Generation of two-color polarization-entangled optical beams with a self-phase-locked two-crystal Optical Parametric Oscillator

Laurat, Julien; Keller, G.; Fabre, Claude; Coudreau, Thomas

doi:10.1109/cleo.2006.4628942

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…One promising approach to generate such narrowband photon pairs is to use resonance enhancement of PDC within a cavity, also called optical parametric oscillator (OPO) far below the threshold [27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42]. PDC is enhanced at the resonances of the cavity but inhibited at non-resonant frequencies.…”

Section: Introductionmentioning

confidence: 99%

Direct generation of genuine single-longitudinal-mode narrowband photon pairs

et al. 2015

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The practical prospect of quantum communication and information processing relies on sophisticated single photon pairs which feature controllable waveform, narrow spectrum, excellent purity, fiber compatibility and miniaturized design. For practical realizations, stable, miniaturized, low-cost devices are required.Sources with one or some of above performances have been demonstrated already, but it is quite challenging to have a source with all of the described characteristics simultaneously. Here we report on an integrated singlelongitudinal-mode non-degenerate narrowband photon pair source, which exhibits all requirements needed for quantum applications. The device is composed of a periodically poled Ti-indiffused lithium niobate waveguide with high reflective dielectric mirror coatings deposited on the waveguide end-faces. Photon pairs with wavelengths around 890 nm and 1320 nm are generated via type II phasematched parametric down-conversion. Clustering in this dispersive cavity restricts the whole conversion spectrum to one single-longitudinal-mode in a single cluster yielding a narrow bandwidth of only 60 MHz. The high conversion efficiency in the waveguide, together with the spectral clustering in the doubly resonant waveguide, leads to a high brightness of 3 × 10 4 pairs/(s•mW•MHz). This source exhibits prominent single-longitudinal-mode purity and remarkable temporal shaping capability. Especially, due to temporal broadening, we can observe that the coherence time of the two-photon component of PDC state is actually longer than the one of the single photon states. The miniaturized monolithic design makes this source have various fiber communication applications.

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Section: Introductionmentioning

confidence: 99%

Direct generation of genuine single-longitudinal-mode narrowband photon pairs

et al. 2015

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Generation of two-color polarization-entangled optical beams with a self-phase-locked two-crystal Optical Parametric Oscillator

Laurat

Keller

Fabre

et al. 2006

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference

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A device to generate polarization-entangled light in the continuous-variable regime is introduced. It consists of an optical parametric oscillator with two type-II phase-matched nonlinear crystals orthogonally oriented, associated with birefringent elements for adjustable linear coupling. We give in this paper a theoretical study of its classical and quantum properties. It is shown that two optical beams with adjustable frequencies and well-defined polarization can be emitted. The Stokes parameters of the two beams are entangled. The principal advantage of this setup is the possibility to directly generate polarization-entangled light without the need of mixing four modes on beamsplitters as required in current experimental setups. This device opens up different directions for the study of light-matter interfaces and a generation of multimode nonclassical light and higher dimensional phase space.

show abstract

Generation of two-color polarization-entangled optical beams with a self-phase-locked two-crystal Optical Parametric Oscillator

Cited by 2 publications

References 37 publications

Direct generation of genuine single-longitudinal-mode narrowband photon pairs

Direct generation of genuine single-longitudinal-mode narrowband photon pairs

Generation of two-color polarization-entangled optical beams with a self-phase-locked two-crystal Optical Parametric Oscillator

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