Entanglement Echoes in Quantum Computation

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dc.creatorRossini, Davide
dc.creatorBenenti, Giuliano
dc.creatorCasati, Giulio
dc.date2003-09-19
dc.date.accessioned2026-07-07T06:07:52Z
dc.date.available2026-07-07T06:07:52Z
dc.descriptionWe study the stability of entanglement in a quantum computer implementing an efficient quantum algorithm, which simulates a quantum chaotic dynamics. For this purpose, we perform a forward-backward evolution of an initial state in which two qubits are in a maximally entangled Bell state. If the dynamics is reversed after an evolution time $t_r$, there is an echo of the entanglement between these two qubits at time $t_e=2t_r$. Perturbations attenuate the pairwise entanglement echo and generate entanglement between these two qubits and the other qubits of the quantum computer.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0309146
dc.identifierhttp://arxiv.org/abs/quant-ph/0309146
dc.identifierPhys. Rev. A 69, 052317 (2004)
dc.identifierdoi:10.1103/PhysRevA.69.052317
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91448
dc.subjectQuantum Physics
dc.subjectCondensed Matter
dc.subjectChaotic Dynamics
dc.titleEntanglement Echoes in Quantum Computation
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