大関 真之 Masayuki Ohzeki

博士(理学)(2008年取得)

情報統計力学、量子アニーリング、量子機械学習を中心に、基礎理論と社会への応用をつなぐ研究を行っています。

所属

  • 東北大学大学院情報科学研究科 情報基礎科学専攻 教授
  • 東京科学大学 理学院 物理学系 教授
  • 株式会社シグマアイ 代表取締役

研究・活動の広がり

掲載した成果には、統計物理・確率過程、量子アニーリング、機械学習・データ解析、量子計算・量子情報に関する研究が含まれます。

研究成果とあわせて、教育活動の記録も紹介しています。

論文

大関研究室での活動による業績

No. Title Author Bibliography DOI
142 Griffiths Inequalities and Gibbs–Bogoliubov Inequality for General Gauge Glasses with Gaussian Disorder on Nishimori Line Manaka Okuyama, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (10) 104706 (2026) 10.7566/JPSJ.95.104706
141 Performance Evaluation of Ising and QUBO Variable Encodings in Boltzmann Machine Learning Yasushi Hasegawa, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (10) 104006 (2026) 10.7566/JPSJ.95.104006
140 Maxwell’s Demon in Markov Chain Monte Carlo: Cooling Information Flow and Entropy Balance Masayuki Ohzeki Journal of the Physical Society of Japan 95 (10) 103001 (2026) 10.7566/JPSJ.95.103001
139 Analysis of Critical Points in a Permutation Model on Hierarchical Lattices by Real-Space Renormalization Group Ryuki Ito, Taisei Matsuo, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (9) 094003 (2026) 10.7566/JPSJ.95.094003
138 Finite-Basis Duality Estimate for the Surface-Code Threshold under Correlated Bit-Flip Errors Masayuki Ohzeki Journal of the Physical Society of Japan 95 (9) 095002 (2026) 10.7566/JPSJ.95.095002
137 Attention-Like Hebbian Learning from Quantum Probability Flow and Quantum-Annealer Tests Masayuki Ohzeki Journal of the Physical Society of Japan 95 (9) 093001 (2026) 10.7566/JPSJ.95.093001
136 Non-Equilibrium Model Selection via Finite-Time Thermodynamics Masayuki Ohzeki Journal of the Physical Society of Japan 95 (8) 083002 (2026) 10.7566/JPSJ.95.083002
135 Kernel Learning by Quantum Annealer Yasushi Hasegawa, Hiroki Oshiyama, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (7) 074002 (2026) 10.7566/JPSJ.95.074002
134 Demonstration of a compatibility-based childcare support service using quantum annealing Yuuma Matsumoto, Taisei Takabayashi, Rima Sato, Rumiko Honda, Masayuki Ohzeki Scientific Reports (2026) 10.1038/s41598-026-60894-z
133 Audio Source Separation via Nonnegative Binary Matrix Factorization Using D-Wave Quantum Annealer Takuto Sasajima, Ami S. Koshikawa, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (6) 064006 (2026) 10.7566/JPSJ.95.064006
132 Population Annealing as a Discrete-Time Schrödinger Bridge Masayuki Ohzeki Journal of the Physical Society of Japan 95 (6) 063001 (2026) 10.7566/JPSJ.95.063001
131 Quantum-Classical Hybrid Algorithm Using Quantum Annealing for Multi-Objective Job Shop Scheduling Kenta Sawamura, Kensuke Araki, Naoki Maruyama, Renichiro Haba, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (5) 054002 (2026) 10.7566/jpsj.95.054002
130 Uniformity Bias in Ground-State Sampling Induced by Replica Alignment in Quantum Monte Carlo for Quantum Annealing Naoki Maruyama, Masayuki Ohzeki, Kazuyuki Tanaka Journal of the Physical Society of Japan 95 (3) 034001 (2026) 10.7566/jpsj.95.034001
129 Fourier Analysis of Parameterized Quantum Circuits and the Barren Plateau Problem Shun Okumura, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (3) 033002 (2026) 10.7566/jpsj.95.033002
128 Accelerating Extended Benders Decomposition with Quantum-Classical Hybrid Solver Takuma Yoshihara, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (3) 033001 (2026) 10.7566/jpsj.95.033001
