小澤研究室

2025

• Takuto Tsuno, Shintaro Taie, Yosuke Takasu, Kazuya Yamashita, Tomoki Ozawa, Yoshiro Takahashi
  Gain engineering and atom lasing in a topological edge state in synthetic dimensions
  Nature Communications; arXiv:2404.13769
• Yoshinori Hashimoto, Bruno Mera, Tomoki Ozawa
  Harmonic band theory: rigidity of non-zero degree harmonic maps from 2-torus to complex projective space
  arXiv:2512.17150
• Giedrius Žlabys, Wen-Bin He, Domantas Burba, Sarika Sasidharan Nair, Thomas Busch, Tomoki Ozawa
  Emergent topological properties in spatially modulated sub-wavelength barrier lattices
  arXiv:2512.16187
• Anton Montag, Tomoki Ozawa
  Quantum geometrical effects in non-Hermitian systems
  arXiv:2512.07264
• Yanyan He, Tomoki Ozawa
  Anomalous Wave-Packet Dynamics in One-Dimensional Non-Hermitian Lattices
  arXiv:2512.07484
• Bruno Mera, Tomoki Ozawa
  Relaxation to an Ideal Chern Band through Coupling to a Markovian Bath
  arXiv:2511.11394
• Guangyue Ji, David E. Palomino, Nathan Goldman, Tomoki Ozawa, Peter Riseborough, Jie Wang, Bruno Mera
  Density Matrix Geometry and Sum Rules
  arXiv:2507.14028
• Zhao Liu, Bruno Mera, Manato Fujimoto, Tomoki Ozawa, Jie Wang
  Theory of Generalized Landau Levels and Its Implications for Non-Abelian States
  Phys. Rev. X 15, 031019 (2025); arXiv:2405.14479
• Carolina Paiva, Jie Wang, Tomoki Ozawa, Bruno Mera
  Geometrical responses of generalized Landau levels: Structure factor and the quantized Hall viscosity
  Phys. Rev. B 112, 045106 (2025); arXiv:2501.11519
• 小澤知己
  トポロジカルフォトニクスとは何か
  レーザー研究 第53巻第5号 p218 (2025).
• William N Faugno, Hosho Katsura, Tomoki Ozawa
  Non-equilibirum physics of density-difference dependent Hamiltonian: Quantum Scarring from Emergent Chiral Symmetry
  arXiv:2503.05252
• Tomoki Ozawa
  Topological band structures in AMO physics
  Proceedings of the International School of Physics "Enrico Fermi" 209, 45-64 (2025)
  As a chapter for the Proceedings of the School on Quantum Fluids of Light and Matter edited by Alberto Bramati, Iacopo Carusotto, Cristiano Ciuti.
• Tomoki Ozawa and Henning Schomerus
  Geometric contribution to adiabatic amplification in non-Hermitian systems
  Phys. Rev. Research 7, 013173 (2025); arXiv:2409.13595
• Xin Shen, Guangyue Ji, Jinjie Zhang, David E. Palomino, Bruno Mera, Tomoki Ozawa, Jie Wang
  Exact Parent Hamiltonians for All Landau Level States in a Half-flux Lattice
  arXiv:2501.09742
• Tao Chen, Chenxi Huang, Ivan Velkovsky, Tomoki Ozawa, Hannah Price, Jacob P. Covey, Bryce Gadway
  Interaction-driven breakdown of Aharonov--Bohm caging in flat-band Rydberg lattices
  Nature Physics 21, 221-227 (2025); arXiv:2404.00737

