A classical polynomial-time sampler exists for the output distribution of amplitude-damped IQP circuits with logarithmic depth and arbitrary l-local diagonal gates.
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Introduces absolute Schmidt number for states invariant under global unitaries, with witness and moment-based detection methods plus resource measures, extended to covariant channels.
Quantum information lifetime scales exponentially with system size under continuous monitoring via mid-circuit measurements, proven analytically for Haar random unitaries and confirmed numerically and experimentally, unlike the linear scaling without monitoring.
Anomalous heat flow occurs in quantum prepare-transform-measure protocols only when noncontextuality inequalities are violated, for evolution times in (0, τ_c), with analysis of an existing experiment and extension to qutrits.
A quantum channel A is physically harder to implement than channel B if A's output statistics allow unique identification of the input state from B's output via some measurement, which is equivalent to obtaining A from B by post-composition with an HPTP map.
citing papers explorer
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Efficient simulation of noisy IQP circuits with amplitude-damping noise
A classical polynomial-time sampler exists for the output distribution of amplitude-damped IQP circuits with logarithmic depth and arbitrary l-local diagonal gates.
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Absolute Schmidt number: characterization, detection and resource-theoretic quantification
Introduces absolute Schmidt number for states invariant under global unitaries, with witness and moment-based detection methods plus resource measures, extended to covariant channels.
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Scaling Laws of Quantum Information Lifetime in Monitored Quantum Dynamics
Quantum information lifetime scales exponentially with system size under continuous monitoring via mid-circuit measurements, proven analytically for Haar random unitaries and confirmed numerically and experimentally, unlike the linear scaling without monitoring.
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Contextuality in anomalous heat flow
Anomalous heat flow occurs in quantum prepare-transform-measure protocols only when noncontextuality inequalities are violated, for evolution times in (0, τ_c), with analysis of an existing experiment and extension to qutrits.
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Comparing quantum channels using Hermitian-preserving trace-preserving linear maps: A physically meaningful approach
A quantum channel A is physically harder to implement than channel B if A's output statistics allow unique identification of the input state from B's output via some measurement, which is equivalent to obtaining A from B by post-composition with an HPTP map.