127 Quantum Generative Model on Bicycle-sharing System and an Application Fumio Nemoto, Nobuyuki Koike, Daichi Sato, Yuuta Kawaai, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (2) 024003 (2026) 10.7566/jpsj.95.024003
126 Statistical Mechanics Calculations Using Variational Autoregressive Networks and Quantum Annealing Yuta Tamura, Masayuki Ohzeki Journal of the Physical Society of Japan 95 (2) 024001 (2026) 10.7566/jpsj.95.024001
125 Graph Minor Embedding Can Affect Sampling Degenerate Ground States Using Quantum Annealing Naoki Maruyama, Masayuki Ohzeki, Kazuyuki Tanaka Journal of the Physical Society of Japan 95 (1) 013002 (2026) 10.7566/JPSJ.95.013002
124 Analytical singular-value structure of analytic-continuation kernels from Slepian information theory Masayuki Ohzeki APS Open Science (2026) 10.1103/8yw5-dhd4
123 Nonreversible gauge fields in Fokker-Planck dynamics: Supersymmetric Hamiltonians and learned finite forces Masayuki Ohzeki Physical Review Research (2026) 10.1103/tg4c-7cnr
122 Existence of a phase transition in the one-dimensional Ising spin glass model with long-range interactions on the Nishimori line Manaka Okuyama, Masayuki Ohzeki Journal of Physics A: Mathematical and Theoretical 59 (30) 305204 (2026) 10.1088/1751-8121/ae8c95
121 Daydreaming algorithm for biased patterns Mikiya Doi, Masayuki Ohzeki, Federico Ricci-Tersenghi Journal of Statistical Mechanics: Theory and Experiment (2026) 10.1088/1742-5468/ae8249
120 Quantum annealing-based route optimization for commercial AGV operating systems in large-scale logistics warehouses Thinh Nguyen Quang, Kosuke Matsuyama, Keisuke Shimizu, Hiroki Sugano, Eiji Kurimoto, Masahiro Miki, Jumpei Suzuki, Ziyi Chen, Hasitha Muthumala Waidyasooriya, Masanori Hariyama, Masaru Hitomi, Kenta Sawamura, Masayuki Ohzeki Scientific Reports 15 (1) 44047 (2025) 10.1038/s41598-025-28481-w
119 Relaxation-assisted reverse annealing on nonnegative/binary matrix factorization Renichiro Haba, Masayuki Ohzeki, Kazuyuki Tanaka PLOS One 20 (7) e0323232 (2025) 10.1371/journal.pone.0323232
118 Quantum Discriminative Restricted Boltzmann Machine Kouki Yonaga, Masayuki Ohzeki Journal of the Physical Society of Japan 94 (5) 053002 (2025) 10.7566/JPSJ.94.053002
117 Subgradient Method Using Quantum Annealing for Inequality-Constrained Binary Optimization Problems Taisei Takabayashi, Takeru Goto, Masayuki Ohzeki Journal of the Physical Society of Japan 94 (5) 054003 (2025) 10.7566/JPSJ.94.054003
116 Free energy equivalence between mean-field models and nonsparsely diluted mean-field models Manaka Okuyama, Masayuki Ohzeki Journal of Physics A: Mathematical and Theoretical 58 (4) 045004 (2025) 10.1088/1751-8121/adaab4
115 Existence of Long-Range Order in Random-Field Ising Model on Dyson Hierarchical Lattice Manaka Okuyama, Masayuki Ohzeki Journal of Statistical Physics 192 (2) 16 (2025) 10.1007/s10955-025-03399-9
114 Large-Scale AGV Routing Based on Multi-FPGA SQA Acceleration. Thinh NguyenQuang, Kosuke Matsuyama, Keisuke Shimizu, Hiroki Sugano, Eiji Kurimoto, Hasitha Muthumala Waidyasooriya, Masanori Hariyama, Masayuki Ohzeki ASP-DAC 2025 1188-1194 (2025) 10.1145/3658617.3697700
113 Typical reconstruction limit and phase transition of maximum entropy method Masaru Hitomi, Masayuki Ohzeki Physical Review Research 7 (4) 043091 (2025) 10.1103/bg58-lpt2
