Deterministic entanglement and tomography of ion spin qubits

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dc.creatorHome, J. P.
dc.creatorMcDonnell, M. J.
dc.creatorLucas, D. M.
dc.creatorImreh, G.
dc.creatorKeitch, B. C.
dc.creatorSzwer, D. J.
dc.creatorThomas, N. R.
dc.creatorWebster, S. C.
dc.creatorStacey, D. N.
dc.creatorSteane, A. M.
dc.date2006-03-30
dc.date2006-03-31
dc.date.accessioned2026-07-07T07:08:10Z
dc.date.available2026-07-07T07:08:10Z
dc.descriptionWe have implemented a universal quantum logic gate between qubits stored in the spin state of a pair of trapped calcium 40 ions. An initial product state was driven to a maximally entangled state deterministically, with 83% fidelity. We present a general approach to quantum state tomography which achieves good robustness to experimental noise and drift, and use it to measure the spin state of the ions. We find the entanglement of formation is 0.54.
dc.description3 figures, 4 pages, footnotes fixed
dc.identifierhttps://arxiv.org/abs/quant-ph/0603273
dc.identifierhttp://arxiv.org/abs/quant-ph/0603273
dc.identifierNew J. Phys. 8 (2006) 188.
dc.identifierdoi:10.1088/1367-2630/8/9/188
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110654
dc.subjectQuantum Physics
dc.titleDeterministic entanglement and tomography of ion spin qubits
dc.typetext

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