Department of Information Physics and Computing,
Graduate School of Information Science and Technology,
The University of Tokyo
Curriculum Vitae
2023.1- Project Associate Professor, Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo
2021.11-2022.12 JSPS Postdoctoral Fellowships for Research in Japan
2021.6-2021.10 Project Researcher, Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo
2019-2021.5 Postdoctoral Researcher, Institute for Cross-Disciplinary Physics and Complex Systems (UIB-CSIC), Palma de Mallorca, Spain
2018-2019 Postdoctoral Researcher, Institute for Theoretical Physics at TU Berlin, Germany
2014.10-2018.11 Dr. rer. nat. (PhD) at TU Berlin, Germany
2012.10-2014.7 Master of Science in Physics at TU Berlin, Germany
Research Theme
Information theory, computational power of complex dynamical systems
Nonlinear laser dynamics, coupled lasers
Symmetry-breaking and restoring bifurcations
Complex amplitude and phase relationships
Publications
Papers
H. Shiratori, A. Röhm, T. Mihana, R. Horisaki, M. Naruse: Enlarged matrix method for stochastic decision making using orbital angular momenta, Nonlinear Theory and Its Applications, IEICE, Vol. 15, No. 3, pp. 519–537, July 2024. [doi]
S. Kotoku, T. Mihana, A. Röhm, R. Horisaki, M. Naruse : Asymmetric leader-laggard cluster synchronization for collective decision-making with laser network, Optics Express, Vol. 32, Issue 8, pp. 14300–14320, April 2024. [doi]
H. Shiratori, H. Shinkawa, A. Röhm, N. Chauvet, E. Segawa, J. Laurent, G. Bachelier, T. Yamagami, R. Horisaki, and M. Naruse: Asymmetric quantum decision-making, Scientific Reports, Vol. 13, Article No. 14636, Sep. 2023.[doi]
T. Okuyama, A. Röhm, T. Mihana, and M. Naruse: Acceleration of Approximate Matrix Multiplications on GPUs, Entropy, Vol. 25, Issue 8, 1130, July 2023.[doi]
H. Shinkawa, N. Chauvet, A. Röhm, T. Mihana, R. Horisaki, G. Bachelier, and M. Naruse: Bandit Approach to Conflict-Free Parallel Q-Learning in View of Photonic Implementation, Intelligent Computing, Vol. 2, Article ID 0046, Jul. 2023. [doi]
K. Tsuchiyama, A. Röhm, T. Mihana, R. Horisaki, and M. Naruse: Effect of temporal resolution on the reproduction of chaotic dynamics via reservoir computing, Chaos, Vol. 33, Issue 6, 063145, June 2023.[doi]
T. Yamagami, E. Segawa, T. Mihana, A. Röhm, R. Horisaki, and M. Naruse: Bandit Algorithm Driven by a Classical Random Walk and a Quantum Walk, Entropy, Vol. 25, Issue 6, 843, May 2023. [doi]
N. Asuke, T. Yamagami, T. Mihana, A. Röhm, R. Horisaki, and M. Naruse: Information-theoretical analysis of statistical measures for multiscale dynamics, Chaos, Vol. 33, Issue 4, 043138, April 2023.[doi]
H. Shinkawa, N. Chauvet, G. Bachelier, A. Röhm, R. Horisaki, and M. Naruse: Optimal preference satisfaction for conflict-free joint decisions, Complexity, Vol. 2023, Article ID 2794839, Feb. 2023.[doi]
T. Yamagami, E. Segawa, K. Tanaka, T. Mihana, A. Röhm, R. Horisaki, and M. Naruse: Skeleton structure inherent in discrete-time quantum walks, Physical Review A, Vol. 107, Issue 1, 012222, Jan. 2023. [doi]
N. Asuke, N. Chauvet, A. Röhm, K. Kanno, A. Uchida, T. Niiyama, S. Sunada, R. Horisaki, and M. Naruse: Analysis of temporal structure of laser chaos by Allan variance, Physical Review E, Vol. 107, Issue 1, 014211, Jan. 2023.[doi]