2024

• Alexandre Chénier, Bosco d'Aligny, Félix Pellerin, Paul-Édouard Blanchard, Tomoki Ozawa, Iacopo Carusotto, Philippe St-Jean
  Quantized Hall drift in a frequency-encoded photonic Chern insulator
  arXiv:2412.04347
• 岩波書店編集部編
  『研究者、生活を語る──「両立」の舞台裏』
  著者の一人として記事を寄稿
• Nathan Goldman, Tomoki Ozawa
  Relating the Hall conductivity to the many-body Chern number using Fermi's Golden rule and Kramers-Kronig relations
  Comptes Rendus. Physique 25, 289-302 (2024); arXiv:2403.03340
  Featured article at Laboratoire Kastler Brossel
• Bruno Mera and Tomoki Ozawa
  Uniqueness of Landau levels and their analogs with higher Chern numbers
  Phys. Rev. Research 6, 033238 (2024); arXiv:2304.00866
• Ryo Takahashi, Tomoki Ozawa
  Bulk-entanglement spectrum correspondence in PT- and PC-symmetric topological insulators and superconductors
  Phys. Rev. Research 6, 033192 (2024); arXiv:2403.18372
• Greta Villa, Iacopo Carusotto, Tomoki Ozawa
  Mean-chiral displacement in coherently driven photonic lattices and its application to synthetic frequency dimensions
  Communications Physics 7 246 (2024); arXiv:2309.16101
  Behind the Paper blog post on the article in Springer Nature Research Communities
• Hiep X. Dinh, Armandas Balčytis, Tomoki Ozawa, Yasutomo Ota, Guanghui Ren, Toshihiko Baba, Satoshi Iwamoto, Arnan Mitchell, and Thach G. Nguyen
  Reconfigurable synthetic dimension frequency lattices in an integrated lithium niobate ring cavity
  Communications Physics 7, 185 (2024)
• Ivan Velkovsky, Anya Abraham, Enrico Martello, Jiarui Yu, Yaashnaa Singhal, Antonio Gonzalez, DaVonte Lewis, Hannah Price, Tomoki Ozawa, Bryce Gadway
  Observation of chiral solitary waves in a nonlinear Aharonov-Bohm ring
  arXiv:2406.01732
• Min Yu, Xiangbei Li, Yaoming Chu, Bruno Mera, F. Nur Ünal, Pengcheng Yang, Yu Liu, Nathan Goldman, Jianming Cai
  Experimental demonstration of topological bounds in quantum metrology
  National Science Review 11, nwae065 (2024); arXiv:2206.00546
• Tomoki Ozawa, Tomoya Hayata
  Two-dimensional lattice with an imaginary magnetic field
  Phys. Rev. B 109, 085113 (2024); arXiv:2307.14635
• Yutaro Tanaka, Ryo Takahashi, Ryo Okugawa
  Non-Hermitian skin effect enforced by nonsymmorphic symmetries
  Phys. Rev. B 109, 035131 (2024); arXiv:2306.08923
• W. N. Faugno, Mario Salerno, Tomoki Ozawa
  Density Dependent Gauge Field Inducing Emergent Su-Schrieffer-Heeger Physics, Solitons, and Condensates in a Discrete Nonlinear Schrödinger Equation
  Phys. Rev. Lett. 132, 023401 (2024); arXiv:2307.02952

