600 citations · 3.2k across the 58 of their papers we have counts for
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Free fermions under adaptive quantum dynamics
Vikram Ravindranath, Zhi-Cheng Yang, Xiao Chen
We study free fermion systems under adaptive quantum dynamics consisting of unitary gates and projective measurements followed by corrective unitary operations. We further introduc…
Entanglement dynamics in U(1) symmetric hybrid quantum automaton circuits
Yiqiu Han, Xiao Chen
We study the entanglement dynamics of quantum automaton (QA) circuits in the presence of U(1) symmetry. We find that the second Rényi entropy grows diffusively with a logarithmic c…
Robust Oscillations and Edge Modes in Nonunitary Floquet Systems
Vikram Ravindranath, Xiao Chen
We explore oscillatory behaviour in a family of periodically driven spin chains which are subject to a weak measurement followed by post-selection. We discover a transition to an o…
Entanglement structure in the volume-law phase of hybrid quantum automaton circuits
Yiqiu Han, Xiao Chen
We study entanglement fluctuations and quantum error correction in the weakly monitored volume-law phase of quantum automaton circuits subject to repeated local measurements. We nu…
Measurement induced entanglement transition in two dimensional shallow circuit
Hanchen Liu, Tianci Zhou, Xiao Chen
We prepare two dimensional states generated by shallow circuits composed of (1) one layer of two-qubit CZ gate or (2) a few layers of two-qubit random Clifford gate. After measurin…
Non-unitary free boson dynamics and the boson sampling problem
Xiao Chen
We explore the free boson unitary dynamics subject to repeated random forced measurement. The input state is chosen as a Fock state in real space with the particle number conserved…
Measurement-induced criticality in -symmetric quantum automaton circuits
Yiqiu Han, Xiao Chen
We study entanglement dynamics in hybrid -symmetric quantum automaton circuits subject to local composite measurements. We show that there exists an entanglement phas…
Quantum error as an emergent magnetic field
Shao-Kai Jian, Chunxiao Liu, Xiao Chen +2
We investigate the effect of quantum errors on a monitored Brownian Sachdev-Ye-Kitaev (SYK) model featuring a measurement-induced phase transition that can be understood as a symme…
Non-unitary Entanglement Dynamics in Continuous Variable Systems
Tianci Zhou, Xiao Chen
We construct a random unitary Gaussian circuit for continuous-variable (CV) systems subject to Gaussian measurements. We show that when the measurement rate is nonzero, the steady…
Measurement-induced phase transitions in quantum automaton circuits
Jason Iaconis, Andrew Lucas, Xiao Chen
We study the entanglement dynamics in a generic quantum automaton circuit subjected to projective measurements. We design an efficient algorithm which not only allows us to perform…
Many-body quantum dynamics slows down at low density
Xiao Chen, Yingfei Gu, Andrew Lucas
We study quantum many-body systems with a global U(1) conservation law, focusing on a theory of interacting fermions with charge conservation, or interacting spins with one…
Emergent conformal symmetry in non-unitary random dynamics of free fermions
Xiao Chen, Yaodong Li, Matthew P. A. Fisher +1
We present random quantum circuit models for non-unitary quantum dynamics of free fermions in one spatial dimension. Numerical simulations reveal that the dynamics tends towards st…
Conformal invariance and quantum non-locality in critical hybrid circuits
Yaodong Li, Xiao Chen, Andreas W. W. Ludwig +1
We establish the emergence of a conformal field theory (CFT) in a (1+1)-dimensional hybrid quantum circuit right at the measurement-driven entanglement transition by revealing spac…