NOON states from cavity-enhanced down-conversion: High quality and super-resolution
arXiv:0911.5308 · doi:10.1364/JOSAB.27.000A25
Abstract
Indistinguishable photons play a key role in quantum optical information technologies. We characterize the output of an ultra-bright photon-pair source using multi-particle tomography [R. B. A. Adamson et al., Phys. Rev. Lett. 98, 043601 (2007)] and separately identify coherent errors, decoherence, and distinguishability. We demonstrate generation of high-quality indistinguishable pairs and polarization NOON states with 99% fidelity to an ideal NOON state. Using a NOON state we perform a super-resolving angular measurement with 90% visibility.
4 Pages, 5 figures
References in corpus (4)
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- Bright filter-free source of indistinguishable photon pairs
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- Theory of high gain cavity-enhanced spontaneous parametric down-conversion
- Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime
- Generation of NOON states in waveguide arrays
- Quantum Estimation of the Stokes Vector Rotation for a General Polarimetric Transformation
- Overcomplete quantum tomography of a path-entangled two-photon state
- NOON states in trapped ions
- Cold-atom comagnetometry via optical control of spin states