Low-Loss Polarization-Maintaining Optical Router for Photonic Quantum Information Processing

• URL: http://arxiv.org/abs/2401.06369v2
• Date: Sat, 6 Apr 2024 05:20:40 GMT
• Title: Low-Loss Polarization-Maintaining Optical Router for Photonic Quantum Information Processing
• Authors: Pengfei Wang, Soyoung Baek, Keiichi Edamatsu, Fumihiro Kaneda,
• Abstract summary: We demonstrate a polarization-maintaining electro-optic router compatible with single photons. Our custom electro-optic modulator is embedded in a configuration of a Mach-Zehnder interferometer. We observe the performance of the router with 2-4% loss, 20 dB switching extinction ratio, 2.9 ns rise time, and $>$ 99% polarization process fidelity to an ideal identity operation.
• Score: 3.729752231378518
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In photonic quantum applications, optical routers are required to handle single photons with low loss, high speed, and preservation of their quantum states. Single-photon routing with maintained polarization states is particularly important for utilizing them as qubits. Here, we demonstrate a polarization-maintaining electro-optic router compatible with single photons. Our custom electro-optic modulator is embedded in a configuration of a Mach-Zehnder interferometer, where each optical component achieves polarization-maintaining operation. We observe the performance of the router with 2-4% loss, 20 dB switching extinction ratio, 2.9 ns rise time, and $>$ 99% polarization process fidelity to an ideal identity operation.

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