Single-qubit optical quantum fingerprinting

Abstract

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.

4 pages, one figure

References in corpus (5)

• Quantum fingerprinting
• Experimental observation of four-photon entanglement from down-conversion
• Homodyne tomography characterization and nonlocality of a dual-mode optical qubit
• Optical mode characterization of single photons prepared via conditional measurements on a biphoton state
• One-qubit fingerprinting schemes

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