112 Temperature chaos as a logical consequence of the reentrant transition in spin glasses Hidetoshi Nishimori, Masayuki Ohzeki, Manaka Okuyama Physical Review E 112 (4) (2025) 10.1103/qp1w-qcbs
111 Schrödinger bridge-type diffusion models as an extension of variational autoencoders Kentaro Kaba, Reo Shimizu, Masayuki Ohzeki, Yuki Sughiyama Physical Review Research 7 (3) (2025) 10.1103/dxp7-4hby
110 Efficient Construction of Feasible Solutions in Column Generation Using Quantum Annealing Taisei Takabayashi, Naoki Maruyama, Takuma Yoshihara, Renichiro Haba, Masayuki Ohzeki Journal of the Physical Society of Japan 94 (9) 094005 (2025) 10.7566/jpsj.94.094005
109 Reformulation of One-Hot Constraints in Combinational Optimization Naoya Katayama, Masayuki Ohzeki Journal of the Physical Society of Japan 94 (10) 104003 (2025) 10.7566/jpsj.94.104003
108 Optimization of connection patterns between mobile phones and base stations using quantum annealing Taisei Takabayashi, Shoichi Sudo, Toshihiro Aoki, Shun Seo, Masayuki Ohzeki Scientific Reports 15 (1) 24540 (2025) 10.1038/s41598-025-09230-5
107 Sparse Modeling for Inelastic Neutron Scattering Kouki Yonaga, Shohei Hayashida, Masayuki Ohzeki, Takatsugu Masuda Journal of the Physical Society of Japan 94 (7) 074002 (2025) 10.7566/JPSJ.94.074002
106 Quadratic Unconstrained Binary Formulation for Traffic Signal Optimization on Real-World Maps Reo Shikanai, Masayuki Ohzeki, Kazuyuki Tanaka Journal of the Physical Society of Japan 94 (2) 024001 (2025) 10.7566/JPSJ.94.024001
105 Solution Space and Storage Capacity of Fully Connected Two-Layer Neural Networks with Generic Activation Functions Sota Nishiyama, Masayuki Ohzeki Journal of the Physical Society of Japan 94 (1) 014802 (2025) 10.7566/JPSJ.94.014802
104 Online Calibration Scheme for Training Restricted Boltzmann Machines with Quantum Annealing Takeru Goto, Masayuki Ohzeki Journal of the Physical Society of Japan 94 (3) 034002 (2025) 10.7566/JPSJ.94.034002
103 Replica bound for Ising spin glass models in one dimension Manaka Okuyama, Masayuki Ohzeki Journal of Physics A: Mathematical and Theoretical 58 (1) 015003 (2024) 10.1088/1751-8121/ad97fb
102 Toward Mean-Field Bound for Critical Temperature on Nishimori Line Manaka Okuyama, Masayuki Ohzeki Journal of the Physical Society of Japan 93 (10) 104706 (2024) 10.7566/jpsj.93.104706
101 Reconsideration of Optimization for Reduction of Traffic Congestion Masayuki Ohzeki Journal of the Physical Society of Japan 93 (11) 115003 (2024) 10.7566/JPSJ.93.115003
100 Phase Transition in Binary Compressed Sensing Based on L1-norm Minimization Mikiya Doi, Masayuki Ohzeki Journal of the Physical Society of Japan 93 (8) 084003 (2024) 10.7566/JPSJ.93.084003
99 Hybrid Algorithm of Linear Programming Relaxation and Quantum Annealing Taisei Takabayashi, Masayuki Ohzeki Journal of the Physical Society of Japan 93 (3) 034001 (2024) 10.7566/JPSJ.93.034001
98 Duality Analysis in a Symmetric Group and its Application to Random Tensor Network Models Masayuki Ohzeki Progress of Theoretical and Experimental Physics 2024 (12) 121A01 (2024) 10.1093/ptep/ptae171
97 Mean-field theory is exact for Ising spin glass models with Kac potential in non-additive limit on Nishimori line Manaka Okuyama, Masayuki Ohzeki Journal of Physics A: Mathematical and Theoretical 56 (32) 325003 (2023) 10.1088/1751-8121/ace6e4

