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Topological Phases of Non-Hermitian Systems
Recent experimental advances in controlling dissipation have brought about unprecedented flexibility in engineering non-Hermitian Hamiltonians in open classical and quantum systems. A particular…
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Non-Hermitian physics
A review is given on the foundations and applications of non-Hermitian classical and quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra, including Jordan normal…
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Information Retrieval and Criticality in Parity-Time-Symmetric Systems.
By investigating information flow between a general parity-time (PT-)symmetric non-Hermitian system and an environment, we find that the complete information retrieval from the environment can be…
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Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics
TLDR
It is shown that in non-Hermitian systems, such as those with gain and loss, time-reversal and particle-hole symmetries are equivalent to each other, unifying otherwise distinct topological classes and leading to emergent non- hermitian topological phases.
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Measurement-induced quantum criticality under continuous monitoring
We investigate entanglement phase transitions from volume-law to area-law entanglement in a quantum many-body state under continuous position measurement on the basis of the quantum trajectory…
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General achievable bound of extractable work under feedback control.
A general achievable upper bound of extractable work under feedback control is given, where nonequilibrium equalities are generalized so as to be applicable to error-free measurements. The upper…
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Parity-time-symmetric quantum critical phenomena
TLDR
It is reported that a combination of spectral singularity and quantum criticality yields an exotic universality class which has no counterpart in known critical phenomena.
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Quantum critical behavior influenced by measurement backaction in ultracold gases
Recent realizations of quantum gas microscope offer the possibility of continuous monitoring of the dynamics of a quantum many-body system at the single-particle level. By analyzing effective…
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Parity-time-symmetric topological superconductor
Nonequilibrium open systems effectively described by non-Hermitian Hamiltonians with parity-time ($P\phantom{\rule{0}{0ex}}T$) symmetry have recently attracted considerable attention due to their…
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Quantum Electrodynamic Control of Matter: Cavity-Enhanced Ferroelectric Phase Transition
The light-matter interaction can be utilized to qualitatively alter physical properties of materials. Recent theoretical and experimental studies have explored this possibility of controlling matter…
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