Active engineering of four-wave mixing spectral correlations in multiband hollow-core fibers

Cordier, Martin; Orieux, Adeline; Debord, Benoît; Gérôme, F.; Gorse, Alexandre; Chafer, Matthieu; Diamanti, Eleni; Delaye, Philippe; Benabid, Fetah; Zaquine, Isabelle

doi:10.1364/oe.27.009803

Cited by 23 publications

(21 citation statements)

References 43 publications

(40 reference statements)

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“…Finally, the fiber dispersion has been designed such that the phase-matching configuration gives a signal at 760-800 nm wavelength range, which is compatible with Rubidium or Cesium absorption spectral locations, and lies in the range of Silicon single photon detector, and an idler at telecom wavelength (See Supplementary note 1.d). Moreover, as previously demonstrated 42 , such IC-HCPCF allows to engineer the spectral correlations.…”

Section: Resultsmentioning

confidence: 72%

“…This allows, when using the signal photon to herald the idler, to obtain a telecom wavelength single photon with high state purity. Figure 1.b illustrates the source tunability by showing the measured signal and idler wavelengths when the gas pressure is varied from 2 to 5 bar 42 . The results show that within this short pressure range, the idler covers both S-C and L telecom band, when the fiber is pumped with laser set at 1033 nm.…”

Section: Resultsmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Raman-free fibered photon-pair source

Cordier

Delaye

Gérôme

et al. 2020

Sci Rep

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“…Here, promising progress in developing photonic devices that enable tuning photon pair phase-matched frequencies was demonstrated using photonic chip [144]. Within this context, recent results exploiting the gas-filled IC-HCPCF's dispersion spectral profile and its strong nonlinearity show that IC-HCPCF is an excellent platform to both generate and engineer spectrally-entangled photon pairs [145][146][147].…”

Section: Quantum Informationmentioning

confidence: 99%

“…The possibility is offered in such IC gas-filled fibers to position the pump, signal and idler photons in different transmission bands (as shown in Figure 31b). Several JSIs have been produced with different degrees of photons entanglement, and with an active control on the JSI by playing on gas pressure change [147]. In the results presented in Figure 31, the fiber exhibits strut thickness of 600 nm, core radius of 20 µm.…”

Section: Quantum Informationmentioning

confidence: 99%

Hollow-Core Fiber Technology: The Rising of “Gas Photonics”

Debord

Amrani

Vincetti

et al. 2019

Fibers

155

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Since their inception, about 20 years ago, hollow-core photonic crystal fiber and its gas-filled form are now establishing themselves both as a platform in advancing our knowledge on how light is confined and guided in microstructured dielectric optical waveguides, and a remarkable enabler in a large and diverse range of fields. The latter spans from nonlinear and coherent optics, atom optics and laser metrology, quantum information to high optical field physics and plasma physics. Here, we give a historical account of the major seminal works, we review the physics principles underlying the different optical guidance mechanisms that have emerged and how they have been used as design tools to set the current state-of-the-art in the transmission performance of such fibers. In a second part of this review, we give a nonexhaustive, yet representative, list of the different applications where gas-filled hollow-core photonic crystal fiber played a transformative role, and how the achieved results are leading to the emergence of a new field, which could be coined “Gas photonics”. We particularly stress on the synergetic interplay between glass, gas, and light in founding this new fiber science and technology.

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“…A tunable source of bright squeezed-vacuum twin beams based on a FWM process (modulational instabillity) has been demonstrated in hollow-core fibers [14]. For such a source, tunability of the number of modes has been demonstrated [15] and proposed for further use in a tunable biphoton source [16].…”

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confidence: 99%

Broadly tunable photon-pair generation in a suspended-core fiber

Hammer

Chekhova

Häupl

et al. 2020

Phys. Rev. Research

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Nowadays fiber biphoton sources are nearly as popular as crystal-based ones. They offer a single spatial mode and easy integrability into optical networks. However, fiber sources lack the broad tunability of crystals, which do not require a tunable pump. Here, we report a broadly tunable biphoton source based on a suspended core fiber. This is achieved by introducing pressurized gas into the fibers hollow channels, changing the step index. The mechanism circumvents the need for a tunable pump laser, making this a broadly tunable fiber biphoton source with a convenient tuning mechanism, comparable to crystals. We report a continuous shift of 0.30 THz/bar of the sidebands, using up to 25 bar of argon.Optical fibers are an ideal platform for the generation of entangled photon pairs (biphotons) via spontaneous four-wave-mixing (FWM), due to their long light-matter interaction length. In particular, solid core fibers offer high effective nonlinearity. However, they typically lack the convenient tuning mechanism present in crystal-based biphoton sources, beside the trivial but costly scheme of tuning the pump wavelength. A limited amount of tuning has been demonstrated by stretching and heating the fiber [1], however, these approaches are limited by fiber damage. Meanwhile, gas filled hollow-core fibers offer broad dispersion tuning, but implementing a biphoton source in these fibers remains a challenging task, due to their low nonlinearity. Here, we combine the high nonlinearity of a solid core fiber with the convenient tuning scheme offered by gas filled fibers, to implement a tunable source of entangled photons. This is achieved by filling the channels surrounding the core of a suspended-core fiber (SCF). SCFs are a class of index-guiding microstructured fibers, where light is guided in a glass core suspended by three glass nano-membranes. SCFs have been used in a variety of applications, ranging from supercontinuum generation [2] to gas absorption spectroscopy [3], or chemical sensing [4].In FWM, two photons of an incident beam (denoted pump) are annihilated and the energy is transferred to two daughter photons (denoted signal and idler) symmetrically spaced around the pump. The signal and idler frequencies ω S , ω I are determined by the * jonas.hammer@mpl.mpg.de

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Active engineering of four-wave mixing spectral correlations in multiband hollow-core fibers

Cited by 23 publications

References 43 publications

Raman-free fibered photon-pair source

Raman-free fibered photon-pair source

Hollow-Core Fiber Technology: The Rising of “Gas Photonics”

Broadly tunable photon-pair generation in a suspended-core fiber

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