Stimulated and spontaneous four-wave mixing in silicon-on-insulator coupled photonic wire nano-cavities

Azzini, Stefano; Grassani, Davide; Galli, Mattéo; Gerace, Dario; Patrini, M.; Liscidini, Marco; Velha, Philippe; Bajoni, Daniele

doi:10.1063/1.4812640

Cited by 71 publications

(58 citation statements)

References 31 publications

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“…Nanobeams for four wave mixing [38], terahertz frequency generation [39] and broadband frequency conversion of single photons [12] have been proposed. Four wave mixing in coupled nanobeam cavities has been demonstrated [40], while the TE/TM nanobeam cavities proposed for broadband frequency conversion of single photons have been fabricated in silicon [11,41], but have yet to be implemented in high χ (2) materials. Crossed nanobeam PCCs [8,9] offer another method for increasing the frequency separation of the resonances, as the ability to individually select their wavelengths is significantly improved and the thickness of the wafer is less critical; however such cavities work well only when the frequency separation of the nanobeams is not too large.…”

Section: Introductionmentioning

confidence: 99%

Multimode nanobeam cavities for nonlinear optics: high quality resonances separated by an octave

Buckley¹,

Radulaski²,

Zhang³

et al. 2014

Opt. Express

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Section: Introductionmentioning

confidence: 99%

Multimode nanobeam cavities for nonlinear optics: high quality resonances separated by an octave

Buckley¹,

Radulaski²,

Zhang³

et al. 2014

Opt. Express

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“…Our approach can be easily applied to a wide range of resonant structures besides thirdorder nonlinear micro-ring resonators, e.g. photonic crystal waveguides [37] and resonators [38], micro-disks [39], coupled resonator optical waveguides (CROWs) [40], and secondorder nonlinear micro-cavities [41]. The bandwidth-matched excitation also gives access to higher-power pumping regimes, useful for, e.g., multi-photon state generation [12].…”

Section: Resultsmentioning

confidence: 99%

Practical system for the generation of pulsed quantum frequency combs

et al. 2017

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Abstract:The on-chip generation of large and complex optical quantum states will enable low-cost and accessible advances for quantum technologies, such as secure communications and quantum computation. Integrated frequency combs are on-chip light sources with a broad spectrum of evenly-spaced frequency modes, commonly generated by four-wave mixing in optically-excited nonlinear micro-cavities, whose recent use for quantum state generation has provided a solution for scalable and multi-mode quantum light sources. Pulsed quantum frequency combs are of particular interest, since they allow the generation of singlefrequency-mode photons, required for scaling state complexity towards, e.g., multi-photon states, and for quantum information applications. However, generation schemes for such pulsed combs have, to date, relied on micro-cavity excitation via lasers external to the sources, being neither versatile nor power-efficient, and impractical for scalable realizations of quantum technologies. Here, we introduce an actively-modulated, nested-cavity configuration that exploits the resonance pass-band characteristic of the micro-cavity to enable a mode-locked and energy-efficient excitation. We demonstrate that the scheme allows the generation of high-purity photons at large coincidence-to-accidental ratios (CAR). Furthermore, by increasing the repetition rate of the excitation field via harmonic modelocking (i.e. driving the cavity modulation at harmonics of the fundamental repetition rate), we managed to increase the pair production rates (i.e. source efficiency), while maintaining a high CAR and photon purity. Our approach represents a significant step towards the realization of fully on-chip, stable, and versatile sources of pulsed quantum frequency combs, crucial for the development of accessible quantum technologies.

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“…Demonstrations of structures that enhance photon generation rates via SFWM include rectangular waveguides [50,[77][78][79], and microring resonators [38,41,43,[80][81][82][83][84][85][86][87][88]; see Figure 5D-F. As SFWM involves the annihilation of two photons, pair generation rates scale with the square of the optical intensity. With standard single-mode waveguide geometries of 500 nm by 220 nm, optical intensities in integrated structures are enhanced by the inverse of the effective mode area [70] with respect to bulk-silicon SFWM pair sources.…”

Section: Photonic Structuresmentioning

confidence: 99%

Large-scale quantum photonic circuits in silicon

et al. 2016

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Quantum information science offers inherently more powerful methods for communication, computation, and precision measurement that take advantage of quantum superposition and entanglement. In recent years, theoretical and experimental advances in quantum computing and simulation with photons have spurred great interest in developing large photonic entangled states that challenge today's classical computers. As experiments have increased in complexity, there has been an increasing need to transition bulk optics experiments to integrated photonics platforms to control more spatial modes with higher fidelity and phase stability. The silicon-on-insulator (SOI) nanophotonics platform offers new possibilities for quantum optics, including the integration of bright, nonclassical light sources, based on the large third-order nonlinearity (χ (3) ) of silicon, alongside quantum state manipulation circuits with thousands of optical elements, all on a single phase-stable chip. How large do these photonic systems need to be? Recent theoretical work on Boson Sampling suggests that even the problem of sampling from ~30 identical photons, having passed through an interferometer of hundreds of modes, becomes challenging for classical computers. While experiments of this size are still challenging, the SOI platform has the required component density to enable low-loss and programmable interferometers for manipulating hundreds of spatial modes.Here, we discuss the SOI nanophotonics platform for quantum photonic circuits with hundreds-to-thousands of optical elements and the associated challenges. We compare SOI to competing technologies in terms of requirements for quantum optical systems. We review recent results on large-scale quantum state evolution circuits and strategies for realizing high-fidelity heralded gates with imperfect, practical systems. Next, we review recent results on silicon photonics-based photonpair sources and device architectures, and we discuss a path towards large-scale source integration. Finally, we review monolithic integration strategies for single-photon detectors and their essential role in on-chip feed forward operations.

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Stimulated and spontaneous four-wave mixing in silicon-on-insulator coupled photonic wire nano-cavities

Cited by 71 publications

References 31 publications

Multimode nanobeam cavities for nonlinear optics: high quality resonances separated by an octave

Multimode nanobeam cavities for nonlinear optics: high quality resonances separated by an octave

Practical system for the generation of pulsed quantum frequency combs

Large-scale quantum photonic circuits in silicon

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