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8 papers · 1 filter
Security Aspects of Practical Quantum Cryptography
Gilles Brassard, Norbert Lütkenhaus, Tal Mor +1
The use of quantum bits (qubits) in cryptography holds the promise of secure cryptographic quantum key distribution schemes. Unfortunately, the implemented schemes can be totally i…
Entangled Coherent State Qubits in an Ion Trap
W. J. Munro, G. J. Milburn, B. C. Sanders
We show how entangled qubits can be encoded as entangled coherent states of two-dimensional centre-of-mass vibrational motion for two ions in an ion trap. The entangled qubit state…
Transient radio emisison from SAX J1808.4-3658
B. M. Gaensler, B. W. Stappers, T. J. Getts
We report on the detection of radio emission from the accretion-powered X-ray millisecond pulsar SAX J1808.4-3658, using the Australia Telescope Compact Array. We detected a ~0.8 m…
Quantum cryptography via parametric downconversion
Gilles Brassard, Tal Mor, Barry C. Sanders
The use of quantum bits (qubits) in cryptography holds the promise of secure cryptographic quantum key distribution schemes. It is based usually on single-photon polarization state…
Spontaneous emission of polaritons from a Bose-Einstein condensate
Karl-Peter Marzlin, Weiping Zhang
We study the spontaneous emission of a partially excited Bose-Einstein condensate composed of two-level atoms. The formation of polaritons induced by the ground-state part of the c…
Optical detection of a BCS phase transition in a trapped gas of fermionic atoms
Weiping Zhang, C. A. Sackett, R. G. Hulet
Light scattering from a spin-polarized degenerate Fermi gas of trapped ultracold Li-6 atoms is studied. We find that the scattered light contains information which directly reflect…