueda

Reviews of Modern Physics**85**, 1191-1244 (2013). - "Finite-size scaling analysis
of the eigenstate thermalization hypothesis
in a one-dimensional interacting Bose gas"

Tatsuhiko N. Ikeda, Yu Watanabe, and Masahito Ueda

Physical Review E**87**, 012125 (2013). - "Beliaev theory of spinor Bose-Einstein condensates"

Nguyen Thanh Phuc, Yuki Kawaguchi and Masahito Ueda

Annals of Physics**328**, 158-219 (2013).

- "Hydrodynamic description of spin-1 Bose-Einstein condensates"

Emi Yukawa and Masahito Ueda

Physical Review A**86**, 063614 (2012). - "Crossover trimers connecting continuous and discrete scaling regimes"

Shimpei Endo, Pascal Naidon, and Masahito Ueda

Physical Review A**86**, 062703 (2012). - "Symmetry classification of spin-orbit-coupled spinor Bose-Einstein condensates"

Z. F. Xu, Y. Kawaguchi, L. You, and M. Ueda

Physical Review A**86**, 033628 (2012). - "Fluctuation theorem with information exchange: Role of correlations in stochastic thermodynamics"

Takahiro Sagawa and Masahito Ueda

Phys. Rev. Lett.**109**, 180602 (2012). - "Quantum Hall states in rapidly rotating two-component Bose gases"

Shunsuke Furukawa and Masahito Ueda

Phys. Rev. A**86**, 031604(R) (2012). - "Spinor Bose-Einstein Condensates"

Yuki Kawaguchi and Masahito Ueda

Physics Reports**520**, 253-381 (2012). - "Topological classification of vortex-core structures of spin-1 Bose-Einstein condensates"

Shingo Kobayashi, Yuki Kawaguchi, Muneto Nitta, and Masahito Ueda

Physical Review A**86**, 023612 (2012). - "Criteria of off-diagonal long-range order in Bose and Fermi systems based on the Lee-Yang cluster expansion method"

Naoyuki Sakumichi, Norio Kawakami and Masahito Ueda

Physical Review A**85**, 043601 (2012). - "Nonequilibrium thermodynamics of feedback control"

Takahiro Sagawa and Masahito Ueda

Physical Review E**85**, 021104(1)-021104(16) (2012). - "Bose Gases with Nonzero Spin"

Masahito Ueda

Annu. Rev. Condens. Matter Phys.**3**, 263-283 (2012). - "Abe homotopy classification of topological excitations under the topological influence of vortices"

Shingo Kobayashi, Michikazu Kobayashi, Yuki Kawaguchi, Muneto Nitta, and Masahito Ueda

Nuclear Physics B**856**, 577 (2012).

- "Symmetry classification of spinor Bose-Einstein condensates"

Yuki Kawaguchi and Masahito Ueda

Physical Review A**84**, 053616 (2011). - "Effects of thermal and quantum fluctuations on the phase diagram of a spin-1 87Rb Bose-Einstein condensate"

Nguyen Thanh Phuc, Yuki Kawaguchi, and Masahito Ueda

Physical Review A**84**, 043645 (2011). - "Uncertainty relation revisited from quantum estimation theory"

Yu Watanabe, Takahiro Sagawa, and Masahito Ueda

Physical Review A**84**, 042121 (2011). - "Eigenstate randomization hypothesis: Why does long-time average equal the microcanonical average?"

Tatsuhiko N. Ikeda, Yu Watanabe, and Masahito Ueda

Physical Review E**84**, 021130 (2011). - "The Efimov effect in lithium 6"

Pascal Naidon and Masahito Ueda

Comptes Rendus Physique vol.**12**, 13-26 (2011). - "Measurement of an Efimov Trimer Binding Energy in a Three-Component Mixture of
^{6}Li"

Shuta Nakajima, Munekazu Horikoshi, Takashi Mukaiyama, Pascal Naidon, and Masahito Ueda

Phys. Rev. Lett.**106**, 143201 (2011). -
"Quantum Szilard Engine"

Sang Wook Kim, Takahiro Sagawa, Simone De Liberato, and Masahito Ueda

Phys. Rev. Lett.**106**, 070401 (2011).

See also view point commentary Physics 4, 13 (2011) by J. M. R. Parrondo and J. M. Horowitz.

- "Universal physics of 2+1 particles with non-zero angular momentum"

Shimpei Endo, Pascal Naidon, and Masahito Ueda

Few Body Systems,**51**, 207 (2011).

