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Narrow-band single-photon emission in the near infrared for quantum key distribution
E. Wu, Vincent Jacques, Heping Zeng +3
We report on the observation of single colour centers in natural diamond samples emitting in the near infrared region when optically excited. Photoluminescence of these single emit…
Dynamics of a pulsed continuous variable quantum memory
Aurelien Dantan, Jean Cviklinski, Michel Pinard +1
We study the transfer dynamics of non-classical fluctuations of light to the ground-state collective spin components of an atomic ensemble during a pulsed quantum memory sequence,…
Controlling excess noise in fiber optics continuous variables quantum key distribution
Jérôme Lodewyck, Thierry Debuisschert, Rosa Tualle-Brouri +1
We describe a continuous variables coherent states quantum key distribution system working at 1550 nm, and entirely made of standard fiber optics and telecom components, such as in…
Single-photon emission in the near infrared from diamond colour centre
E Wu, V. Jacques, F. Treussart +3
Optically active colour centres based on Nickel-Nitrogen impurities are observed in natural diamond under continuous-wave excitation. The spectral analysis shows that the single em…
Photoluminescence of single colour defects in 50 nm diamond nanocrystals
F. Treussart, V. Jacques, E. Wu +3
We used optical confocal microscopy to study optical properties of diamond 50 nm nanocrystals first irradiated with an electron beam, then dispersed as a colloidal solution and fin…
Quantum logic via optimal control in holographic dipole traps
U. Dorner, T. Calarco, P. Zoller +2
We propose a scheme for quantum logic with neutral atoms stored in an array of holographic dipole traps where the positions of the atoms can be rearranged by using holographic opti…