Single-qubit optical quantum fingerprinting

Details Single-qubit optical quantum fingerprinting Single-qubit optical quantum fingerprinting

2004-10-27

arxiv.org/abs/quant-ph/0410232v1

Phys. Rev. Lett. 95, 150502 (2005)

Physics

Quantum Physics

4 pages, one figure

Scientific paper

10.1103/PhysRevLett.95.150502

We analyze and demonstrate the feasibility and superiority of linear optical single-qubit fingerprinting over its classical counterpart. For one-qubit fingerprinting of two-bit messages, we prepare `tetrahedral' qubit states experimentally and show that they meet the requirements for quantum fingerprinting to exceed the classical capability. We prove that shared entanglement permits 100% reliable quantum fingerprinting, which will outperform classical fingerprinting even with arbitrary amounts of shared randomness.

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