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arXiv · 1708.07145

Time-bin to Polarization Conversion of Ultrafast Photonic Qubits

Connor Kupchak·Philip J. Bustard·Khabat Heshami·Jennifer Erskine·Michael Spanner·Duncan G. England·Benjamin J. Sussman
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Abstract

The encoding of quantum information in photonic time-bin qubits is apt for long distance quantum communication schemes. In practice, due to technical constraints such as detector response time, or the speed with which co-polarized time-bins can be switched, other encodings, e.g. polarization, are often preferred for operations like state detection. Here, we present the conversion of qubits between polarization and time-bin encodings using a method that is based on an ultrafast optical Kerr shutter and attain efficiencies of 97% and an average fidelity of 0.827+/-0.003 with shutter speeds near 1 ps. Our demonstration delineates an essential requirement for the development of hybrid and high-rate optical quantum networks.

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Connor Kupchak, Philip J. Bustard, Khabat Heshami, Jennifer Erskine, Michael Spanner, Duncan G. England, Benjamin J. Sussman. 2017-08-23. Time-bin to Polarization Conversion of Ultrafast Photonic Qubits. https://doi.org/10.1103/physreva.96.053812

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