Entangling time-bin qubits with a switch

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.

12 pages, 5 figures

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Cited by in corpus (5)

• Linear Optical Quantum Computation with Frequency-Comb Qubits and Passive Devices
• Quantum process tomography of a controlled-phase gate for time-bin qubits
• Entanglement generation using a controlled-phase gate for time-bin qubits
• Generation of a time-bin Greenberger--Horne--Zeilinger state with an optical switch
• Photonic quantum information with time-bins: Principles and applications