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arXiv · 1406.6165

Entangling time-bin qubits with a switch

Hiroki Takesue
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Abstract

A time-bin qubit is a promising candidate qubit for advanced quantum information processing systems operating over optical fibers or integrated quantum photonic circuits. However, the single- and two-qubit operations of time-bin qubits have been largely unexplored compared with those of polarization qubits. Here, I present a simple scheme for implementing a basic two-qubit operation, namely an "entangling" operation of two independent time-bin qubits, based on Hong-Ou-Mandel quantum interference in a high-speed 2x2 optical switch. With the proposed scheme, the formation of a time-bin entanglement was confirmed experimentally.

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Hiroki Takesue. 2014-06-24. Entangling time-bin qubits with a switch. https://doi.org/10.1103/physreva.89.062328

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