activity
20222026
most citedCharge fluctuation and charge-resolved entanglement in a monitored quantum circuit with symmetry

50 citations · 60 across the 5 of their papers we have counts for

collaborators

5 papers

cond-mat.stat-mech2026

Effective Hamiltonian description on monitored Majorana chains: correlated power-law hoppings and unconventional entanglement scaling

Ken Mochizuki, Hisanori Oshima, Ryusuke Hamazaki +1

We investigate the structure of effective Hamiltonians governing monitored dynamics of a one-dimensional Majorana chain using Lyapunov spectral analysis. We focus on the gapless ph…

cond-mat.stat-mech2025★ 2 cited

An introduction to monitored quantum systems and quantum trajectories: spectrum, typicality, and phases

Ryusuke Hamazaki, Ken Mochizuki, Hisanori Oshima +1

Thanks to recent experimental advances in simulating and detecting quantum dynamics with high precision and controllability, our understanding of the physics of monitored quantum s…

quant-ph2024★ 4 cited

Topology and Spectrum in Measurement-Induced Phase Transitions

Hisanori Oshima, Ken Mochizuki, Ryusuke Hamazaki +1

Competition among repetitive measurements of noncommuting observables and unitary dynamics can give rise to a wide variety of entanglement phases. Here, we propose a general framew…

quant-ph2024★ 4 cited

Multifractality in monitored single-particle dynamics

Kohei Yajima, Hisanori Oshima, Ken Mochizuki +1

We study multifractal properties in time evolution of a single particle subject to repeated measurements. For quantum systems, we consider circuit models consisting of local unitar…

cond-mat.dis-nn2022★ 50 cited

Charge fluctuation and charge-resolved entanglement in a monitored quantum circuit with symmetry

Hisanori Oshima, Yohei Fuji

We study a (1+1)-dimensional quantum circuit consisting of Haar-random unitary gates and projective measurements that conserve a total charge and thus have symmetry.…