Highly efficient generation of single-mode photon pairs from a crystalline whispering-gallery-mode resonator source

Förtsch, Michael; Schunk, Gerhard; Fürst, Josef; Strekalov, Dmitry; Gerrits, Thomas; Stevens, Martin J.; Sedlmeir, Florian; Schwefel, Harald G. L.; Nam, Sae Woo; Leuchs, Gerd; Marquardt, Christoph

doi:10.1103/physreva.91.023812

Cited by 52 publications

(56 citation statements)

References 42 publications

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“…However, the loose phase-matching condition for both bulk and waveguide sources usually leads to a continuous broad bandwidth, typically exceeding several 100 GHz and a mixed state in frequency. To overcome this bottlneck, narrowband photonpair sources are desired with an adapted bandwidth and a high spectral brightness.One promising approach to generate such narrowband photon pairs is to use resonance enhancement of PDC within a cavity, also called an optical parametric oscillator (OPO), far below the threshold [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]. PDC is enhanced at the resonances of the cavity but inhibited at non-resonant frequencies.…”

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confidence: 99%

“…Despite enormous progress-nondegenerate photon pairs with linewidths of about 2 MHz oscillating on four longitudinal modes-which was obtained in the bulk cavity [41], most of the bulk sources suffer from low pair-production efficiency, degenerate frequency, bad mode selectivity, and complicated cavity-locking techniques.To overcome these limitations, strong benefits from a monolithic implementation of this scheme can be expected. Recently a high-Q cavity using a whispering gallery mode resonator has been demonstrated to achieve single-mode photon pairs [42]. An alternative approach using a periodically poled lithium niobate (PPLN) waveguide with dielectric mirrors deposited on its end-faces has been demonstrated to generate nearly degenerate photon-pairs via a type I phase-matched PDC process in the telecom region [36].…”

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confidence: 99%

“…To overcome these limitations, strong benefits from a monolithic implementation of this scheme can be expected. Recently a high-Q cavity using a whispering gallery mode resonator has been demonstrated to achieve single-mode photon pairs [42]. An alternative approach using a periodically poled lithium niobate (PPLN) waveguide with dielectric mirrors deposited on its end-faces has been demonstrated to generate nearly degenerate photon-pairs via a type I phase-matched PDC process in the telecom region [36].…”

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confidence: 99%

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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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confidence: 99%

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confidence: 99%

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

et al. 2015

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“…We showed both theoretically and experimentally that simultaneous critical coupling of signal and pump modes allows for increased second harmonic efficiency; because of selective coupling, we were able to increase this fifteenfold. These individually accessible coupling rates will be particularly interesting for applications studying the quantum aspects of nonlinearly generated light in WGMs [21][22][23][24]. These results also apply to z-cut resonators, when an x-cut prism is used.…”

Section: Discussionmentioning

confidence: 78%

Selective Coupling Enhances Harmonic Generation of Whispering-Gallery Modes

et al. 2018

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We demonstrate second harmonic generation (SHG) in an x-cut congruent lithium niobate (LN) whispering gallery mode resonator. We first show theoretically that independent control of the coupling of the pump and signal modes is optimal for high conversion rates. A scheme based on our earlier work in Ref.[1] is then implemented experimentally to verify this. Thereby we are able to improve on the efficiency of SHG by more than an order of magnitude by selectively out-coupling using a LN prism, utilizing the birefringence of it and the resonator in kind. We report 5.28%/mW efficiency for SHG from 1555.4 nm to 777.7 nm.

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“…One of the mirrors of the signal cavity is not fixed and can act then as a mechanical oscillator forced by the radiation pressure exerted from the light contained in the cavity. OPOs based on dual semi-monolithic cavities [81] can implement this exact setup, but other platforms such as crystalline whispering gallery mode resonators [66][67][68][69][70][71][72][73][74][75][76][77][78] or superconducting circuits [27,44,59,79,80] are already at a point where the model analyzed in our work can be studied experimentally.…”

Section: Introductionmentioning

confidence: 99%

Classical and quantum-linearized descriptions of degenerate optomechanical parametric oscillators

et al. 2016

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Recent advances in the development of modern quantum technologies have opened the possibility of studying the interplay between spontaneous parametric down-conversion and optomechanics, two of the most fundamental nonlinear optical processes. Apart from practical reasons, such scenario is very interesting from a fundamental point of view, because it allows exploring the optomechanical interaction in the presence of a strongly quantum-correlated field, the spontaneously down-converted mode. In this work we analyze such problem from two approximate but valuable perspectives: the classical limit and the limit of small quantum fluctuations. We show that, in the presence of optomechanical coupling, the well-known classical phase diagram of the optical problem gets modified by the appearance of new dynamical instabilities. As for the quantum-mechanical description, we prove the ability of the squeezed down-converted field to cool down the mechanical motion not only to thermal but also to squeezed thermal mechanical states, and in a way that can be much less sensitive to parameters (e.g., detuning of the driving laser) than standard sideband cooling.

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Highly efficient generation of single-mode photon pairs from a crystalline whispering-gallery-mode resonator source

Cited by 52 publications

References 42 publications

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

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

Selective Coupling Enhances Harmonic Generation of Whispering-Gallery Modes

Classical and quantum-linearized descriptions of degenerate optomechanical parametric oscillators

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