Disentangling transitions in topological order induced by boundary decoherence
TC Lu - Physical Review B, 2024 - APS
We study the entanglement structure of topological orders subject to decoherence on the
bipartition boundary. Focusing on the toric codes in d space dimensions for d= 2, 3, 4, we …
bipartition boundary. Focusing on the toric codes in d space dimensions for d= 2, 3, 4, we …
Spontaneous strong symmetry breaking in open systems: Purification perspective
We explore the landscape of the decoherence effect in mixed-state ensembles from a
purification perspective. We analyze the spontaneous strong-to-weak symmetry breaking …
purification perspective. We analyze the spontaneous strong-to-weak symmetry breaking …
Towards a classification of mixed-state topological orders in two dimensions
The classification and characterization of topological phases of matter is well understood for
ground states of gapped Hamiltonians that are well isolated from the environment. However …
ground states of gapped Hamiltonians that are well isolated from the environment. However …
Strong-to-weak spontaneous symmetry breaking in mixed quantum states
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 …
where each individual pure state in the quantum ensemble is symmetric with the same …
Spontaneous symmetry breaking in open quantum systems: strong, weak, and strong-to-weak
D Gu, Z Wang, Z Wang - arXiv preprint arXiv:2406.19381, 2024 - arxiv.org
Depending on the coupling to the environment, symmetries of open quantum systems
manifest in two distinct forms, the strong and the weak. We study the spontaneous symmetry …
manifest in two distinct forms, the strong and the weak. We study the spontaneous symmetry …
An analog of topological entanglement entropy for mixed states
We propose the convex-roof extension of quantum conditional mutual information (" co
(QCMI)") as a diagnostic of long-range entanglement in a mixed state. We focus primarily on …
(QCMI)") as a diagnostic of long-range entanglement in a mixed state. We focus primarily on …
Hydrodynamics as the effective field theory of strong-to-weak spontaneous symmetry breaking
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 …
proposed that the equivalence of microcanonical and canonical ensembles in statistical …
Robust preparation of ground state phases under noisy imaginary time evolution
Non-unitary state preparation protocols such as imaginary time evolution (ITE) offer
substantial advantages relative to unitary ones, including the ability to prepare certain long …
substantial advantages relative to unitary ones, including the ability to prepare certain long …
Approximate quantum error correcting codes from conformal field theory
The low-energy subspace of a conformal field theory (CFT) can serve as a quantum error
correcting code, with important consequences in holography and quantum gravity. We …
correcting code, with important consequences in holography and quantum gravity. We …
Intrinsic mixed-state SPT from modulated symmetries and hierarchical structure of anomaly
Y You, M Oshikawa - arXiv preprint arXiv:2407.08786, 2024 - arxiv.org
We introduce a class of intrinsic symmetry-protected topological mixed-state (mSPT) in open
quantum systems that feature modulated symmetries, such as dipole and subsystem …
quantum systems that feature modulated symmetries, such as dipole and subsystem …