From the 1 of 11 linked papers with an AI index.
11 papers
Microscopic study of topological phase transitions: Percolation point of view
Keisuke Kataoka, Ikuo Ichinose
The paper investigates how decoherence drives transitions between topologically ordered quantum states by applying percolation theory, introducing quasi‑local topological entanglem…
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…
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…
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…
System-environmental entanglement in critical spin systems under -decoherence and its relation to strong and weak symmetries
Yoshihito Kuno, Takahiro Orito, Ikuo Ichinose
Open quantum many-body systems exhibit nontrivial behavior under decoherence. In particular, system-environmental entanglement (SEE) is one of the efficient quantities for classify…
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…