Mid-infrared quantum optics in silicon

Rosenfeld, Lawrence M.; Sulway, Dominic A.; Sinclair, Gary F.; Anant, Vikas; Thompson, Mark G.; Rarity, John G.; Silverstone, Joshua W.

doi:10.48550/arxiv.1906.10158

Cited by 3 publications

(4 citation statements)

References 52 publications

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“…Recently quantum interference was demonstrated in the mid-infrared in specially engineered silicon waveguides, showing the potential to banish TPA 2 (Fig. 3a) [170].…”

Section: Engineering Nonlinear Sourcesmentioning

confidence: 99%

Advances in silicon quantum photonics

Adcock,

Bao,

Chi

et al. 2022

Preprint

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Quantum technology is poised to enable a step change in human capability for computing, communications and sensing. Photons are indispensable as carriers of quantum information-they travel at the fastest possible speed and readily protected from decoherence. However, the system requires thousands of near-transparent components with ultra-low-latency control. For quantum technology to be implemented, a new paradigm photonic system is required: one with in-built coherence, stability, the ability to define arbitrary circuits, and a path to manufacturability. Silicon photonics has unparalleled density and component performance, which, with CMOS compatible fabrication, place it in a strong position for a scalable quantum photonics platform. This paper is a progress report on silicon quantum photonics, focused on developments in the past five years. We provide an introduction on silicon quantum photonic component and the challenges in the field, summarise the current state-of-the-art and identify outstanding technical challenges, as well as promising avenues of future research. We also resolve a conflict in the definition of Hong-Ou-Mandel interference visibility in integrated quantum photonic experiments, needed for fair comparison of photon quality across different platforms. Our aim is the development of scalability on the platform, to which end we point the way to ever-closer integration, toward silicon quantum photonic systems-on-a-chip.

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“…Recently quantum interference was demonstrated in the mid-infrared in specially engineered silicon waveguides, showing the potential to banish TPA 2 (Fig. 3a) [170].…”

Section: Engineering Nonlinear Sourcesmentioning

confidence: 99%

Advances in silicon quantum photonics

Adcock,

Bao,

Chi

et al. 2022

Preprint

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“…Solutions such as novel hollow-core photonic bandgap fibers working at 2 m with reduced optical nonlinearities and lower losses (10)(11)(12)(13) are currently under test for network implementation. Furthermore, integrated photonics is also seeking to expand into the 2-m region due to the reduced linear and nonlinear losses that are expected for the well-established silicon platform (14,15). For example, silicon-germanium waveguides have been recently shown to enable communication speeds up to 10 gigabytes/s (16) over a propagation length of nearly a centimeter.…”

Section: Introductionmentioning

confidence: 99%

“…For example, silicon-germanium waveguides have been recently shown to enable communication speeds up to 10 gigabytes/s (16) over a propagation length of nearly a centimeter. In addition, as is the case for free-space communications, the guided wave infrastructure is also bound to adopt a layer of security, and thus, QKD at 2 m will be required for these new integrated technologies (15).…”

Section: Introductionmentioning

confidence: 99%

Two-photon quantum interference and entanglement at 2.1 μm

et al. 2020

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Quantum-enhanced optical systems operating within the 2 μm spectral region have the potential to revolutionise emerging applications in communications, sensing and metrology. However, to date, sources of entangled photons have been realised mainly in the near-infrared 700-1550 nm spectral window. Here, using custom-designed lithium niobate crystals for spontaneous parametric down-conversion and tailored superconducting-nanowire single-photon detectors, we demonstrate two-photon interference and polarisation-entangled photon pairs at 2090 nm, i.e. in the mid-infrared and significantly beyond existing technology. These results open the 2 μm window for the development of optical quantum technologies such as quantum key distribution in nextgeneration mid-infrared fibre communications systems and novel Earth-to-satellite communications that exploits reduced atmospheric scattering in a spectral region with a reduced solar background.

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“…In 2018, McCracken, et al numerically investigated the mid-infrared single-photon generation in a range of novel nonlinear materials, including PPLN, PPKTP, GaP, GaAs, CdSiP 2 , and ZnGeP 2 [10]. In 2019, Rosenfeld et al experimentally prepared MIR photon pairs in a four-wave mixing process from a silicon-on-insulator waveguide at around 2.1 µm [11]. In 2020 Kundys et al numerically studied the reconfigurable MIR single-photon sources based on functional ferroelectrics, i.e., PMN-0.38PT crystal at 5.6 µm [12].…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared spectrally-uncorrelated biphotons generation from doped PPLN: a theoretical investigation

Wei,

Cai,

Ding

et al. 2020

Preprint

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We theoretically investigate the preparation of mid-infrared (MIR) spectrally-uncorrelated biphotons from a spontaneous parametric down-conversion process using doped LN crystals, including MgO doped LN, ZnO doped LN, and In2O3 doped ZnLN with doping ratio from 0 to 7 mol%. The tilt angle of the phase-matching function and the corresponding poling period are calculated under type-II, type-I, and type-0 phase-matching conditions. We also calculate the thermal properties of the doped LN crystals and their performance in Hong-Ou-Mandel interference. It is found that the doping ratio has a substantial impact on the group-velocity-matching (GVM) wavelengths. Especially, the GVM2 wavelength of co-doped InZnLN crystal has a tunable range of 678.7 nm, which is much broader than the tunable range of less than 100 nm achieved by the conventional method of adjusting the temperature. It can be concluded that the doping ratio can be utilized as a degree of freedom to manipulate the biphoton state. The spectrally uncorrelated biphotons can be used to prepare pure single-photon source and entangled photon source, which may have promising applications for quantum-enhanced sensing, imaging, and communications at the MIR range.

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Mid-infrared quantum optics in silicon

Cited by 3 publications

References 52 publications

Advances in silicon quantum photonics

Advances in silicon quantum photonics

Two-photon quantum interference and entanglement at 2.1 μm

Mid-infrared spectrally-uncorrelated biphotons generation from doped PPLN: a theoretical investigation

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