arXiv:2301.13051

96 Individual subject evaluated difficulty of adjustable mazes generated using quantum annealing Yuto Ishikawa, Takuma Yoshihara, Keita Okamura, Masayuki Ohzeki Frontiers in Computer Science 5 (2023) 10.3389/fcomp.2023.1285962
95 Random Postprocessing for Combinatorial Bayesian Optimization Keisuke Morita, Yoshihiko Nishikawa, Masayuki Ohzeki Journal of the Physical Society of Japan 92 (12) 123801 (2023) 10.7566/JPSJ.92.123801
94 Efficient Algorithm for Binary Quadratic Problem by Column Generation and Quantum Annealing Sota Hirama, Masayuki Ohzeki Journal of the Physical Society of Japan 92 (11) 113002 (2023) 10.7566/JPSJ.92.113002
93 Exact Solution of Free Entropy for Matrix-Valued Geometric Brownian Motion with Non-Commutative Matrices via Replica Method Manaka Okuyama, Masayuki Ohzeki Journal of the Physical Society of Japan 92 (11) 114001 (2023) 10.7566/JPSJ.92.114001

arXiv:2006.00201

92 Exploration of new chemical materials using black-box optimization with the D-wave quantum annealer Mikiya Doi, Yoshihiro Nakao, Takuro Tanaka, Masami Sako, Masayuki Ohzeki Frontiers in Computer Science 5 (2023) 10.3389/fcomp.2023.1286226
91 Magnetic order in nanoscale gyroid networks Ami S. Koshikawa, Justin Llandro, Masayuki Ohzeki, Shunsuke Fukami, Hideo Ohno, Na\"emi Leo Physical Review B 108 024414 (2023) 10.1103/PhysRevB.108.024414
90 Gibbs–Bogoliubov Inequality on the Nishimori Line Manaka Okuyama, Masayuki Ohzeki Journal of the Physical Society of Japan 92 (8) 084002 (2023) 10.7566/JPSJ.92.084002

arXiv:2208.12311

89 Spatio-temporal reconstruction of substance dynamics using compressed sensing in multi-spectral magnetic resonance spectroscopic imaging Utako Yamamoto, Hirohiko Imai, Kei Sano, Masayuki Ohzeki, Tetsuya Matsuda, Toshiyuki Tanaka Expert Systems with Applications 232 120744 (2023)
88 Virtual Screening of Chemical Space Based on Quantum Annealing Takuro Tanaka, Masami Sako, Mahito Chiba, Chul Lee, Hyukgeun Cha, Masayuki Ohzeki Journal of the Physical Society of Japan 92 (2) 023001 (2023) 10.7566/JPSJ.92.023001
87 Threshold theorem in isolated quantum dynamics with stochastic control errors Manaka Okuyama, Kentaro Ohki, Masayuki Ohzeki Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 381 (2241) 20210412 (2022) 10.1098/rsta.2021.0412

