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arXiv · 2401.06369

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

Pengfei Wang·Soyoung Baek·Keiichi Edamatsu·Fumihiro Kaneda
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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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Pengfei Wang, Soyoung Baek, Keiichi Edamatsu, Fumihiro Kaneda. 2024-01-12. Low-Loss Polarization-Maintaining Optical Router for Photonic Quantum Information Processing. https://doi.org/10.35848/1347-4065%2Fad3533

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