Implementing an optical CNOT using spatial parity qubits

K. Kagalwala; G. Di Giuseppe; A. F. Abouraddy; B. E. A. Saleh

doi:10.1117/12.883995

3 June 2011 Implementing an optical CNOT using spatial parity qubits

K. Kagalwala, G. Di Giuseppe, A. F. Abouraddy, B. E. A. Saleh

Author Affiliations +

Proceedings Volume 8057, Quantum Information and Computation IX; 80570L (2011) https://doi.org/10.1117/12.883995
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

We describe an optical implementation of a CNOT gate in which the control qubit is the polarization of a single photon and the target qubit is the spatial parity of the same photon. The gate is implemented with a polarizationsensitive spatial light modulator. We characterize the operation of the gate using quantum process tomography and the spatial parity is analyzed with a modified Mach-Zehnder interferometer. We also demonstrate the CNOT-gate operation with arbitrary rotation of the target qubit and discuss the possibility of implementing multi-qubit CNOT gates using the same approach.

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K. Kagalwala, G. Di Giuseppe, A. F. Abouraddy, and B. E. A. Saleh "Implementing an optical CNOT using spatial parity qubits", Proc. SPIE 8057, Quantum Information and Computation IX, 80570L (3 June 2011); https://doi.org/10.1117/12.883995

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