Quantized phase shifts and a dispersive universal quantum gate

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dc.creatorSchmidt-Kaler, F.
dc.creatorHaeffner, H.
dc.creatorGulde, S.
dc.creatorRiebe, M.
dc.creatorLancaster, G.
dc.creatorEschner, J.
dc.creatorBecher, C.
dc.creatorBlatt, R.
dc.date2003-07-29
dc.date.accessioned2026-07-07T06:07:28Z
dc.date.available2026-07-07T06:07:28Z
dc.descriptionA single 40Ca+ ion is trapped and laser cooled to its motional ground state. Laser radiation which couples off-resonantly to a motional sideband of the ion's S1/2 to D5/2 transition causes a phase shift proportional to the ion's motional quantum state |n>. As the phase shift is conditional upon the ion's motion, we are able to demonstrate a universal 2-qubit quantum gate operation where the electronic target state {S,D} is flipped depending on the motional qubit state |n>={|0>,|1>}. Finally, we discuss scaling properties of this universal quantum gate for linear ion crystals and present numerical simulations for the generation of a maximally entangled state of five ions.
dc.identifierhttps://arxiv.org/abs/quant-ph/0307211
dc.identifierhttp://arxiv.org/abs/quant-ph/0307211
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91303
dc.subjectQuantum Physics
dc.titleQuantized phase shifts and a dispersive universal quantum gate
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