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quant-ph2024★ 9 cited
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…
quant-ph2024
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…