arXiv:2009.11151

86 Travel time optimization on multi-AGV routing by reverse annealing Renichiro Haba, Masayuki Ohzeki, Kazuyuki Tanaka Scientific Reports 12 (1) (2022) 10.1038/s41598-022-22704-0
85 Comparing the Effects of Boltzmann Machines as Associative Memory in Generative Adversarial Networks between Classical and Quantum Samplings Mitsuru Urushibata, Masayuki Ohzeki, Kazuyuki Tanaka Journal of the Physical Society of Japan 91 (7) 074008 (2022) 10.7566/JPSJ.91.074008
84 A Scalable Emulator for Quantum Fourier Transform Using Multiple-FPGAs With High-Bandwidth-Memory Hasitha Muthumala Waidyasooriya, Hiroki Oshiyama, Yuya Kurebayashi, Masanori Hariyama, Masayuki Ohzeki IEEE Access 10 65103-65117 (2022) 10.1109/ACCESS.2022.3183993
83 Assessment of image generation by quantum annealer Takehito Sato, Masayuki Ohzeki, Kazuyuki Tanaka Scientific Reports 11 (1) (2021) 10.1038/s41598-021-92295-9
82 Mirror-symmetry-protected dynamical quantum phase transitions in topological crystalline insulators Ryo Okugawa, Hiroki Oshiyama, Masayuki Ohzeki Physical Review Research 3 (4) 043064 (2021) 10.1103/PhysRevResearch.3.043064
81 Mean field analysis of reverse annealing for code-division multiple-access multiuser detection Shunta Arai, Masayuki Ohzeki, Kazuyuki Tanaka Physical Review Research 3 (3) 033006 (2021) 10.1103/PhysRevResearch.3.033006
80 Teacher-Student Learning for a Binary Perceptron with Quantum Fluctuations Shunta Arai, Masayuki Ohzeki, Kazuyuki Tanaka Journal of the Physical Society of Japan 90 (7) 074002 (2021) 10.7566/JPSJ.90.074002
79 Kernel-based framework to estimate deformations of pneumothorax lung using relative position of anatomical landmarks Utako Yamamoto, Megumi Nakao, Masayuki Ohzeki, Junko Tokuno, Toyofumi Fengshi Chen-Yoshikawa, Tetsuya Matsuda Expert Systems with Applications 183 115288 (2021)
78 Benchmark Test of Black-box Optimization Using D-Wave Quantum Annealer Ami S. Koshikawa, Masayuki Ohzeki, Tadashi Kadowaki, Kazuyuki Tanaka Journal of the Physical Society of Japan 90 (6) 064001 (2021) 10.7566/JPSJ.90.064001
77 Quantum annealing for ICT system design automation Takayuki Kuroda, Takuya Kuwahara, Kouki Yonaga, Takao Osaki, Masamichi J. Miyama, Masayuki Ohzeki 2021 IEEE/ACM 21st International Symposium on Cluster, Cloud and Internet Computing (CCGrid) 156-165 (2021) 10.1109/CCGrid51090.2021.00025

主な研究成果

論文から主な成果を紹介します。掲載年:2013〜2026年。

研究室での成果

大関研究室での活動による業績

  1. 雑誌論文

    Filtering out mislabeled training instances using black-box optimization and quantum annealing

    Makoto Otsuka, Kento Kodama, Keisuke Morita, Masayuki Ohzeki

    Scientific Reports 15 37892 2025-10-29

  2. 雑誌論文

    Prediction-based sign placement using QA sampling

    Hiroto Abe, Tatsuhiro Araki, Takahiro Karino, Masayuki Ohzeki

    Scientific Reports 2026-08-23

その他の主な成果

研究室での活動に限定せず、これまでの主な成果を紹介します。

  1. 雑誌論文

    Comment on ‘Energy-time uncertainty relation for driven quantum systems’