- "Quasi-Nambu-Goldstone Modes in Bose-Einstein Condensates"

Shun Uchino, Michikazu Kobayash, Muneto Nitta, and Masahito Ueda

Phys. Rev. Lett.**105**, 230406(1)-230406(2) (2010). - "Experimental demonstration of information-to-energy conversion and validation of the generalized Jarzynski equality"

Shoichi Toyabe, Takahiro Sagawa, Masahito Ueda, Eiro Muneyuki¡¢ Masaki Sano

Nature Physics**6**, 988-992 (2010). - "Spontaneous magnetic ordering in a ferromagnetic spinor dipolar Bose-Einstein condensate"

Y. Kawaguchi, H. Saito, K. Kudo, and M. Ueda

Phys. Rev. A.**82**, 43627-043643 (2010). - "Nonuniversal Efimov Atom-Dimer Resonances in a Three-Component Mixture of
^{6}Li"

Shuta Nakajima, Munekazu Horikoshi, Takashi Mukaiyama, Pascal Naidon, and Masahito Ueda

Phys. Rev. Lett.**105**, 023201 (2010). - "Bogoliubov theory and Lee-Huang-Yang corrections in spin-1 and spin-2 Bose-Einstein condensates in the presence of the quadratic Zeeman effect"

Shun Uchino, Michikazu Kobayashi, and Masahito Ueda

Phys. Rev. A.**81**, 063632 (2010). - "Sagawa and Ueda Reply"

Takahiro Sagawa and Masahito Ueda

Phys. Rev. Lett.**104**, 198904 (2010). - "Generalized Jarzynski Equality under Nonequilibrium Feedback Control"

Takahiro Sagawa and Masahito Ueda

Phys. Rev. Lett.**104**, 090602 (2010). - "Measurement of Universal Thermodynamic Functions for a Unitary Fermi Gas"

Munekazu Horikoshi, Shuta Nakajima, Masahito Ueda, and Takashi Mukaiyama

Science**327**, 442 (2010). - "Optimal Measurement on Noisy Quantum Systems"

Yu Watanabe, Takahiro Sagawa, and Masahito Ueda

Phys. Rev. Lett.**104**, 020401 (2010).

- "Independent Control of Scattering Lengths in Multicomponent Quantum Gases"

Peng Zhang, Pascal Naidon, and Masahito Ueda

Phys. Rev. Lett.**103**, 133202 (2009). - "Collision Dynamics and Rung Formation of non-Abelian Vortices"

Michikazu Kobayashi, Yuki Kawaguchi, Muneto Nitta, and Masahito Ueda

Phys. Rev. Lett.**103**, 115301 (2009). - "Possible Efimov Trimer State in a Three-Hyperfine-Component Lithium-6 Mixture"

Pascal Naidon and Masahito Ueda

Phys. Rev. Lett.**103**, 073203 (2009). -
"Minimal Energy Cost for Thermodynamic Information Processing: Measurement and Information Erasure"

Takahiro Sagawa and Masahito Ueda

Phys. Rev. Lett.**102**, 250602 (2009).

See also Synopsis. - "Ferrofluidity in a Two-Component Dipolar Bose-Einstein Condensate"

Hiroki Saito, Yuki Kawaguchi, and Masahito Ueda

Phys. Rev. Lett.**102**, 230403 (2009).

- "Critical temperature and condensate fraction of a fermion pair condensate"

Yasuhisa Inada, Munekazu Horikoshi, Shuta Nakajima, Makoto Kuwata-Gonokami, Masahito Ueda,¡¡and Takashi Mukaiyama

Phys. Rev. Lett.**101**, 180406 (2008). - "Collisional Properties of p-Wave Feshbach Molecules"

Yasuhisa Inada, Munekazu Horikoshi, Shuta Nakajima, Makoto Kuwata-Gonokami, Masahito Ueda, and Takashi Mukaiyama

Phys. Rev. Lett.**101**, 100401 (2008).

press coverage 1 2 -
"d-Wave Collapse and Explosion of a Dipolar Bose-Einstein Condensate"

T. Lahaye, J. Metz, B. Fröhlich, T. Koch, M. Meister, A. Griesmaier, T. Pfau, H. Saito, Y. Kawaguchi, and M. Ueda

Phys. Rev. Lett.**101**, 080401 (2008).

See also viewpoint commentary Physics 1, 13 (2008) by M. Lewenstein.

PRL cover / press coverage - "Dynamical symmetry in spinor Bose-Einstein condensates"

Shun Uchino, Takaharu Otsuka, and M. Ueda

Phys. Rev. A**78**, 023609 (2008). - "Heteronuclear fermionic superfluids with spin degrees of freedom"

D. B. M. Dickerscheid, Y. Kawaguchi, and M. Ueda

Phys. Rev. A**77**, 053605 (2008). - "Knots in a Spinor Bose-Einstein Condensate"

Y. Kawaguchi, M. Nitta, and M. Ueda

Phys. Rev. Lett.**100**, 180403 (2008).

PRL cover - "Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi Condensates"

M. Tezuka and M. Ueda

Phys. Rev. Lett.**100**, 110403 (2008). - "Second Law of Thermodynamics with Discrete Quantum Feedback Control"

T. Sagawa, and M. Ueda

Phys. Rev. Lett.**100**, 080403 (2008). - "Topological Winding and Unwinding in Metastable Bose-Einstein Condensates"

R. Kanamoto, Lincoln D. Carr, and M. Ueda

Phys. Rev. Lett.**100**, 060401 (2008). - "Accuracy matrix in a generalized simultaneous measurement of a qubit system"

T. Sagawa, and M. Ueda

Phys. Rev. A**77**, 012313 (2008).

