Fidelity Decay Saturation Level for Initial Eigenstates

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dc.creatorWeinstein, Yaakov S.
dc.creatorEmerson, Joseph V.
dc.creatorLloyd, Seth
dc.creatorCory, David G.
dc.date2002-10-09
dc.date.accessioned2026-07-07T06:24:01Z
dc.date.available2026-07-07T06:24:01Z
dc.descriptionWe show that the fidelity decay between an initial eigenstate state evolved under a unitary chaotic operator and the same eigenstate evolved under a perturbed operator saturates well before the 1/N limit, where $N$ is the size of the Hilbert space, expected for a generic initial state. We provide a theoretical argument and numerical evidence that, for intermediate perturbation strengths, the saturation level depends quadratically on the perturbation strength.
dc.description3 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0210063
dc.identifierhttp://arxiv.org/abs/quant-ph/0210063
dc.identifierQuantum Information Processing 1, 439 (2003).
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96405
dc.subjectQuantum Physics
dc.titleFidelity Decay Saturation Level for Initial Eigenstates
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