102 citations · 1.4k across the 61 of their papers we have counts for
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Bulk-Measurement-Induced Boundary Phase Transition in Toric Code and Gauge-Higgs Model
Yoshihito Kuno, Takahiro Orito, Ikuo Ichinose
Study of boundary phase transition in toric code under cylinder geometry via bulk projective measurement is reported. As the frequency of local measurement for bulk qubits is incre…
Interplay between lattice gauge theory and subsystem codes
Yoshihito Kuno, Ikuo Ichinose
It is now widely recognized that the toric code is a pure gauge-theory model governed by a projective Hamiltonian with topological orders. In this work, we extend the interplay bet…
Production of lattice gauge-Higgs topological states in measurement-only quantum circuit
Yoshihito Kuno, Ikuo Ichinose
By imaginary-time evolution with Hamiltonian, an arbitrary state arrives in the system's ground state. In this work, we conjecture that this dynamics can be simulated by measuremen…
Emergence symmetry protected topological phase in spatially tuned measurement-only circuit
Yoshihito Kuno, Ikuo Ichinose
Topological phase transition induced by spatially-tuned single-site measurement is investigated in a measurement-only circuit, in which three different types of projective measurem…
Multiple quantum scar states and emergent slow-thermalization in the flat-band system
Yoshihito Kuno, Tomonari Mizoguchi, Yasuhiro Hatsugai
Quantum many-body scars (QMBS) appear in a flat-band model with interactions on the saw-tooth lattice. The flat-band model includes a compact support localized eigenstates, called…
Plateau transitions of spin pump and bulk-edge correspondence
Yoshihito Kuno, Yasuhiro Hatsugai
Sequential plateau transitions of quantum spin chains (=1,3/2,2 and 3) are demonstrated by a spin pump using dimerization and staggered magnetic field as synthetic dimensions. T…
Exact projector Hamiltonian, local integrals of motion, and many-body localization with topological order
Takahiro Orito, Yoshihito Kuno, Ikuo Ichinose
In this work, we construct an exact projector Hamiltonian with interactions, which is given by a sum of mutually commuting operators called stabilizers. The model is based on the r…
Effects of power-law correlated disorders in XXZ spin chain: Many-body localized to thermal phase transition and its critical regime
Takahiro Orito, Yoshihito Kuno, Ikuo Ichinose
We study a canonical many-body-localized (MBL) system with power-law-correlated disorders: spin chain in a random magnetic field. The power-law-correlated disorder…
Many-body-localization induced protection of symmetry-protected topological order in a XXZ spin model
Yoshihito Kuno
There is a counter-intuitive expectation proposed by Huse {\it et al} [Phys. Rev. B {\bf 88}, 014206 (2013)], and Chandran {\it et al} [Phys. Rev. B 89,144201 (2014)]: Localization…
Disorder-induced Chern insulator in Harper--Hofstadter--Hatsugai model
Yoshihito Kuno
We study the effects of disorder on the topological Chern insulating phase in the Harper--Hofstadter--Hatsugai (HHH) model. The model with half flux has a bulk band gap and thus ex…
Flat-band many-body localization and ergodicity breaking in the Creutz ladder
Yoshihito Kuno, Takahiro Orito, Ikuo Ichinose
We study disorder-free many-body localization in the flat-band Creutz ladder, which was recently realized in cold-atoms in an optical lattice. In a non-interacting case, the flat-b…