1 citations · 1 across the 4 of their papers we have counts for
5 papers
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…
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…
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 efficient proxies for Haar-random dynamics. We study how chaotic Hamiltonian evolution can g…
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_{…
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…