125 citations · 1.3k across the 105 of their papers we have counts for
105 papers
Microscopic study of topological phase transitions: Percolation point of view
Keisuke Kataoka, Ikuo Ichinose
We investigate microscopic mechanisms underlying decoherence-induced transitions between topologically ordered states. As a first case study, we analyze the color code using topolo…
Decohered color code and emerging mixed toric code by anyon proliferation: Topological entanglement negativity perspective
Keisuke Kataoka, Yoshihito Kuno, Takahiro Orito +1
We study how the color code under decoherence gives rise to an intrinsic mixed-state topological order (imTO), which has no counterpart in pure ground states of local gapped Hamilt…
Mixed-state phase structure of gauge-Higgs subsystem codes under logical-preserving decoherence
Yoshihito Kuno, Ikuo Ichinose
Some of lattice-gauge-theory models, in particular gauge-Higgs model (GHM), can be regarded and work as a subsystem code. This work studies the effect of local-gauge-symmetric deco…
Measurement-only circuit of perturbed toric code on triangular lattice: Topological entanglement, 1-form symmetry and logical qubits
Keisuke Kataoka, Yoshihito Kuno, Takahiro Orito +1
Measurement-only (quantum) circuit (MoC) gives possibility to realize the states with rich entanglements, topological orders and quantum memories. This work studies the MoC, in whi…
Succession of Ising criticality and its threshold in critical quantum Ising model subject to symmetric decoherence
Yoshihito Kuno, Takahiro Orito, Ikuo Ichinose
We investigate a mixed state quantum criticality in the Ising model under decoherence. In the doubled Hilbert space formalism, the decohered state resides on the self-dual c…
Rényi and Shannon mutual information in critical and decohered critical system
Yoshihito Kuno, Takahiro Orito, Ikuo Ichinose
We investigate a critical many-body system by introducing a Rényi generalized mutual information, connecting between Rényi mutual information and Rényi Shannon mutual information.…