TY - JOUR
T1 - Experimental demonstration of free-space decoy-state quantum key distribution over 144 km
AU - Schmitt-Manderbach, Tobias
AU - Weier, Henning
AU - Fürst, Martin
AU - Ursin, Rupert
AU - Tiefenbacher, Felix
AU - Scheidl, Thomas
AU - Perdigues, Josep
AU - Sodnik, Zoran
AU - Kurtsiefer, Christian
AU - Rarity, John G.
AU - Zeilinger, Anton
AU - Weinfurter, Harald
N1 - DOI: 10.1103/PhysRevLett.98.010504
Coden: PRLTA
Art-Nr: 010504
Affiliations: Max-Planck-Institute for Quantum Optics, D-85748 Garching, Germany; Department of Physics, Ludwig-Maximilians-University, D-80799 Munich, Germany; Institute for Experimental Physics, University of Vienna, A-1090 Vienna, Austria; Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, A-1090 Vienna, Austria; European Space Agency, NL-2200 AG Noordwijk, Netherlands; Department of Physics, National University of Singapore, Singapore 117542, Singapore; Department of Electrical and Electronic Engineering, University of Bristol, Bristol BS8 1UB, United Kingdom
Adressen: Schmitt-Manderbach, T.; Max-Planck-Institute for Quantum Optics D-85748 Garching, Germany; email: [email protected]
Source-File: Phys070307scopus.csv
Import aus Scopus: 2-s2.0-33846383808
Importdatum: 09.03.2007 16:10:14
25.02.2008: Datenanforderung 2152 (Import Sachbearbeiter)
PY - 2007
Y1 - 2007
N2 - We report on the experimental implementation of a Bennett-Brassard 1984 (BB84) protocol type quantum key distribution over a 144 km free-space link using weak coherent laser pulses. Optimization of the link transmission was achieved with bidirectional active telescope tracking, and the security was ensured by employing decoy-state analysis. This enabled us to distribute a secure key at a rate of 12.8bit/s at an attenuation of about 35 dB. Utilizing a simple transmitter setup and an optical ground station capable of tracking a spacecraft in low earth orbit, this outdoor experiment demonstrates the feasibility of global key distribution via satellites. Π2007 The American Physical Society.
AB - We report on the experimental implementation of a Bennett-Brassard 1984 (BB84) protocol type quantum key distribution over a 144 km free-space link using weak coherent laser pulses. Optimization of the link transmission was achieved with bidirectional active telescope tracking, and the security was ensured by employing decoy-state analysis. This enabled us to distribute a secure key at a rate of 12.8bit/s at an attenuation of about 35 dB. Utilizing a simple transmitter setup and an optical ground station capable of tracking a spacecraft in low earth orbit, this outdoor experiment demonstrates the feasibility of global key distribution via satellites. Π2007 The American Physical Society.
U2 - 10.1103/PhysRevLett.98.010504
DO - 10.1103/PhysRevLett.98.010504
M3 - Article
SN - 0031-9007
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
M1 - 010504
ER -