H. Shinkawa, N. Chauvet, A. Röhm, T. Mihana, R. Horisaki, G. Bachelier, and M. Naruse: Bandit approach to conflict-free multi-agent Q-learning in view of photonic implementation, arXiv:2212.09926.(link)
N. Fujita, A. Röhm, T. Mihana, R. Horisaki, A. Li, M. Hasegawa, and M. Naruse: Pairing Optimization via Statistics: Algebraic Structure in Pairing Problems and Its Application to Performance Enhancement, Entropy, Vol. 25, Issue 1, 146, Jan. 2023.[doi]
T. Yamagami, E. Segawa, N. Chauvet, A. Röhm, R. Horisaki, and M. Naruse: Directivity of quantum walk via its random walk replica, Complexity, Vol. 2022, Article ID 9021583, Oct. 2022.[doi]
N. Fujita, N. Chauvet, A. Roehm, R. Horisaki, A. Li, M. Hasegawa, and M. Naruse: Efficient Pairing in Unknown Environments: Minimal Observations and TSP-based Optimization, IEEE Access, Vol. 10, pp. 57630-57640, May 2022.[doi]
R. Horisaki, T. Aoki, Y. Nishizaki, A. Röhm, N. Chauvet, J. Tanida, and M. Naruse, Compressive propagation with coherence, Optics Letters, Vol. 47, Issue 3, pp. 613-616, Jan. 2022.[doi]
A. Röhm, D. J. Gauthier, and I. Fischer: Model-free inference of unseen attractors: Reconstructing phase space features from a single noisy trajectory using reservoir computing, Chaos, 31(10), 2021.[doi]
F. Stelzer, A. Röhm, R. Vicente, I. Fischer, and S. Yanchuk: Deep neural networks using a single neuron: folded-in-time architecture using feedback-modulated delay loops, Nat. Comm., 12(5164), 2021.[doi]
B. Vettelschoss, A. Röhm, and M. Soriano: Information Processing Capacity of a Single-Node Reservoir Computer: An Experimental Evaluation, IEEE Trans Neur. Netw. 33(6), 2021.[doi]
F. Stelzer, A. Röhm, K. Lüdge, and S. Yanchuk: Performance boost of time-delay reservoir computing by non-resonant clock cycle, Neural Netw., 124, 2020.[doi]
A. Röhm, and K. Lüdge: Reservoir Computing Using Laser Networks, IEEE Journal of Selected Topics in Quantum Electronics, 26(1), 2019.[doi]
A. Röhm, K. Lüdge, and I. Schneider: Bistability in two simple symmetrically coupled oscillators with symmetry-broken amplitude- and phase-locking, Chaos, 28(6):063114, 2018.[doi]
A. Röhm and K. Lüdge: Reservoir computing with delay in structured networks.Proc, SPIE, 10689, 2018.[doi]
A. Röhm and K. Lüdge: Multiplexed networks: reservoir computing with virtual and real nodes, J. Phys. Commun., 2:085007, 2018.[doi]
S. Meinecke, B. Lingnau, A. Röhm, and K. Lüdge: Stability of Optically Injected Two-State Quantum-Dot Lasers, Ann. Phys. (Berl.), 529:1600279, 2017.[doi]
A. Röhm, F. Böhm, and K. Lüdge: Small chimera states without multistability in a globally delay-coupled network of four lasers, Phys. Rev. E, 94:042204, 2016.[doi]
A. Röhm: Dynamic Scenarios in Two-State Quantum Dot Lasers, BestMasters 2015. Springer Spektrum, Wiesbaden, 2015.(link)
A. Röhm: B. Lingnau, and K. Lüdge. Understanding ground-state quenching in quantum-dot lasers, IEEE J. Quantum Electron., 51(1):2000211, 2015.[doi]
A. Röhm, B. Lingnau, and K. Lüdge: Ground-state modulation-enhancement by two-state lasing in quantum-dot laser devices, Appl. Phys. Lett., 106:191102, 2015.[doi]
