71 citations · 115 across the 7 of their papers we have counts for
7 papers
Calderbank-Shor-Steane codes on group-valued qudits
Ben T. McDonough, Jian-Hao Zhang, Victor V. Albert +1
Calderbank-Shor-Steane (CSS) codes are a versatile quantum error-correcting family built out of commuting - and -type checks. We introduce CSS-like codes on -valued qudits…
Many-body quantum catalysts for transforming between phases of matter
David T. Stephen, Rahul Nandkishore, Jian-Hao Zhang
A catalyst is a substance that enables otherwise impossible transformations between states of a system, without being consumed in the process. In this work, we apply the notion of…
Holographic View of Mixed-State Symmetry-Protected Topological Phases in Open Quantum Systems
Shijun Sun, Jian-Hao Zhang, Zhen Bi +1
We establish a holographic duality between d-dimensional mixed-state symmetry-protected topological phases (mSPTs) and (d+1)-dimensional subsystem symmetry-protected topological st…
Fluctuation-Dissipation Theorem and Information Geometry in Open Quantum Systems
Jian-Hao Zhang, Cenke Xu, Yichen Xu
We propose a fluctuation-dissipation theorem in open quantum systems from an information-theoretic perspective. We define the fidelity susceptibility that measures the sensitivity…
Strong-to-weak spontaneous breaking of 1-form symmetry and intrinsically mixed topological order
Carolyn Zhang, Yichen Xu, Jian-Hao Zhang +3
Topological orders in 2+1d are spontaneous symmetry-breaking (SSB) phases of 1-form symmetries in pure states. The notion of symmetry is further enriched in the context of mixed st…
Hydrodynamics as the effective field theory of strong-to-weak spontaneous symmetry breaking
Xiaoyang Huang, Marvin Qi, Jian-Hao Zhang +1
Inspired by the hunt for new phases of matter in quantum mixed states, it has recently been proposed that the equivalence of microcanonical and canonical ensembles in statistical m…
Strong-to-Weak Spontaneous Symmetry Breaking in Mixed Quantum States
Leonardo A. Lessa, Ruochen Ma, Jian-Hao Zhang +3
Symmetry in mixed quantum states can manifest in two distinct forms: strong symmetry, where each individual pure state in the quantum ensemble is symmetric with the same charge, an…