29 citations · 91 across the 15 of their papers we have counts for
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Optimal Disorder Strength for Approximate Unitary -Designs in Spin Chains
Tian-Gang Zhou, Yi-Neng Zhou, Thierry Giamarchi +1
Quantum simulators with disordered spin Hamiltonians offer a natural route to Haar-like unitary ensembles, but face a competition. Disorder enhances randomness, yet strong disorder…
Three Hamiltonians are Sufficient for Unitary -Design in Temporal Ensemble
Yi-Neng Zhou, Tian-Gang Zhou, Julian Sonner
Unitary -designs are central to quantum information and quantum many-body physics, as they provide efficient proxies for Haar-random dynamics. We study how chaotic Hamiltonian e…
Universal Predictors for Mixing Time more than Liouvillian Gap
Yi-Neng Zhou
We analyze the mixing time of open quantum systems governed by the Lindblad master equation, showing that it is determined not only by the Liouvillian gap, but also by the trace-no…
Realizing Unitary -designs with a Single Quench
Yi-Neng Zhou, Robin Löwenberg, Julian Sonner
We present a single-quench protocol that generates unitary -designs with minimal control. A system first evolves under a random Hamiltonian ; at a switch time $t_s \geq t_{…
Measuring Rényi entropy with an Echo Protocol
Yi-Neng Zhou, Robin Löwenberg, Julian Sonner
We present efficient and practical protocols to measure the second Rényi entropy, whose exponential is known as the purity. Our approach is based on expressing the purity in terms…
Generalized Loschmidt echo and information scrambling in open systems
Yi-Neng Zhou, Chang Liu
Quantum information scrambling, typically explored in closed quantum systems, describes the spread of initially localized information throughout a system and can be quantified by m…
Full Counting Statistics across the Entanglement Phase Transition of Non-Hermitian Hamiltonians with Charge Conservations
Tian-Gang Zhou, Yi-Neng Zhou, Pengfei Zhang
Performing quantum measurements produces not only the expectation value of a physical observable but also the probability distribution of all possible outcomes . The…
Generalized Lindblad Master Equation for Measurement-Induced Phase Transition
Yi-Neng Zhou
The measurement-induced phase transition (MIPT) occurs when the system is evolving under unitary evolution together with local measurements followed by post-selection. We propose a…