Y. Kaptan, A. Röhm, B. Herzog, B. Lingnau, H. Schmeckebier, D. Arsenijevic, V. Mikhelashvili, O. Schops, M. Kolarczik, G. Eisenstein, D. Bimberg, U. Woggon, N. Owschimikow, and K. Lüdge: Stability of quantum-dot excited-state laser emission under simultaneous ground-state perturbation, Appl. Phys. Lett., 105:191105, 2014.[doi]
Conferences
International conferences
S. Kotoku, T. Mihana, A. Röhm, R. Horisaki, and M. Naruse: Chaotic leader-laggard cluster synchronization in laser networks for reinforcement learning, Dynamics Days Europe (Bremen, Germany, 2024.7.31)
A. Röhm, K. Kanno, K. Takashima, H. Ishii, A. Uchida, and M. Naruse: Reservoirs as driven dynamical systems, Dynamics Days Europe (Bremen, Germany, 2024.7.29)
T. Yamagami, E. Segawa, T. Mihana, A. Röhm, R. Horisaki, and M. Naruse: Spatial best-arm identification via quantum walk search, 10th International Workshop of Quantum Simulation and Quantum Walks (QSQW 2023) (Tsukuba, 2023.11.10)
H. Shiratori, A. Röhm, T. Mihana, R. Horisaki, and M. Naruse: Correlated Equilibrium Through Quantum Interference, 2023 International Symposium on Nonlinear Theory and Its Applications(NOLTA2023), Catania, 2023.9.28
T. Yamagami, E. Segawa, T. Mihana, A. Röhm, R. Horisaki, and M. Naruse: Quantum-Walk-Based Bandit Algorithm and its Performance, 2023 International Symposium on Nonlinear Theory and Its Applications(NOLTA2023), Catania, 2023.9.26
A. Röhm, K. Tsuchiyama, T. Mihana, R. Horisaki, D. J. Gauthier, I. Fischer, and M. Naruse: Reconstructing seen and unseen attractors from data via autonomous-mode reservoir computing, SPIE Photonics West 2023, San Francisco, 2023.1.31 (Invited)
N. Asuke, T. Mihana, A. Röhm, R. Horisaki and M. Naruse: Information-theoretical analysis of statistical measures for multi-scale dynamics, The 9th Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS 2023), Gyeongju, Korea, 2023.1.5
T. Yamagami, A. Röhm, T. Mihana, R. Horisaki, M. Naruse, and E. Segawa: Bandit Algorithm via Quantum Walk, The 9th Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS 2023), Gyeongju, Korea, 2023.1.5
K. Tsuchiyama, A. Röhm, T. Mihana, R. Horisaki and M. Naruse: Influence of sampling frequency in autonomous attractor reconstruction by reservoir computing, The 9th Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS 2023), Gyeongju, Korea, 2023.1.5
T. Yamagami, E. Segawa, K. Tanaka, T. Mihana A. Röhm, R. Horisaki, and M. Naruse: Skeleton structure inherent in quantum walks, Proceedings of the 2022 International Symposium on Nonlinear Theory and Its Applications (NOLTA2022), pp. 446-449, Online, 2022.12.14
N. Fujita, A. Rohm, T. Mihana, R. Horisaki, A. Li, M. Hasegawa, and M. Naruse: An efficient observation algorithm that achieves the minimum number of measurements for pairing optimization, Proceedings of the 2022 International Symposium on Nonlinear Theory and Its Applications (NOLTA2022), pp. 331-334, Online, 2022.12.13
H. Shiratori, H. Shinkawa, A. Röhm, N. Chauvet, G. Bachelier, J. Laurent, T. Mihana, R. Horisaki, and M. Naruse: Asymmetric collective decision making through quantum interference, Proceedings of the 2022 International Symposium on Nonlinear Theory and Its Applications (NOLTA2022), pp. 389-392, Online, 2022.12.13
