2006/12/31 by Anne E. B. Nielsen, Klaus Mølmer, Klaus Molmer · 1 citation
Computer Science · Engineering · Physics and Astronomy · #Photonic and Optical Devices #Quantum Information and Cryptography #Quantum optics and atomic interactions #quant-ph
paper · pdf · doi:10.1103/physreva.75.043801
published as Phys. Rev. A 75, 043801 (2007) · 8 pages, 7 figures, v2: shortened version
openalex publication_date 2007/04/02 · arxiv created 2007/04/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Conditional preparation of photon number states from a continuous-wave nondegenerate optical parametric oscillator is investigated. We derive the phase space Wigner function for the output state conditioned on photodetection events that are not necessarily simultaneous, and we maximize its overlap with the desired photon number state by choosing the optimal temporal output state mode function. We present a detailed numerical analysis for the case of two-photon state generation from a parametric oscillator driven with an arbitrary intensity below threshold, and in the low-intensity limit we present a formalism that yields the optimal output state mode function and fidelity for higher-photon-number states.