Room-temperature photonic quantum computing in integrated silicon photonics with germanium-silicon single-photon avalanche diodes
- URL: http://arxiv.org/abs/2405.04763v2
- Date: Mon, 26 Aug 2024 06:37:49 GMT
- Title: Room-temperature photonic quantum computing in integrated silicon photonics with germanium-silicon single-photon avalanche diodes
- Authors: Neil Na, Chou-Yun Hsu, Erik Chen, Richard Soref,
- Abstract summary: This paper proposes and analyzes 300 K waveguide-integrated germanium-silicon (GeSi) single-photon avalanche diodes (SPADs)
High-performance quantum computing at room temperature is predicted for this PQC architecture.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Most, if not all, photonic quantum computing (PQC) relies upon superconducting nanowire single-photon detectors (SNSPDs) based on niobium (Nb) operated at a temperature < 4 K. This paper proposes and analyzes 300 K waveguide-integrated germanium-silicon (GeSi) single-photon avalanche diodes (SPADs) based on the recently demonstrated normal-incidence GeSi SPADs operated at room temperature, and shows that their performance is competitive against that of SNSPDs in a series of metrics for PQC with a reasonable time-gating window to resolve the issue of dark-count rate (DCR). These GeSi SPADs become photon-number-resolving avalanche diodes (PNRADs) by deploying a spatially-multiplexed M-fold-waveguide array of M GeSi SPADs. Using on-chip waveguided spontaneous four-wave mixing (SFWM) sources and waveguided field-programmable interferometer mesh (FPIM) circuits, together with the high-metric SPADs and PNRADs, high-performance quantum computing at room temperature is predicted for this PQC architecture.
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