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arxiv: quant-ph/0406120 · v1 · submitted 2004-06-17 · 🪐 quant-ph

Comment on: "Measuring a Photonic Qubit without Destroying It"

classification 🪐 quant-ph
keywords arguecommentdemonstrationdestroyingexperimentfidelityhereinconsistent
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Recently, Pryde et al reported the demonstration of a quantum non-demolition scheme for single-photon polarization states with linear optics and projective measurements [Phys. Rev. Lett. 92, 190402 (2004)]. Here, we argue that their interpretation of the experiment is inconsistent with the fidelity measure they use.

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