Simon Gröblacher et al 2006 New J. Phys. 8 75 doi:10.1088/1367-2630/8/5/075
Experimental quantum cryptography with qutrits
Simon Gröblacher1, Thomas Jennewein2, Alipasha Vaziri3, Gregor Weihs4 and Anton Zeilinger1,2
Show affiliationsWe produce two identical keys using, for the first time, entangled trinary quantum systems (qutrits) for quantum key distribution. The advantage of qutrits over the normally used binary quantum systems is an increased coding density and a higher security margin. The qutrits are encoded into the orbital angular momentum of photons, namely Laguerre–Gaussian modes with azimuthal index l + 1, 0 and −1, respectively. The orbital angular momentum is controlled with phase holograms. In an Ekert-type protocol the violation of a three-dimensional Bell inequality verifies the security of the generated keys. A key is obtained with a qutrit error rate of approximately 10%.
- PACS
-
03.67.Dd Quantum cryptography and communication security
42.50.Dv Quantum state engineering and measurements
42.65.Lm Parametric down conversion and production of entangled photons
03.67.Lx Quantum computation architectures and implementations
03.67.Pp Quantum error correction and other methods for protection against decoherence
- Subjects
- Dates
-
Issue 5 (May 2006)
Received 1 February 2006
Published 26 May 2006
-
Experimental quantum cryptography with qutrits
Simon Gröblacher et al 2006 New J. Phys. 8 75
-
Neutrino physics overview
J W F Valle 2006 J. Phys.: Conf. Ser. 53 473
-
Intermittent contact mode piezoresponse force microscopy in a liquid environment
Brian J Rodriguez et al 2009 Nanotechnology 20 195701
-
Temperature gradient driven electron transport in NSTX and Tore Supra
W. Horton et al 2005 Nucl. Fusion 45 976
-
North-western French Neolithic dendrochronology: prospects for a 2000 year oak chronology
Vincent Bernard 2003 Meas. Sci. Technol. 14 1510
-
The design of a nanoscale molecular barrow
C Joachim et al 2002 Nanotechnology 13 330
-
Design and synthesis of mono-molecular machines
G Rapenne et al 2006 J. Phys.: Condens. Matter 18 S1797
-
Hemispherical Power Asymmetry in the Third-Year Wilkinson Microwave Anisotropy Probe Sky Maps
H. K. Eriksen et al 2007 ApJ 660 L81
-
Electrical breakdown of water in microgaps
Karl Schoenbach et al 2008 Plasma Sources Sci. Technol. 17 024010
-
Switching dynamics in reaction networks induced by molecular discreteness
Yuichi Togashi and Kunihiko Kaneko 2007 J. Phys.: Condens. Matter 19 065150
Users also read
What's this?Related review articles
What's this?- Hamiltonian complexity
- Natural and artificial atoms for quantum computation
- Quantum dynamics of quantum bits