Reply to "Comment on 'Measuring a Photonic Qubit without Destroying It'"
Abstract
In 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.
Cite
@article{arxiv.quant-ph/0507175,
title = {Reply to "Comment on 'Measuring a Photonic Qubit without Destroying It'"},
author = {G. J. Pryde and J. L. O'Brien and A. G. White and S. D. Bartlett and T. C. Ralph},
journal= {arXiv preprint arXiv:quant-ph/0507175},
year = {2008}
}
Comments
1 page, no figures