261 citations · 2.3k across the 57 of their papers we have counts for
10 papers · 1 filter
Phase transitions in sampling and error correction in local Brownian circuits
Subhayan Sahu, Shao-Kai Jian
We study the emergence of anticoncentration and approximate unitary design behavior in local Brownian circuits. The dynamics of circuit averaged moments of the probability distribu…
Training variational quantum algorithms with random gate activation
Shuo Liu, Shi-Xin Zhang, Shao-Kai Jian +1
Variational quantum algorithms (VQAs) hold great potentials for near-term applications and are promising to achieve quantum advantage on practical tasks. However, VQAs suffer from…
New critical states induced by measurement
Xinyu Sun, Hong Yao, Shao-Kai Jian
Finding new critical states of matter is an important subject in modern many-body physics. Here we study the effect of measurement and postselection on the critical ground state of…
Universal KPZ scaling in noisy hybrid quantum circuits
Shuo Liu, Ming-Rui Li, Shi-Xin Zhang +2
Measurement-induced phase transitions (MIPT) have attracted increasing attention due to the rich phenomenology of entanglement structures and their relation with quantum informatio…
Linear Growth of Circuit Complexity from Brownian Dynamics
Shao-Kai Jian, Gregory Bentsen, Brian Swingle
We calculate the frame potential for Brownian clusters of spins or fermions with time-dependent all-to-all interactions. In both cases the problem can be mapped to an effective…
TensorCircuit: a Quantum Software Framework for the NISQ Era
Shi-Xin Zhang, Jonathan Allcock, Zhou-Quan Wan +13
TensorCircuit is an open source quantum circuit simulator based on tensor network contraction, designed for speed, flexibility and code efficiency. Written purely in Python, and bu…
Phase transition in von Neumann entanglement entropy from replica symmetry breaking
Shao-Kai Jian, Brian Swingle
We study the entanglement transition in monitored Brownian SYK chains in the large- limit. Without measurement the steady state -th Rényi entropy is obtained by summing over…
Chaos-protected locality
Shao-Kai Jian, Brian Swingle
Microscopic speed limits that constrain the motion of matter, energy, and information abound in physics, from the "ultimate" speed limit set by light to Lieb-Robinson speed limits…
Entanglement Phases in large-N hybrid Brownian circuits with long-range couplings
Subhayan Sahu, Shao-Kai Jian, Gregory Bentsen +1
We develop solvable models of large- hybrid quantum circuits on qubits and fermions with long-range power-law interactions and continuous local monitoring, which provide analyti…
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…