Perspectives on epitaxial InGaP for quantum and nonlinear optics

Abstract

Nonlinear optical materials are essential for the development of both nonlinear and quantum optics and have advanced recently from bulk crystals to integrated material platforms. In this Perspective, we provide an overview of the emerging InGaP ${\chi }^{(2)}$ nonlinear integrated photonics platform and its experimental achievements. With its exceptional ${\chi }^{(2)}$ nonlinearity and low optical losses, the epitaxial InGaP platform significantly enhances a wide range of second-order nonlinear optical effects, from second-harmonic generation to entangled photon pair sources, achieving efficiencies several orders of magnitude beyond the current state of the art. Moreover, the InGaP platform enables quantum nonlinear optics at the few- and single-photon levels via passive nonlinearities, which has broad implications for quantum information processing and quantum networking. We also examine the current limitations of the InGaP platform and propose potential solutions to fully unlock its capabilities.

References in corpus (50)

• Theory of Photon Blockade by an Optical Cavity with One Trapped Atom
• Optical Quantum Computing
• Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency
• Ultrahigh-efficiency second-harmonic generation in nanophotonic PPLN waveguides
• Quantum repeaters: From quantum networks to the quantum internet
• Squeezed states of light and their applications in laser interferometers
• Experimental demonstration of a heralded entanglement source
• A photonic quantum information interface
• Integrated gallium phosphide nonlinear photonics
• Diamond Nanophotonics
• On-Chip Optical Squeezing
• The Unconventional Photon Blockade
• Stable single photon source in near infrared
• Observation of soliton pulse compression in photonic crystal waveguides
• PPLN Waveguide for Quantum Communication
• Towards 1% single photon nonlinearity with periodically-poled lithium niobate microring resonators
• Ultra-bright Quantum Photon Sources on Chip
• Near-degenerate quadrature-squeezed vacuum generation on a silicon-nitride chip
• Postselected versus nonpostselected quantum teleportation using parametric down-conversion
• Conditional preparation of single photons for scalable quantum-optical networking
• Heralded generation of entangled photon pairs
• Low-Noise GaAs Quantum Dots for Quantum Photonics
• Continuous-wave 6-dB-squeezed light with 2.5-THz-bandwidth from single-mode PPLN waveguide
• Photonic chip-based continuous-travelling-wave parametric amplifier
• Silicon carbide for integrated photonics
• 17,000 %/W Second Harmonic Conversion Efficiency in Single Crystalline Aluminum Nitride Microresonators
• Fabrication of single nickel-nitrogen defects in diamond by chemical vapor deposition
• Photonic Crystal Optical Parametric Oscillator
• Integrated Quantum Optical Phase Sensor
• Nonlinear interaction between two heralded single photons
• Chip-based squeezing at a telecom wavelength
• Wavelength- and material-dependent absorption in GaAs and AlGaAs microcavities
• 0.54 μm resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography
• Faithful entanglement swapping based on sum-frequency generation
• 400%/W second harmonic conversion efficiency in $14\mu \mathrm{m}$-diameter gallium phosphide-on-oxide resonators
• Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement
• InGaP quantum nanophotonic integrated circuits with 1.5% nonlinearity-to-loss ratio
• Observation of ultra-broadband, beamlike parametric downconversion
• Broadband bright twin beams and their up-conversion
• Single photon emitters based on Ni/Si related defects in single crystalline diamond
• Monolithic Semiconductor Chips as a Source for Broadband Wavelength-Multiplexed Polarization Entangled Photons
• Generation of broadband spontaneous parametric fluorescence using multiple bulk nonlinear crystals
• Interaction of Independent Single Photons based on Integrated Nonlinear Optics
• Single photon frequency conversion for frequency multiplexed quantum networks in the telecom band
• InGaP ${\chi }^{(2)}$ integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation
• Efficient Type II Second Harmonic Generation in an Indium Gallium Phosphide on insulator wire waveguide aligned with a crystallographic axis
• SPDC in ppLN ridge waveguide: an analysis for efficient twin photon generation at 1550 nm
• An ultra-broadband photonic-chip-based traveling-wave parametric amplifier
• Few-photon transport via a multimode nonlinear cavity: theory and applications
• Quantum correlated photons via a passive nonlinear microcavity