Packaged foundry-fabricated silicon spiral photon pair source

Joseph Monteleone III; Matthew van Niekerk; Mario Ciminelli; Gerald Leake; Daniel Coleman; Michael Fanto; Stefan Preble

doi:10.1117/12.2633145

3 October 2022 Packaged foundry-fabricated silicon spiral photon pair source

Joseph Monteleone III, Matthew van Niekerk, Mario Ciminelli, Gerald Leake, Daniel Coleman, Michael Fanto, Stefan Preble

Proceedings Volume 12206, Quantum Nanophotonic Materials, Devices, and Systems 2022; 1220606 (2022) https://doi.org/10.1117/12.2633145
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

We have demonstrated a packaged Silicon photon pair source. The spiral silicon waveguide source is 500 nm x 220 nm x 2 cm long and was packaged with input/output optical fibers enabling turn-key generation of photon pairs by connecting the input optical fiber to a telecommunication grade laser. In this work, we experimentally characterized the generation of bi-photons by spontaneous four-wave mixing in the Silicon waveguide. The insertion loss of the chip, after packaging, was measured to be approximately 15 dB (3 dB/facet, waveguide propagation loss of less than 1.5 dB/cm, 6 dB from splitters sequence). We investigated the phase matching of the source by wavelength tuning the 1 nm bandpass filters and found that the generated bi-photons have a half-bandwidth of 10 nm about the pump wavelength. We investigate pulse pumping using an actively mode-locked fiber laser with a 500 MHz repetition rate, pulse duration of approximately 30 ps and peak pulse power of 400 mW. Excitation of the pulsed source with a power of 1.4 mW through the chip generated 300 kHz coincidence rates after passing the chip’s output through a series of spectral bandpass filters (-1.4 db in channel 1 and -2.4 dB in channel 2 of filter loss and approximately 85 % efficiency of the detectors: inferred on-chip pair generation rate of 58 MHz). We also investigate two sources with 6 mW of continuous-wave pump power to generate 1550 nm bi-photons, generating 6.0 kHz coincidence rates (inferred on-chip pair generation rate of 2.3 MHz).

Conference Presentation

Citation Download Citation

Joseph Monteleone III, Matthew van Niekerk, Mario Ciminelli, Gerald Leake, Daniel Coleman, Michael Fanto, and Stefan Preble "Packaged foundry-fabricated silicon spiral photon pair source", Proc. SPIE 12206, Quantum Nanophotonic Materials, Devices, and Systems 2022, 1220606 (3 October 2022); https://doi.org/10.1117/12.2633145

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