InP membrane micro-ring resonator for generating heralded single photons

Abstract

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InP membrane integrated photonics research

“…The high optical confinement in the InP-based membrane waveguides leads to a much-increased photon density and therefore to a reduced threshold for nonlinear processes. This makes them attractive for all-optical and quantum applications [118,119]. However undesired two-photon absorption (TPA) and FCA co-exist in these waveguides and can be more pronounced due to the higher photon density as well as the material direct bandgap.…”

Bound states in the continuum for photonic integration and InP membranes for heralded single photon generation (Conference Presentation)

“…The use of InP membranes can potentially facilitate the integration of active III-V lasers, and Geiger mode avalanche photodiodes for single photon detection and nonlinear devices on large scale silicon wafers which can integrate the large delay interferometers and filters needed for quantum information processing. We discuss the advantages and disadvantages of InP for SFWM and present recent results on the use of InP membranes for generating heralded single photons [4].…”

Integrated Reconfigurable Photon-Pair Source Based on High-Q Nonlinear Chalcogenide Glass Microring Resonators

“…Moreover, the large bandgap (E g = 2.39 eV) of the Ge 25 Sb 10 S 65 material prevents saturation phenomenon induced by twophoton absorption at the telecom band that is inevitably encountered in InP or SOI platforms with strong χ (3) nonlinearities. 39,43 Another property of concern is the single-mode degree of generated photon pairs, which is commonly characterized by a second-order autocorrelation measurement. The number of cavity modes N could be inferred from the measured autocorrelation, given by g (0) self (2) = 1 + 1/N.…”