27 citations · 71 across the 8 of their papers we have counts for
10 papers
Bath-assisted cooling without resets
Xie-Hang Yu, Zherui Chen, Lin Lin
Cooling an arbitrary mixed state to a pure ground state requires transferring its entropy to an environment. Can a single coherent bath contact accomplish this without repeated bat…
Near-optimal quantum simulation of lattice Lindbladian dynamics
Rahul Trivedi, Xiehang Yu, Daniel Malz
We consider the problem of simulating dynamics under geometrically local Lindbladians acting on a lattice of qudits. We present an algorithm to approximate the time evolution under…
Ward-Takahashi Identity and Gauge-Invariant Response Theory for Open Quantum Systems
Hongchao Li, Xie-Hang Yu, Masaya Nakagawa +1
We derive the Ward-Takahashi identity and establish the gauge-invariant response theory for open quantum systems described by Lindbladians to show that particle-number conservation…
Optimizing digital quantum simulation of open quantum lattice models
Xie-Hang Yu, Hongchao Li, J. Ignacio Cirac +1
Many-body systems arising in condensed matter physics and quantum optics inevitably couple to the environment and need to be modelled as open quantum systems. While near-optimal al…
Light-cones in many-body open quantum systems with memory
Rahul Trivedi, Xie-Hang Yu, Xiehang Yu +1
Memory effects in many-body quantum systems interacting with an environment significantly impact their behavior. Nevertheless, much of our understanding of many-body open quantum s…
Dissipative Superfluidity in a Molecular Bose-Einstein Condensate
Hongchao Li, Xie-Hang Yu, Masaya Nakagawa +1
Motivated by recent experimental realization of a Bose-Einstein condensate (BEC) of dipolar molecules, we develop superfluid transport theory for a dissipative BEC to show that a w…
Dual-isometric Projected Entangled Pair States
Xie-Hang Yu, J. Ignacio Cirac, Pavel Kos +1
Efficient characterization of higher dimensional many-body physical states presents significant challenges. In this paper, we propose a new class of Project Entangled Pair State (P…
Hierarchical generalization of dual unitarity
Xie-Hang Yu, Zhiyuan Wang, Pavel Kos
Quantum dynamics with local interactions in lattice models display rich physics, but is notoriously hard to study. Dual-unitary circuits allow for exact answers to interesting phys…
Yang-Lee Zeros, Semicircle Theorem, and Nonunitary Criticality in Bardeen-Cooper-Schrieffer Superconductivity
Hongchao Li, Xie-Hang Yu, Masaya Nakagawa +1
Yang and Lee investigated phase transitions in terms of zeros of partition functions, namely, Yang-Lee zeros [Phys. Rev. 87, 404 (1952); Phys. Rev. 87, 410 (1952)]. We show that th…
Free-fermion Page Curve: Canonical Typicality and Dynamical Emergence
Xie-Hang Yu, Zongping Gong, J. Ignacio Cirac
We provide further analytical insights into the newly established noninteracting (free-fermion) Page curve, focusing on both the kinematic and dynamical aspects. First, we unveil t…