Quantum superpositions and entanglement of thermal states at high temperatures and their applications to quantum information processing

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dc.creatorJeong, Hyunseok
dc.creatorRalph, Timothy C.
dc.date2007-04-04
dc.date2007-07-23
dc.date.accessioned2026-07-07T08:33:25Z
dc.date.available2026-07-07T08:33:25Z
dc.descriptionWe study characteristics of superpositions and entanglement of thermal states at high temperatures and discuss their applications to quantum information processing. We introduce thermal-state qubits and thermal-Bell states, which are a generalization of pure-state qubits and Bell states to thermal mixtures. A scheme is then presented to discriminate between the four thermal-Bell states without photon number resolving detection but with Kerr nonlinear interactions and two single-photon detectors. This enables one to perform quantum teleportation and gate operations for quantum computation with thermal-state qubits.
dc.description12 pages, 11 figures, minor corrections, to be published in Phys. Rev. A
dc.identifierhttps://arxiv.org/abs/0704.0523
dc.identifierhttp://arxiv.org/abs/0704.0523
dc.identifierPhys. Rev. A 76, 042103 (2007)
dc.identifierdoi:10.1103/PhysRevA.76.042103
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/139122
dc.subjectQuantum Physics
dc.titleQuantum superpositions and entanglement of thermal states at high temperatures and their applications to quantum information processing
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