Double-heralded generation of two-photon-states by spontaneous four-wave-mixing in the presence of noise

Smith, Roger A.; Reddy, Dileep V.; Vitullo, Dashiell L. P.; Raymer, Michael G.

doi:10.1364/oe.24.005809

Cited by 11 publications

(9 citation statements)

References 33 publications

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“…the probability that an idler photon is present given the detection of its twin, is also a very important characteristic of the heralded photon source. We measure a value of η herald ≈ 27% which is comparable with other reported fiber sources 10,12,48 .…”

Section: Signalsupporting

confidence: 85%

Raman-free fibered photon-pair source

Cordier

Delaye

Gérôme

et al. 2020

Sci Rep

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Raman-scattering noise in silica has been the key obstacle toward the realisation of high quality fiber-based photon-pair sources. Here, we experimentally demonstrate how to get past this limitation by dispersion tailoring a xenon-filled hollow-core photonic crystal fiber. The source operates at room temperature, and is designed to generate Raman-free photon-pairs at useful wavelength ranges, with idler at the telecom, and signal at a visible range. We achieve a coincidence-to-accidentals ratio as high as 2740 combined with an ultra low heralded gH (0) = 0.002, indicating a very high signal to noise ratio and a negligible multi-photon emission probability. Moreover, by gas-pressure tuning, we demonstrate the control of photon frequencies over a range as large as 13 THz, covering S-C and L telecom band for the idler photon. This work demonstrates that hollow-core photonic crystal fiber is an excellent platform to design high quality photon-pair sources, and could play a driving role in the emerging quantum technology.Among the numerous platforms that have been tested in quantum information, χ (2) nonlinear media and, in particular, bulk crystals have been historically the workhorse for photon-pair generation due to the relative ease in terms of experimental setup, their cost and their availability 1 . Four-wave mixing mechanism in χ (3) media, and in particular waveguides and optical fibers have gained much attention in the recent years because of the new prospects they offer in terms of scalability and integrability. For instance, more than 550 silicon-based photonic components have been recently integrated on a single silicon chip, including 16 identical four-wave mixing photon-pair sources 2 . Alternatively, fiber-based photon-pair sources have many advantages; they are easily manufacturable, cost effective, robust, alignment-free and compatible with fiber optical network since the photon-pairs are directly emitted in the fundamental transverse guided mode of a fiber. Furthermore, and unlike silicon-based materials, optical fibers don't suffer from two-photon absorption or free carriers effect 3 , and a dispersion that can be readily engineered.Within the fiber-related endeavors, photon-pairs have been produced in many different architectures encompassing singlemode fiber 4, 5 , dispersion-shifted fiber 6-9 , birefringent single-mode fiber 10, 11 , micro/nano-fiber 12, 13 and photonic crystal fiber (PCF) [14][15][16][17][18][19][20] . However, the performances of these photon-pair sources are most often plagued by a concomitant nonlinear effect, Raman-scattering (RS). Indeed, in addition to the four-wave mixing process leading to photon-pair generation, an interaction between the pump and phonons in the medium results in the generation of scattered photons. Due to the amorphous nature of silica (i.e. the fiber core material), the Raman gain is broadband and continuous 21 , thus generating a large amount of scattered photons around the pump frequency. In fact, regardless of the photon-pair frequencies, some Rama...

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Section: Signalsupporting

confidence: 85%

Raman-free fibered photon-pair source

Cordier

Delaye

Gérôme

et al. 2020

Sci Rep

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“…Photon pair generation has been reported in singlemode [8], dispersion-shifted [9][10][11], birefringent [12][13][14][15], and micro-structured optical fibers [16][17][18][19][20][21]. There has been a recent surge of interest in nonlinear optics of multimode fibers because of their rich nonlinear and dispersive properties [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Photon pair generation in multimode optical fibers via intermodal phase matching

Pourbeyram

Mafi

2016

Phys. Rev. A

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We present a detailed study of photon-pair generation in a multimode optical fiber via nonlinear four-wave mixing and intermodal phase-matching. We show that in multimode optical fibers, it is possible to generate correlated photon pairs in different fiber modes with large spectral shifts from the pump wavelength, such that the photon pairs are immune to contamination from spontaneous Raman scattering and residual pump photons. We also show that it is possible to generate factorable two-photon states exhibiting minimal spectral correlations between the photon pair components in conventional multimode fibers using commonly available pump lasers. It is also possible to simultaneously generate multiple factorable states from different FWM processes in the same fiber and over a wide range of visible spectrum by varying the pump wavelength without affecting the factorability of the states. Therefore, photon-pair generation in multimode optical fibers exhibits considerable potential for producing state engineered photons for quantum communications and quantum information processing applications.

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“…4, which estimates the error of 10 %. The error in the data may result from the false triple coincidences from the leakage of the pump photons or measurement-induced disturbance [26]. The occurrence of false triple coincidences from the leakage of the pump photons is inevitable.…”

Section: Photon Antibunchingmentioning

confidence: 99%

InP membrane micro-ring resonator for generating heralded single photons

Kumar¹,

Raevskaia²,

Pogoretskii³

et al. 2019

J. Opt.

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Double-heralded generation of two-photon-states by spontaneous four-wave-mixing in the presence of noise

Cited by 11 publications

References 33 publications

Raman-free fibered photon-pair source

Raman-free fibered photon-pair source

Photon pair generation in multimode optical fibers via intermodal phase matching

InP membrane micro-ring resonator for generating heralded single photons

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