### Profile

Manaka Okuyama

Assistant Professor, Tanaka-Ohzeki group, Graduate School of Information Sciences, Tohoku University

### Contact Information

Address: Graduate School of Information Sciences, Tohoku University, Aramaki-Aza-Aoba 6-3-09, Aoba-ku, Sendai 980-8579, Japan

E-mail: manaka.okuyama.d2(at)tohoku.ac.jp

### Research Interests

Correlation inequalities for spin-glass models

Classical nonlinear integrable systems

Mean-field quantum spin systems and optimal control theory

Quantum speed limit, classical speed limit and energy-time uncertainty relation

Shortcuts to adiabaticity

Quantum annealing

### Papers

M. Okuyama, K. Ohki, and M. Ohzeki, "Threshold theorem in isolated quantum dynamics with local stochastic control errors", arXiv:2009.11151.

M. Okuyama and M. Ohzeki, "Exact solution of free entropy for matrix-valued geometric Brownian motion with non-commutative matrices via the replica method", arXiv:2006.00201.

M. Okuyama and M. Ohzeki, "Upper bound on the second derivative of the quenched pressure in spin-glass models: weak Griffiths second inequality", arXiv:2005.06757.

M. Okuyama and M. Ohzeki, "Some inequalities for correlation functions of Ising models with quenched randomness", arXiv:2004.05832.

M. Okuyama and M. Ohzeki, "Inequality for local energy of Ising models with quenched randomness and its application", arXiv:2001.10707, J. Phys. Soc. Jpn.

**89,**064704 (2020).M. Okuyama and M. Ohzeki, "An exact solution of the partition function for mean-field quantum spin systems without the static approximation", arXiv:1808.09707.

M. Okuyama and M. Ohzeki, "A useful fundamental speed limit for the imaginary-time Schrodinger equation", arXiv:1806.09040.

M. Okuyama, R. Takahashi and M. Ohzeki , "Comment on "Energy-time uncertainty relation for driven quantum systems" and "Quantum Speed Limit for Non-Markovian Dynamics"", arXiv.1802.00995.

M. Okuyama and M. Ohzeki, "Quantum speed limit is not quantum", Phys. Rev. Lett.

**120**, 070402 (2018), arXiv:1710.03498.M. Okuyama and K. Takahashi, "Quantum-classical correspondence of shortcuts to adiabaticity", J. Phys. Soc. Jpn.

**86**, 043002 (2017), JPSJ Editors' Choice, arXiv:1701.07927.M. Okuyama and K. Takahashi, "From classical nonlinear integrable systems to quantum shortcuts to adiabaticity", Phys. Rev. Lett. 117, 070401 (2016), arXiv:1603.01053.

M. Okuyama, Y. Yamanaka, H. Nishimori, and M. M. Rams, "Anomalous behavior of the energy gap in the one-dimensional quantum XY model", Phys. Rev. E

**92**, 052116 (2015), arXiv:1508.02814.

Thesis

Master Thesis (Department of Physics, Tokyo Institute of Technology )

Title: Shortcuts to Adiabaticity and Classical Nonlinear Integrable Systems

Supervisor: Prof. Hidetoshi Nishimori

Doctoral Thesis (Department of Physics, Tokyo Institute of Technology )

Title: Study on real and imaginary time dynamical effects in quantum and classical systems

Supervisor: Prof. Hidetoshi Nishimori