    Manaka Okuyama, Masayuki Ohzeki

    Journal of Physics A: Mathematical and Theoretical 51 (31) 318001

    arXiv:1802.00995

  2. 雑誌論文

    Variational Principle in Langevin Processes

    Yuki SUGHIYAMA, Masayuki OHZEKI

    Interdisciplinary Information Sciences 19 (1) 93-99 2013

プレプリント

  1. A useful fundamental speed limit for the imaginary-time Schrodinger equation

    Manaka Okuyama, Masayuki Ohzeki

    arXiv:1806.09040 ·

  2. An exact solution of the partition function for mean-field quantum spin systems without the static approximation

    Manaka Okuyama, Masayuki Ohzeki

    arXiv:1808.09707 ·

  3. Some inequalities for correlation functions of Ising models with quenched randomness

    Manaka Okuyama, Masayuki Ohzeki

    arXiv:2004.05832 ·

  4. Upper bound on the second derivative of the quenched pressure in spin-glass models: weak Griffiths second inequality

    Manaka Okuyama, Masayuki Ohzeki

    arXiv:2005.06757 ·

  5. Threshold theorem in quantum annealing with deterministic analog control errors

    Manaka Okuyama, Masayuki Ohzeki

    arXiv:2301.13075 ·

  6. QUBO-Based Optimization of Social Indicator Configurations for Working-Age Population Growth

    Hayate Wada, Seiya Miyamoto, Tatsumasa Ogawa, Kazuki Uehara, Masaru Hitomi, Masayuki Ohzeki

    arXiv:2607.25170 · 2026-07-28

  7. Robust Wavelength Selection for Partial Least Squares Sugar Content Estimation Using Combinatorial Bayesian Optimization

    Mitsunobu Kanebako, Ami S. Koshikawa, Masaru Hitomi, Takuro Tanaka, Mahito Chiba, Maiko Mori, Masayuki Ohzeki

    arXiv:2607.27645 · 2026-07-30

  8. Slepian Bounds on the Success Probability of Virtual Distillation

    Masayuki Ohzeki, Sasuke Kimata, Xinwei Lee, Hoong Chuin Lau

    大関研究室での活動による業績

    arXiv:2608.21342 v1 · 2026-08-21

教育活動

  1. Quantum Infinity for You in Italy: From HPC to Quantum Computing

    lecturer

    2026-02-02〜2026-02-04 · University of Rome La Sapienza, Marcello Conversi classroom, Marconi Building

    量子アニーリングの社会課題への応用事例を講演。

    活動紹介 ↗
  2. QI4U in PNU 2026

    lecturer / hands_on_instructor / mentor

    2026-02-24〜2026-02-26 · Pusan National University, Busan; hybrid

    量子アニーリングの応用講演、Pythonのライブコーディング、グループ個別メンタリングを実施。

    活動紹介 ↗
  3. Quantum Infinity for You in Taiwan 2026

    lecturer

    2026-03-16〜2026-03-18 · Syntrend Creative Park, Taipei

    量子アニーリングを用いる社会課題への研究事例を講演。

    活動紹介 ↗
  4. Quantum Infinity for You in China 2026

    lecturer / mentor

    2026-03-09〜2026-03-11 · Hangzhou Institute of Technology, Xidian University

    量子アニーリングの招待講演、最終発表への助言・フィードバック。

    活動紹介 ↗
  5. Quantum Universe Expo Series 2026 in Peru (QI4U Workshop)

    lecturer

    2026-03-11〜2026-03-13 · Pontificia Universidad Católica del Perú (PUCP), Lima

    量子アニーリングの講義を実施。

    活動紹介 ↗
  6. 実践的量子ソリューション創出論

    講師/授業設計・評価

    2024-04-11〜2024-08-01 · 東北大学・川内北キャンパス、青葉山サテライト+オンライン

    実践的量子ソリューション創出論:講師/授業設計・評価

  7. 福岡大学集中講義

    講師/授業設計

    2026-08-03〜2026-08-07 · 福岡大学941講義室

    福岡大学集中講義:講師/授業設計