Photonic crystal fibre-based source of heralded single photons with high mode purity and efficiency

Cui, Liang; Guo, Chunyu; Li, Xiaoying

doi:10.1080/09500340.2013.844865

Cited by 3 publications

(3 citation statements)

References 28 publications

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“…Since the first experimental demonstration [7] , heralded single photons based on spontaneous parametric down conversion in χ ð2Þ -based nonlinear media have been extensively investigated [8][9][10][11] . Recently, there are growing interests in realizing heralded single photons by using spontaneous four wave mixing (SFWM) in χ ð3Þ -based optical fibers [12][13][14][15][16][17][18][19] , because the fiber-based sources have the potential for being developed into an all-fiber compact source and have higher compatibility with current fiber networks.…”

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confidence: 99%

“…The SMF-and DSF-based single photon sources [13,14] , which rely on the signal and idler photon pairs in telecom O band and C band, respectively, are highly efficient and compatible with standard SMF, but they suffer from the noise that originates from spontaneous Raman scattering (RS). For the PCF-based sources, the contamination by RS can be eliminated by utilizing signal and idler photon pairs with large frequency difference [15,16] , and heralded single photons in a pure state can be achieved by properly designing and controlling the dispersion of PCFs [17,18] . However, in practice, splicing a PCF and a standard SMF together with low loss is still a tricky task, since the splicing loss depends on the mode field mismatch of the two fibers and a number of splicing parameters need to be customized for a particular PCF [20] .…”

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confidence: 99%

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Micro/nano-fiber-based source of heralded single photons at the telecom band

Cui

et al. 2018

Chin. Opt. Lett.

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We experimentally demonstrate a heralded single photon source at 1290 nm by exploiting the spontaneous four wave mixing in a taper-drawn micro/nano-fiber (MNF). Because the frequency detuning between the pump and heralded single photons is ∼58 THz, the contamination by Raman scattering is significantly reduced at room temperature. Since the MNF is naturally connected to standard single mode fibers via fiber tapers, the source would be compatible with the existing fiber networks. When the emission rate of heralded signal photons is about 4.6 kHz, the measured second-order intensity correlation function g ð2Þ ð0Þ is 0.017 AE 0.002, which is suppressed by a factor of more than 55, relative to the classical limit.

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confidence: 99%

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Micro/nano-fiber-based source of heralded single photons at the telecom band

Cui

et al. 2018

Chin. Opt. Lett.

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“…Most importantly, spontaneous Raman scattering can populate the target frequencies with uncorrelated photons, particularly on the long-wavelength side of the pump [8]. The impact of Raman noise can be mitigated to some extent by using dispersion-engineering to place the idler photons beyond the majority of the Raman gain [9][10][11] or by cooling the fibre cryogenically [12]. In addition, correlation between the signal and idler modes can be used to gate desired events, either electronically through post-selecting coincident detection signals [13], or optically by feed-forward from the heralding detection to a fast optical switch [14].…”

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confidence: 99%

Fibre-integrated noise gating of high-purity heralded single photons

Francis-Jones

Mosley

2017

J. Opt.

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We present an all-fibre source of high-purity heralded single photons with an integrated conditional optical gate that reduces uncorrelated noise by almost an order of magnitude. Generating photon pairs by four-wave mixing in photonic crystal fibre, we observe with the noise gate active a factor of 7 reduction in the rate of single counts in the heralded channel with no measurable drop in coincidence count rate. In contrast to electronic post-selection of coincidence events, the real reduction in the flux of unwanted photons is beneficial for example to avoid bleaching light-sensitive samples or in generating entangled states.

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Microstructured optical fibers for quantum applications: Perspective

McGarry,

Harrington,

Davis

et al. 2024

APL Quantum

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Recent progress in the development and applications of microstructured optical fibers for quantum technologies is summarized. The optical nonlinearity of solid-core and gas-filled hollow-core fibers provides a valuable medium for the generation of quantum resource states as well as for quantum frequency conversion between the operating wavelengths of existing quantum photonic material architectures. The low loss, low latency, and low dispersion of hollow-core fibers make these fibers particularly attractive for both short- and long-distance links in quantum networks. Hollow-core fibers also promise to replace free-space optical components in a wide range of atomic experiments.

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Photonic crystal fibre-based source of heralded single photons with high mode purity and efficiency

Cited by 3 publications

References 28 publications

Micro/nano-fiber-based source of heralded single photons at the telecom band

Micro/nano-fiber-based source of heralded single photons at the telecom band

Fibre-integrated noise gating of high-purity heralded single photons

Microstructured optical fibers for quantum applications: Perspective

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