18 citations · 28 across the 3 of their papers we have counts for
6 papers
Tensor-network approach to thermalization in open quantum many-body systems
Hayate Nakano, Tatsuhiko Shirai, Takashi Mori
We investigate the relaxation dynamics of open non-integrable quantum many-body systems in the thermodynamic limit by using a tensor-network formalism. We simulate the Lindblad qua…
Guiding Principle for Minor-Embedding in Simulated-Annealing-Based Ising Machines
Tatsuhiko Shirai, Shu Tanaka, Nozomu Togawa
We propose a novel type of minor-embedding (ME) in simulated-annealing-based Ising machines. The Ising machines can solve combinatorial optimization problems. Many combinatorial op…
Resolving Discrepancy between Liouvillian Gap and Relaxation Time in Boundary-Dissipated Quantum Many-Body Systems
Takashi Mori, Tatsuhiko Shirai
The gap of the Liouvillian spectrum gives the asymptotic decay rate of a quantum dissipative system, and therefore its inverse has been identified as the slowest relaxation time. I…
Dynamical phase transition in Floquet optical bistable systems: An approach from finite-size quantum systems
Tatsuhiko Shirai, Synge Todo, Seiji Miyashita
We study a dynamical phase transition in optical bistable systems subject to a time-periodic driving field. The phase transition occurs in the structure of limit cycle as a functio…
Thermalization in open many-body systems based on eigenstate thermalization hypothesis
Tatsuhiko Shirai, Takashi Mori
We investigate steady states of macroscopic quantum systems under dissipation not obeying the detailed balance condition. We argue that the Gibbs state at an effective temperature…
Optical Bistability in a Low Photon-Density Regime
Tatsuhiko Shirai, Synge Todo, Hans de Raedt +1
We give a microscopic description of the optical bistability, where the transmission coefficient has two different values as a function of input light intensity, and the system exh…