Optical mode characterization of single photons prepared via conditional measurements on a biphoton state

Details Optical mode characterization of single photons prepared via conditional measurements on a biphoton state Optical mode characterization of single photons prepared via conditional measurements on a biphoton state

2001-07-16

arxiv.org/abs/quant-ph/0107080v1

European Physical Journal D 18, 237 (2002)

Physics

Quantum Physics

submitted to the special issue of the European Physical Journal D "Quantum interference and cryptographic keys: novel physics

Scientific paper

10.1140/epjd/e20020028

A detailed theoretical analysis of the spatiotemporal mode of a single photon prepared via conditional measurements on a photon pair generated in the process of parametric down-conversion is presented. The maximum efficiency of coupling the photon into a transform-limited classical optical mode is calculated and ways for its optimization are determined. An experimentally feasible technique of generating the optimally matching classical mode is proposed. The theory is applied to a recent experiment on pulsed homodyne tomography of the single-photon Fock state (A. I. Lvovsky et al., Phys Rev. Lett. 87, 050402 (2001) - preprint at quant-ph/0101051)

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