H. Suzui, K. Uchiyama, K. Uchida, N. Chauvet, A. Röhm, R. Horisaki, H. Hori, and M. Naruse: Mathematical modeling of bending phenomena in photochromic single crystals by catastrophe theory, The 13th Asia-Pacific Conference on Near-Field Optics (APNFO13), Sapporo, 2022.7.29
T. Yamagami, E. Segawa, N. Chauvet, A. Röhm, R. Horisaki, and M. Naruse: Generation of one-dimensional random walks driven by quantum walks, International Conference on Emerging Technologies for Communications (ICETC), Online, 2021.12.1
N. Fujita, N. Chauvet, A. Röhm, R. Horisaki, A. Li, M. Hasegawa, and M. Naruse: Proposal of efficient algorithms for large scale pairing, International Conference on Emerging Technologies for Communications (ICETC), Online, 2021.12.1
T. Urushibara, N. Chauvet, A. Röhm, S. Kochi, S. Sunada, K. Kanno, A. Uchida, R. Horisaki, and M. Naruse: Parallel bandit architecture for reinforcement learning using chaotic laser time series, Proceedings of International Symposium on Physics and Applications of Laser Dynamics 2021(IS-PALD), pp. 25-26, Online, 2021.11.17
H. Shinkawa, N. Chauvet, G. Bachelier, S. Huant, A. Röhm, R. Horisaki, and M. Naruse: Ensuring stability in competitive decision making by quantum interference in orbital angular momentum of light, Proceedings of International Symposium on Physics and Applications of Laser Dynamics 2021(IS-PALD), pp. 75-76, Online, 2021.11.17
H. Suzui, K. Uchiyama, K. Uchida, N. Chauvet, A. Röhm, R. Horisaki, H. Hori, and M. Naruse: Continuous observation of boundary formation on photochromic materials observed by double-probe AFM, Proceedings of International Symposium on Physics and Applications of Laser Dynamics 2021(IS-PALD), pp. 81-82, Online, 2021.11.17
N. Asuke, N. Chauvet, A. Röhm, K. Kanno, A. Uchida, R. Horisaki, and M. Naruse: Analysis of the temporal structure of laser chaos by Allan variance, Proceedings of International Symposium on Physics and Applications of Laser Dynamics 2021(IS-PALD), pp. 101-102, Online, 2021.11.17
A. Röhm, F. Stelzer, R. Vicente, I. Fischer, and S. Yanchuk: Folded-in-Time Deep Neural Networks: Constructing and training a network with a single active element using feedback-modulated delay lines, Proceedings of International Symposium on Physics and Applications of Laser Dynamics 2021(IS-PALD), pp. 1-2, Online, 2021.11.16
SPIE Photonics Europe, Strassbourg, France, 2018
Dynamics Days Europe, Szeged, Hungary, 2017
Dynamics Days Europe, Corfu, Greece, 2016
Lindau Nobel Laureate Meeting, Lindau, Germany, 2016
K. Takashima, A. Roehm, T. Mihana, R. Horisaki, and M. Naruse: Model-free prediction of driven dynamical systems using reservoir computing, 第84回応用物理学会秋季学術講演会, 2023.9.22(熊本城ホール)
白鳥 帆香, 新川 浩彬, A. Röhm, N. Chauvet, G. Bachelier, J. Laurent, 巳鼻 孝朋, 堀﨑 遼一, 成瀬 誠: 量子干渉による非対等な集団的意思決定, 第83回応用物理学会秋季学術講演会, 講演予稿集, p. 19-045, 2022.9.23(東北大学川内北キャンパス+オンライン)
A. Roehm, F. Stelzer, R. Vicente, I. Fischer, S. Yanchuk, S. Sunada, T. Niiyama, R. Horisaki, and M. Naruse: Folded-in-time deep neural networks: Emulating deep neural networks via delay dynamics, 第83回応用物理学会秋季学術講演会, 講演予稿集, p. 19-006, 2022.9.20(東北大学川内北キャンパス+オンライン)