Quantum gambling using two nonorthogonal states

Won Young Hwang, Doyeol Ahn, Sung Woo Hwang

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A new (remote) quantum gambling scheme that makes use of the fact that nonorthogonal states cannot be distinguished with certainty is presented. In this 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 scheme is secure against the non-entanglement attack. Heuristically, the scheme is secure in the case of the entanglement attack.

Original languageEnglish
Article number064302
Pages (from-to)64302/1-64302/4
JournalPhysical Review A
Issue number6
StatePublished - Dec 2001

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