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Parity-time-symmetric quantum critical phenomena
Yuto Ashida, Shunsuke Furukawa, Masahito Ueda
Synthetic nonconservative systems with parity-time (PT) symmetric gain-loss structures can exhibit unusual spontaneous symmetry breaking that accompanies spectral singularity. Rece…
Fractional quantum Hall states of dipolar fermions in a strained optical lattice
Hiroyuki Fujita, Yuya O. Nakagawa, Yuto Ashida +1
We study strongly correlated ground states of dipolar fermions in a honeycomb optical lattice with spatial variations in hopping amplitudes. Similar to a strained graphene, such no…
Quantum critical behavior influenced by measurement backaction in ultracold gases
Yuto Ashida, Shunsuke Furukawa, Masahito Ueda
Recent realizations of quantum gas microscope offer the possibility of continuous monitoring of the dynamics of a quantum many-body system at the single-particle level. By analyzin…
Quantum Trajectory Thermodynamics with Discrete Feedback Control
Zongping Gong, Yuto Ashida, Masahito Ueda
We employ the quantum jump trajectory approach to construct a systematic framework to study the thermodynamics at the trajectory level in a nonequilibrium open quantum system under…