Quantum Gambling Using Two Nonorthogonal States

Details Quantum Gambling Using Two Nonorthogonal States Quantum Gambling Using Two Nonorthogonal States

2000-10-30

arxiv.org/abs/quant-ph/0010103v5

Phys. Rev. A 64, 064302 (2001)

Physics

Quantum Physics

no essential correction, 4 pages, RevTex

Scientific paper

10.1103/PhysRevA.64.064302

We give a (remote) quantum gambling scheme that makes use of the fact that quantum nonorthogonal states cannot be distinguished with certainty. In the proposed scheme, two participants Alice and Bob can be regarded as playing a game of making guesses on identities of quantum states that are in one of two given nonorthogonal states: if Bob makes a correct (an incorrect) guess on the identity of a quantum state that Alice has sent, he wins (loses). It is shown that the proposed scheme is secure against the nonentanglement attack. It can also be shown heuristically that the scheme is secure in the case of the entanglement attack.

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