Quantum direct communication with continuous variables

TY - JOUR

T1 - Quantum direct communication with continuous variables

AU - Pirandola, S.

AU - Braunstein, S. L.

AU - Mancini, S.

AU - Lloyd, S.

PY - 2008/10/1

Y1 - 2008/10/1

N2 - We show how continuous-variable systems can allow the direct communication of messages with an acceptable degree of privacy. This is possible by combining a suitable phase-space encoding of the plain message with real-time checks of the quantum communication channel. The resulting protocol works properly when a small amount of noise affects the quantum channel. If this noise is non-tolerable, the protocol stops leaving a limited amount of information to a potential eavesdropper.

AB - We show how continuous-variable systems can allow the direct communication of messages with an acceptable degree of privacy. This is possible by combining a suitable phase-space encoding of the plain message with real-time checks of the quantum communication channel. The resulting protocol works properly when a small amount of noise affects the quantum channel. If this noise is non-tolerable, the protocol stops leaving a limited amount of information to a potential eavesdropper.

KW - SECURE COMMUNICATION

KW - Quantum states

KW - KEY

UR - http://www.scopus.com/inward/record.url?scp=79051469023&partnerID=8YFLogxK

U2 - 10.1209/0295-5075/84/20013

DO - 10.1209/0295-5075/84/20013

M3 - Letter

SN - 0295-5075

VL - 84

SP - 20013

JO - EPL

JF - EPL

IS - 2

M1 - 20013

ER -