Quantum information primitives using linear optics

Marco Fiorentino; David A. Fattal; Charles M. Santori; Sean M. Spillane; William J. Munro; Raymond G. Beausoleil

doi:10.1117/12.681628

29 August 2006 Quantum information primitives using linear optics

Marco Fiorentino, David A. Fattal, Charles M. Santori, Sean M. Spillane, William J. Munro, Raymond G. Beausoleil

Proceedings Volume 6305, Quantum Communications and Quantum Imaging IV; 63050E (2006) https://doi.org/10.1117/12.681628
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

We report on two experiments implementing quantum communications primitives in linear optics systems: a secure Quantum Random Bit Generator (QRBG) and a multi-qubit gate based on Two-Photon Multiple-Qubit (TPMQ) quantum logic. In the first we use photons to generate random numbers and introduce and implement a physics-based estimation of the sequence randomness as opposed to the commonly used statistical tests. This scheme allows one to detect and neutralize attempts to eavesdrop or influence the random number sequence. We also demonstrate a C-SWAP gate that can be used to implement quantum signature and fingerprinting protocols. A source of momentum-entangled photons, remote state preparation, and a C-SWAP gate are the ingredients used for this proof-of-principle experiment. While this implementation cannot be used in field applications due to the limitations of TPMQ logic, it provides useful insights into this protocol.

Citation Download Citation

Marco Fiorentino, David A. Fattal, Charles M. Santori, Sean M. Spillane, William J. Munro, and Raymond G. Beausoleil "Quantum information primitives using linear optics", Proc. SPIE 6305, Quantum Communications and Quantum Imaging IV, 63050E (29 August 2006); https://doi.org/10.1117/12.681628

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