2023

• Yosuke Nakata, Toshihiro Nakanishi, Ryo Takahashi, Fumiaki Miyamaru, Shuichi Murakami
  Hidden symmetry protection for surface plasmon polaritons
  Phys. Rev. Research 5, L042027 (2023)
• Yosuke Nakata, Toshihiro Nakanishi, Ryo Takahashi, Fumiaki Miyamaru, Shuichi Murakami
  Bulk-edge correspondences for surface plasmon polaritons: A circuit approach
  Phys. Rev. B 108, 174105 (2023)
• W. N. Faugno, Tomoki Ozawa
  Geometric Characterization of Many Body Localization
  arXiv:2311.12280
• Grazia Salerno, Tomoki Ozawa, Päivi Törmä
  Drude weight and the many-body quantum metric in one-dimensional Bose systems
  Phys. Rev. B 108, L140503 (2023); arXiv:2307.10012
• Yaashnaa Singhal, Enrico Martello, Shraddha Agrawal, Tomoki Ozawa, Hannah Price, and Bryce Gadway
  Measuring the adiabatic non-Hermitian Berry phase in feedback-coupled oscillators
  Phys. Rev. Research 5, L032026 (2023); arXiv:2205.02700
• Ryo Takahashi and Tomoki Ozawa
  Bulk-edge correspondence of Stiefel-Whitney and Euler insulators through the entanglement spectrum and cutting procedure
  Phys. Rev. B 108, 075129 (2023); arXiv:2304.06974
• Gabriel Cáceres-Aravena, Bastián Real, Diego Guzmán-Silva, Paloma Vildoso, Ignacio Salinas, Alberto Amo, Tomoki Ozawa, Rodrigo A. Vicencio
  Edge-to-edge topological spectral transfer in diamond photonic lattices
  APL Photonics 8, 080801 (2023); arXiv:2301.04189
• Ritika Anandwade, Yaashnaa Singhal, Sai Naga Manoj Paladugu, Enrico Martello, Michael Castle, Shraddha Agrawal, Ellen Carlson, Cait Battle-McDonald, Tomoki Ozawa, Hannah M. Price, and Bryce Gadway
  Synthetic mechanical lattices with synthetic interactions
  Phys. Rev. A 108, 012221 (2023); arXiv:2107.09649
• Enrico Martello, Yaashnaa Singhal, Bryce Gadway, Tomoki Ozawa, Hannah M. Price
  Coexistence of stable and unstable population dynamics in a nonlinear non-Hermitian mechanical dimer
  Phys. Rev. E 107, 064211 (2023); arXiv:2302.03572
• 小澤知己
  人工量子系の物性物理とトポロジカル物性
  第67回物性若手夏の学校 集中ゼミ講義ノート
• Gabriel Matos, Bruno Mera, José M. Mourão, Paulo D. Mourão, & João P. Nunes
  Laughlin States Change Under Large Geometry Deformations and Imaginary Time Hamiltonian Dynamics
  Commun. Math. Phys. 399, 2045-2070 (2023); arXiv:2107.11360

2022

• Bruno Mera and Tomoki Ozawa
  Singular-connection approach to topological phases and resonant optical responses
  Phys. Rev. B 106, 245134 (2022); arXiv:2210.06844
• Bruno Mera, Johannes Mitscherling
  Nontrivial quantum geometry of degenerate flat bands
  Phys. Rev. B 106, 165133 (2022); arXiv:2205.07900
• W. N. Faugno and Tomoki Ozawa
  Interaction-Induced Non-Hermitian Topological Phases from a Dynamical Gauge Field
  Phys. Rev. Lett. 129, 180401 (2022); arXiv:2210.01572
• Bruno Mera, Nikola Paunković, Syed Tahir Amin, and Vítor R. Vieira
  Information geometry of quantum critical submanifolds: Relevant, marginal, and irrelevant operators
  Phys. Rev. B 106, 155101 (2022); arXiv:2201.01329
• Makio Kawasaki, Ken Mochizuki, Hideaki Obuse
  Topological phases protected by shifted sublattice symmetry in dissipative quantum systems
  Phys. Rev. B 106, 035408 (2022); arXiv:2201.09283
• Bruno Mera, Paulo Mateus, Alexandra M. Carvalho
  Model complexity in statistical manifolds: the role of curvature
  IEEE Transactions on Information Theory 68, 5619 (2022); arXiv:2007.02904
• Ken Mochizuki and Tomoki Ozawa
  Band structures under non-Hermitian periodic potentials: Connecting nearly-free and bi-orthogonal tight-binding models
  Phys. Rev. B 105, 174108 (2022); arXiv:2203.00247
• Min Yu, Yu Liu, Pengcheng Yang, Musang Gong, Qingyun Cao, Shaoliang Zhang, Haibin Liu, Markus Heyl, Tomoki Ozawa, Nathan Goldman, Jianming Cai
  Quantum Fisher information measurement and verification of the quantum Cramér–Rao bound in a solid-state qubit
  npj Quantum Information 8, 56 (2022); arXiv:2003.08373
• Takumi Bessho, Ken Mochizuki, Hideaki Obuse, Masatoshi Sato
  Extrinsic topology of Floquet anomalous boundary states in quantum walks
  Phys. Rev. B 105, 094306 (2022); arXiv:2112.03167
• Armandas Balčytis, Tomoki Ozawa, Yasutomo Ota, Satoshi Iwamoto, Jun Maeda, Toshihiko Baba
  Synthetic dimension band structures on a Si CMOS photonic platform
  Science Advances 8, eabk0468 (2022); arXiv:2105.13742
• Hannah Price, Yidong Chong, Alexander Khanikaev, Henning Schomerus, Lukas J. Maczewsky, Mark Kremer, Matthias Heinrich, Alexander Szameit, Oded Zilberberg, Yihao Yang, Baile Zhang, Andrea Alù, Ronny Thomale, Iacopo Carusotto, Philippe St-Jean, Alberto Amo, Avik Dutt, Luqi Yuan, Shanhui Fan, Xuefan Yin, Chao Peng, Tomoki Ozawa, Andrea Blanco-Redondo
  Roadmap on Topological Photonics
  J. Phys. Photonics 4 032501 (2022); arXiv:2201.06315

