Quantum secure direct communication by Einstein-Podolsky-Rosen pairs and entanglement swapping

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dc.creatorGao, Ting
dc.creatorYan, Feng-Li
dc.creatorWang, Zhi-Xi
dc.date2004-06-13
dc.date.accessioned2026-07-07T06:09:54Z
dc.date.available2026-07-07T06:09:54Z
dc.descriptionWe present a quantum secure direct communication scheme achieved by swapping quantum entanglement. In this scheme a set of ordered Einstein-Podolsky-Rosen (EPR) pairs is used as a quantum information channel for sending secret messages directly. After insuring the safety of the quantum channel, the sender Alice encodes the secret messages directly by applying a series local operations on her particles sequence according to their stipulation. Using three EPR pairs, three bits of secret classical information can be faithfully transmitted from Alice to remote Bob without revealing any information to a potential eavesdropper. By both Alice and Bob's GHZ state measurement results, Bob is able to read out the encoded secret messages directly. The protocol is completely secure if perfect quantum channel is used, because there is not a transmission of the qubits carrying the secret message between Alice and Bob in the public channel.
dc.description5 pages, no figure
dc.identifierhttps://arxiv.org/abs/quant-ph/0406083
dc.identifierhttp://arxiv.org/abs/quant-ph/0406083
dc.identifierIl Nuovo Cimento, 119B (2004) 313
dc.identifierdoi:10.1393/ncb/i2004-10090-1
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/92118
dc.subjectQuantum Physics
dc.titleQuantum secure direct communication by Einstein-Podolsky-Rosen pairs and entanglement swapping
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