- "Stabilization of a Bose-Einstein droplet by hyperfine Rabi oscillations"

H. Saito, Randall G. Hulet, and M. Ueda

Phys. Rev. A**76**, 053619 (2007). - "Kibble-Zurek mechanism in a quenched ferromagnetic Bose-Einstein condensate"

H. Saito, Y. Kawaguchi, and M. Ueda

Phys. Rev. A**76**, 043613 (2007). - "Upper bound on our knowledge about noncommuting observables for a qubit system"

Y. Kurotani, T. Sagawa, and M. Ueda

Phys. Rev. A**76**, 022325 (2007). - "Anomalous Josephson Effect between Even- and Odd-Frequency Superconductors"

Y. Tanaka, Alexander A. Golubov, S. Kashiwaya, and M. Ueda

Phys. Rev. Lett.**99**, 037005 (2007). - "Probabilistic reversing operation with fidelity and purity gain for macroscopic quantum superposition"

H. Terashima, and M. Ueda

Phys. Rev. A**75**, 052323 (2007). - "Can Spinor Dipolar Effects Be Observed in Bose-Einstein Condensates?"

Y. Kawaguchi, H. Saito, and M. Ueda

Phys. Rev. Lett.**98**, 110406 (2007). - "Circuit analysis of quantum measurement"

Y. Kurotani and M. Ueda

Phys. Rev. A**75**, 012110 (2007). - "Broken-axisymmetry phase of a spin-1 ferromagnetic Bose-Einstein Condensate"

K. Murata, H. Saito, and M. Ueda

Phys. Rev. A**75**, 013607 (2007). - "Topological defect formation in quenched ferromagnetic Bose-Einstein condensates"

H. Saito, Y. Kawaguchi, and M. Ueda

Phys. Rev. A**75**, 013621 (2007).

- "Breaking of Chiral Symmetry and Spontaneous Rotation in a Spinor Bose-Einstein Condensate"

H. Saito, Y. Kawaguchi, and M. Ueda

Phys. Rev. Lett.**96**, 065302 (2006). - "Einstein-de Haas Effect in Dipolar Bose-Einstein Condensates"

Y. Kawaguchi, H. Saito, and M. Ueda

Phys. Rev. Lett.**96**, 080405 (2006). - "Parametric Control of a Superconducting Flux Qubit"

S. Saito, T. Meno, M. Ueda, H. Tanaka, K. Semba, and H. Takayanagi

Phys. Rev. Lett.**96**, 107001 (2006). - "Vacuum Rabi oscillations in a macroscopic superconducting qubit LC oscillator system"

J. Johansson, S. Saito, T. Meno, H. Nakano, M. Ueda, K. Semba, and H. Takayanagi

Phys. Rev. Lett.**96**, 127006 (2006). - "Nambu-Goldstone Modes in a Rotating Bose-Einstein Condensate"

M. Ueda and T. Nakajima

Phys. Rev. A**73**, 043603 (2006). - "Critical fluctuations in a soliton formation of attractive Bose-Einstein condensates"

R. Kanamoto, H. Saito, and M. Ueda

Phys. Rev. A**73**, 033611 (2006). - "Stability analysis for n-component Bose-Einstein condensate"

D. C. Roberts and M. Ueda

Phys. Rev. A**73**, 053611 (2006). - "Quantum-statistical mechanics of an atom-dimer mixture: Lee-Yang cluster expansion approach"

T. Ohkuma and M. Ueda

Phys. Rev. A**73**, 063608 (2006). - "Reversible quantum measurement with arbitrary spins"

H. Terashima and M. Ueda

Phys. Rev. A**74**, 012102 (2006). - "Spontaneous Circulation in Ground-State Spinor Dipolar Bose-Einstein Condensates"

Y. Kawaguchi, H. Saito, and M. Ueda

Phys. Rev. Lett.**97**, 130404 (2006). - "Stabilization of a matter-wave droplet in free space by feedback control of interatomic interactions"

H. Saito and M. Ueda

Phys. Rev. A**74**, 023602 (2006).

- "Symmetry Breaking and Enhanced Condensate Fraction in a Matter-Wave Bright Soliton"

R. Kanamoto, H. Saito, and M. Ueda

Phys. Rev. Lett.**94**, 090404 (2005). - "Spin decoherence caused by spacetime curvature"

H. Terashima and M. Ueda

J. Phys. A: Math. Gen.**38**, 2029-2037 (2005). - "Spin textures in rotating two-component Bose-Einstein condensates"

K. Kasamatsu, M. Tsubota, and M. Ueda

Phys. Rev. A**71**, 043611 (2005). - "Vortices in Multicomponent Bose-Einstein Condensates"

K. Kasamatsu, M. Tsubota, and M. Ueda

Int. J. Mod. Phys. B.**19**, 1835-1904 (2005). - "Spontaneous magnetization and structure formation in a spin-1 ferromagnetic Bose-Einstein condensate"

H. Saito and M. Ueda

Phys. Rev. A**72**, 023610 (2005). - "Diagnostics for the ground-state phase of a spin-2 Bose-Einstein condensate"

H. Saito and M. Ueda

Phys. Rev. A**72**, 053628 (2005).