6 papers · 1 filter
Hierarchical entanglement transitions and hidden area-law sectors in quantum many-body dynamics
Tarun Grover
Chaotic many-body dynamics typically generates volume-law entanglement from initially low-entangled states. We reveal an intricate, hierarchical entanglement structure in local qua…
Zipping many-body quantum states: a scalable approach to diagonal entropy
Yu-Hsueh Chen, Tarun Grover
The outcomes of projective measurements on a quantum many-body system in a chosen basis are inherently probabilistic. The Shannon entropy of this probability distribution (the "dia…
An analog of topological entanglement entropy for mixed states
Ting-Tung Wang, Menghan Song, Zi Yang Meng +1
We propose the convex-roof extension of quantum conditional mutual information ("co(QCMI)") as a diagnostic of topological order in a mixed state. We focus primarily on topological…
Symmetry-enforced many-body separability transitions
Yu-Hsueh Chen, Tarun Grover
We study quantum many-body mixed states with a symmetry from the perspective of separability, i.e., whether a mixed state can be expressed as an ensemble of short-range entangled (…
Separability transitions in topological states induced by local decoherence
Yu-Hsueh Chen, Tarun Grover
We study states with intrinsic topological order subjected to local decoherence from the perspective of separability, i.e., whether a decohered mixed state can be expressed as an e…
Unconventional topological mixed-state transition and critical phase induced by self-dual coherent errors
Yu-Hsueh Chen, Tarun Grover
A topological phase can undergo a phase transition driven by anyon condensation. A potential obstruction to such a mechanism could arise if there exists a symmetry between anyons t…