Optical parametric oscillator far below threshold: Experiment versus theory

Lu, Yao; Ou, Z. Y.

doi:10.1103/physreva.62.033804

Cited by 85 publications

(93 citation statements)

References 32 publications

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“…OPO sources operating below threshold produce photons in the allowed cavity modes and their bandwidths can be tuned by changing the length and cavity mirror reflectivities [13,19,15]. In addition, the brightness of this kind of source is enhanced compared to the crystal without a cavity [20,21,13]. However, selecting the desired photon pairs usually requires additional filtering to obtain only the desired cavity modes -OPO sources typically produce a frequency comb of many frequencies spaced according to the free spectral range (FSR) of the cavity.…”

Section: Introductionmentioning

confidence: 99%

Narrowband photon pair source for quantum networks

Monteiro¹,

Martin²,

Sanguinetti³

et al. 2014

Opt. Express

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Abstract:We demonstrate a compact photon pair source based on a periodically poled lithium niobate nonlinear crystal in a cavity. The cavity parameters are chosen such that the emitted photon pair modes can be matched in the region of telecom ultra dense wavelength division multiplexing (U-DWDM) channel spacings. This approach provides efficient, low-loss, mode selection that is compatible with standard telecommunication networks. Photons with a coherence time of 8.6 ns (116 MHz) are produced and their purity is demonstrated. A source brightness of 134 pairs (s. mW. MHz) −1 is reported. The high level of purity and compatibility with standard telecom networks is of great importance for complex quantum communication networks.

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Section: Introductionmentioning

confidence: 99%

Narrowband photon pair source for quantum networks

Monteiro¹,

Martin²,

Sanguinetti³

et al. 2014

Opt. Express

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“…Compared with the about 40 nm spectrum at FWHM of the single photon generated in a single pass SPDC configuration [9], the bandwidth of the single photon is reduced significantly. Following the treatment given by Ou [49], we now do a raw estimation on the coherence length of the single photon. In our experiment, a type-I phase matched down-converter is used.…”

Section: Experiments Measuring the Coherence Length Of The Single Multmentioning

confidence: 99%

Preparation of narrow-band photons for atomic-based quantum memory with a type-I phase matched periodical poled KTP crystal

et al. 2010

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Transferring a quantum state between a photon and a quantum memory is the key point for realizing a long-distance quantum communication, and is also a basic ingredient of linear optical quantum computation. In an atomic-based network, the efficient coupling between a photon and an atomic system is a prerequisite for realizing the transfer of information between them, which requires that the photon should have a comparable bandwidth with the natural bandwidth of an atom. Therefore, generating a narrow-band photon has become a very important topic in the quantum information field. One simple and efficient way is cavity-enhanced spontaneously parametric down-conversion. In this paper, we will review and introduce a series of experiments done in our group for realizing this goal. We believe these works are very useful for the research in this direction.

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“…In general, the reflected mode of the optical HPF can be written in the frequency domain as [18] a r (ω 0 + ω) = (κ 1 − κ 2 )/2 + iω (κ 1 + κ 2 )/2 − iωâ in (ω 0 + ω)…”

Section: Appendix: the Effect Of Impedance Mismatchmentioning

confidence: 99%

“…The cavity has bandwidth κ which transmits photons in the low-frequencies and reflects the rest of the components towards the APD. The inputoutput relation of this cavity can be given in the frequency domain by [18] …”

Section: Scheme Of Mode-filteringmentioning

confidence: 99%

Quantum mode filtering of non-Gaussian states for teleportation-based quantum information processing

et al. 2012

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We propose and demonstrate an effective mode-filtering technique of non-Gaussian states generated by photon-subtraction. More robust non-Gaussian states have been obtained by removing noisy low frequencies from the original mode spectrum. We show that non-Gaussian states preserve their non-classicality after quantum teleportation to a higher degree, when they have been modefiltered. This is indicated by a stronger negativity −0.033 ± 0.005 of the Wigner function at the origin, compared to −0.018 ± 0.007 for states that have not been mode-filtered. This technique can be straightforwardly applied to various kinds of photon-subtraction protocols, and can be a key ingredient in a variety of applications of non-Gaussian states, especially teleportation-based protocols towards universal quantum information processing.

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Optical parametric oscillator far below threshold: Experiment versus theory

Cited by 85 publications

References 32 publications

Narrowband photon pair source for quantum networks

Narrowband photon pair source for quantum networks

Preparation of narrow-band photons for atomic-based quantum memory with a type-I phase matched periodical poled KTP crystal

Quantum mode filtering of non-Gaussian states for teleportation-based quantum information processing

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