Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic circuit

Abstract

Near-infrared Hong-Ou-Mandel quantum interference is observed in silicon nanophotonic directional couplers with raw visibilities on-chip at 90.5%. Spectrally-bright 1557-nm two-photon states are generated in a periodically-poled KTiOPO4 waveguide chip, serving as the entangled photon source and pumped with a self-injection locked laser, for the photon statistical measurements. Efficient four-port coupling in the communications C-band and in the high-index-contrast silicon photonics platform is demonstrated, with matching theoretical predictions of the quantum interference visibility. Constituents for the residual quantum visibility imperfection are examined, supported with theoretical analysis of the sequentially-triggered multipair biphoton contribution and techniques for visibility compensation, towards scalable high-bitrate quantum information processing and communications.

15 pages, 6 figures

References in corpus (18)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Sudden Death of Entanglement
• Silica-on-Silicon Waveguide Quantum Circuits
• Quantum walks of correlated particles
• Manipulating multi-photon entanglement in waveguide quantum circuits
• Strongly correlated photons on a chip
• Integrated photonic quantum gates for polarization qubits
• Polarization entangled state measurement on a chip
• Fast Purcell-enhanced single photon source in 1,550-nm telecom band from a resonant quantum dot-cavity coupling
• Quantum interference and manipulation of entanglement in silicon wire waveguide quantum circuits
• Fibre-optics implementation of asymmetric phase-covariant quantum cloner
• Indistinguishability of independent single photons
• Entanglement generation by Fock-state filtration
• Realizing quantum controlled phase-flip gate through quantum dot in silicon slow-light photonic crystal waveguide
• Nanocrystals in silicon photonic crystal standing-wave cavities as spin-photon phase gates for quantum information processing
• Fiber-based cryogenic and time-resolved spectroscopy of PbS quantum dots
• Mutual Preservation of Entanglement
• Permutation asymmetry inducing entanglement between degrees of freedom in multiphoton states

Cited by in corpus (9)

• Silicon Quantum Photonics
• Photon Pair Generation in Silicon Micro-Ring Resonator with Reverse Bias Enhancement
• Waveguide Integrated Superconducting Single Photon Detectors Implemented as Coherent Perfect Absorbers
• On-Chip Quantum Interference from a Single Silicon Ring Resonator Source
• Quantum interference in heterogeneous superconducting-photonic circuits on a silicon chip
• 648 Hilbert space dimensionality in a biphoton frequency comb
• Monolithic Integration of a Quantum Emitter with a Compact On-chip Beam-splitter
• Silicon photonic processor of two-qubit entangling quantum logic
• On-chip interaction-free measurements via the quantum Zeno effect