TY - GEN
T1 - Quantum cryptography with an ideal local relay
AU - Spedalieri, Gaetana
AU - Ottaviani, Carlo
AU - Braunstein, Samuel L.
AU - Gehring, Tobias
AU - Jacobsen, Christian Scheffmann
AU - Andersen, Ulrik Lund
AU - Pirandola, Stefano
PY - 2015
Y1 - 2015
N2 - We consider two remote parties connected to a relay by two quantum channels. To generate a secret key, they transmit coherent states to the relay, where the states are subject to a continuous-variable (CV) Bell detection. We study the ideal case where Alice's channel is lossless, i.e., the relay is locally in her lab and the Bell detection is perfomed with unit efficiency. This configuration allows us to explore the optimal performances achievable by CV measurement-device-independent quantum key distribution. This corresponds to the limit of a trusted local relay, where the detection loss can be re-scaled. Our theoretical analysis is confirmed by an experimental simulation where 10-4 secret bits per use can potentially be distributed at 170km assuming ideal reconciliation.
AB - We consider two remote parties connected to a relay by two quantum channels. To generate a secret key, they transmit coherent states to the relay, where the states are subject to a continuous-variable (CV) Bell detection. We study the ideal case where Alice's channel is lossless, i.e., the relay is locally in her lab and the Bell detection is perfomed with unit efficiency. This configuration allows us to explore the optimal performances achievable by CV measurement-device-independent quantum key distribution. This corresponds to the limit of a trusted local relay, where the detection loss can be re-scaled. Our theoretical analysis is confirmed by an experimental simulation where 10-4 secret bits per use can potentially be distributed at 170km assuming ideal reconciliation.
U2 - 10.1117/12.2202662
DO - 10.1117/12.2202662
M3 - Article in proceedings
VL - 9648
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Electro-Optical and Infrared Systems: Technology and Applications XII; and Quantum Information Science and Technology
PB - SPIE - International Society for Optical Engineering
T2 - Electro-Optical and Infrared Systems: Technology and Applications XII; and Quantum Information Science and Technology
Y2 - 21 September 2015 through 21 September 2015
ER -