2021

• Ken Mochizuki, Kaoru Mizuta, Norio Kawakami
  Fate of topological edge states in disordered periodically driven nonlinear systems
  Phys. Rev. Research 3, 043112 (2021); arXiv:2108.00649
  Selected as Editor's Suggestion
• Bruno Mera and Tomoki Ozawa
  Engineering geometrically flat Chern bands with Fubini-Study Kähler structure
  Phys. Rev. B 104, 115160 (2021); arXiv:2107.09039
• Bruno Mera and Tomoki Ozawa
  Kähler geometry and Chern insulators: Relations between topology and the quantum metric
  Phys. Rev. B 104, 045104 (2021); arXiv:2103.11583
• Tomoki Ozawa and Bruno Mera
  Relations between topology and the quantum metric for Chern insulators
  Phys. Rev. B 104, 045103 (2021); arXiv:2103.11582
• Tomoki Ozawa, Ramy El-Ganainy, and Alberto Amo
  Photonic Topological Materials: feature introduction
  Optical Materials Express 11, 1592-1593 (2021)
  This is an introduction article to the feature issue of Optical Materials Expresss on Photonic Topological Materials
• Matteo Seclì, Tomoki Ozawa, Massimo Capone, Iacopo Carusotto
  Spatial and spectral mode-selection effects in topological lasers with frequency-dependent gain
  APL Photonics 6, 050803 (2021); arXiv:2012.10709
• Tomoki Ozawa
  Artificial magnetic field for synthetic quantum matter without dynamical modulation
  Phys. Rev. A 103, 033318 (2021); arXiv:2008.02412

2020

• Lisa Yamauchi, Tomoya Hayata, Masahito Uwamichi, Tomoki Ozawa, Kyogo Kawaguchi
  Chirality-driven edge flow and non-Hermitian topology in active nematic cells
  arXiv:2008.10852
• B. Real, O. Jamadi, M. Milićević, N. Pernet, P. St-Jean, T. Ozawa, G. Montambaux, I. Sagnes, A. Lemaître, L. Le Gratiet, A. Harouri, S. Ravets, J. Bloch, and A. Amo
  Semi-Dirac Transport and Anisotropic Localization in Polariton Honeycomb Lattices
  Phys. Rev. Lett. 125, 186601 (2020); arXiv:2004.03478
• Hannah M. Price, Tomoki Ozawa, Henning Schomerus
  Synthetic dimensions and topological chiral currents in mesoscopic rings
  Phys. Rev. Research 2, 032017(R) (2020); arXiv:1907.04231

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