High-quality photonic entanglement for wavelength-multiplexed quantum communication based on a silicon chip

Abstract

We report an efficient energy-time entangled photon-pair source based on four-wave mixing in a CMOS-compatible silicon photonics ring resonator. Thanks to suitable optimization, the source shows a large spectral brightness of 400\,pairs of entangled photons /s/MHz for $500\mu \mathrm{W}$ pump power. Additionally, the resonator has been engineered so as to generate a frequency comb structure compatible with standard telecom dense wavelength division multiplexers. We demonstrate high-purity energy-time entanglement, i.e., free of photonic noise, with near perfect raw visibilities ($>$~98\%) between various channel pairs in the telecom C-band. Such a compact source stands as a path towards more complex quantum photonic circuits dedicated to quantum communication systems.

References in corpus (16)

• Quantum Cryptography
• On-chip quantum interference between silicon photon-pair sources
• CMOS-compatible, multiplexed source of heralded photon pairs: towards integrated quantum combs
• Qubit entanglement on a silicon photonic chip
• Parallel generation of quadripartite cluster entanglement in the optical frequency comb
• Photon Pair Generation in Silicon Micro-Ring Resonator with Reverse Bias Enhancement
• Ultra-low power nonlinear optics in a high Q CMOS compatible integrated micro-ring resonator
• Experimental investigation of the robustness of partially entangled photons over 11km
• A compact and reconfigurable silicon nitride time-bin entanglement circuit
• Time-bin entangled photon pair generation from Si micro-ring resonator
• Entanglement distribution over 150 km in wavelength division multiplexed channels for quantum cryptography
• Hybrid photonic circuit for multiplexed heralded single photons
• From Classical Four-Wave Mixing to Parametric Fluorescence in Silicon micro-ring resonators
• On-Chip Quantum Interference from a Single Silicon Ring Resonator Source
• Twin photon pairs in a high-Q silicon microresonator
• Optimal analysis of ultra broadband energy-time entanglement for high bit-rate dense wavelength division multiplexed quantum networks

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• High-performance quantum entanglement generation via cascaded second-order nonlinear processes
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• Realizing an entanglement-based multi-user quantum network with integrated photonics
• High-Rate Photon Pairs and Sequential Time-Bin Entanglement with Si${}_3$N${}_4$ Ring Microresonators
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• On-chip multiplexed multiple entanglement sources in a single silicon nanowire
• Optical pump-rejection filter based on silicon sub-wavelength engineered photonic structures
• Quantum interferometers: principles and applications
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• Polarization-entangled quantum frequency comb from a silicon nitride microring resonator
• Entanglement Classifier in Chemical Reactions
• Energy-time and time-bin entanglement: past, present and future
• Certification of genuine time-bin and energy-time entanglement with integrated photonics
• Quantum Teleportation from Telecom Photons to Erbium-ion Ensembles
• Discrete and parallel frequency-bin entanglement generation from quantum frequency comb
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• Entanglement Structure Certification Based on Energy-Restricted State Discrimination