Reply to "Comment on 'Measuring a Photonic Qubit without Destroying It'"

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dc.creatorPryde, G. J.
dc.creatorO'Brien, J. L.
dc.creatorWhite, A. G.
dc.creatorBartlett, S. D.
dc.creatorRalph, T. C.
dc.date2005-07-19
dc.date.accessioned2026-07-07T11:40:46Z
dc.date.available2026-07-07T11:40:46Z
dc.descriptionIn our Letter we proposed a scheme for nondeterministic quantum nondemolition (QND) measurement of the polarization of a single photon--a photonic qubit--using linear optics and photodetection. The scheme works with nonunit probability, but success is heralded by the detection of a single photon in the meter output. We provided an experimental demonstration of this scheme and introduced three universally applicable fidelity measures--the measurement fidelity F_M, the quantum state preparation fidelity F_QSP, and the QND fidelity F_QND--to quantify its performance. The claim of Kok and Munro in their Comment [quant-ph/0406120] is that one of our fidelity measures F_M is not appropriate because it relies on coincidence measurements. We show why this claim is wrong from both a fundamental and an operational perspective.
dc.description1 page, no figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0507175
dc.identifierhttp://arxiv.org/abs/quant-ph/0507175
dc.identifierPhys.Rev.Lett.95:048902,2005
dc.identifierdoi:10.1103/PhysRevLett.95.048902
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200357
dc.subjectQuantum Physics
dc.titleReply to "Comment on 'Measuring a Photonic Qubit without Destroying It'"
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