Microwave single-photon detection using a hybrid spin-optomechanical quantum interface

• URL: http://arxiv.org/abs/2401.10455v2
• Date: Fri, 17 Jan 2025 21:03:46 GMT
• Title: Microwave single-photon detection using a hybrid spin-optomechanical quantum interface
• Authors: Pratyush Anand, Ethan G. Arnault, Matthew E. Trusheim, Kurt Jacobs, Dirk R. Englund,
• Abstract summary: We propose a hybrid spin-optomechanical interface to detect single microwave photons.<n>These results suggest a viable path to low-noise, high-efficiency single-photon detection at microwave frequencies.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Semiconductor single-photon detectors cannot be straightforwardly adapted for the microwave regime, primarily because microwave photons carry far less energy and thus require cryogenic temperatures and specialized architectures. Here, we propose a hybrid spin-optomechanical interface to detect single microwave photons where the microwave photons are coupled to a phononic resonator via piezoelectric actuation. This phononic cavity also acts as a photonic cavity with either a single embedded Silicon-Vacancy (SiV) center in diamond or an ensemble of these centers, bridging optical single-photon detection protocols into the microwave domain. We model the detection process as a communication channel whose capacity is quantified by the mutual information \(I(A;B)\) between the true photon occupancy (A) and the detector outcome (B). Depending on experimentally achievable parameters, simulations predict \(I(A;B)\) in the range \(0.57\,\ln(2)\) to \(0.67\,\ln(2)\), corresponding to true-positive (detection) probabilities above 90\% and false-positive (dark count) probabilities below 10\% per detection interval. These results suggest a viable path to low-noise, high-efficiency single-photon detection at microwave frequencies.

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