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6 papers · 1 filter
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…
Co-doped (La,Sr)TiO3-d: a high-Curie temperature diluted magnetic system with large spin-polarization
G. Herranz, R. Ranchal, M. Bibes +12
We report on tunneling magnetoresistance (TMR) experiments that demonstrate the existence of a significant spin polarization in Co-doped (La,Sr)TiO3-d (Co-LSTO), a ferromagnetic di…
Influence of parasitic phases on the properties of BiFeO3 epitaxial thin films
H. Bea, M. Bibes, A. Barthelemy +10
We have explored the influence of deposition pressure and temperature on the growth of BiFeO3 thin films by pulsed laser deposition onto (001)-oriented SrTiO3 substrates. Single-ph…
Ultra low threshold current THz quantum cascade lasers based on buried strip-waveguides
S. Dhillon, J. Alton, S. Barbieri +5
THz quantum cascade lasers based on a novel buried cavity geometry are demonstrated by combining double-metal waveguides with proton implantation. Devices are realised with emissio…
Coherent matter wave inertial sensors for precision measurements in space
Yann Le Coq, Jocelyn A. Retter, Simon Richard +2
We analyze the advantages of using ultra-cold coherent sources of atoms for matter-wave interferometry in space. We present a proof-of-principle experiment that is based on an anal…
Coherence length of an elongated condensate: a study by matter-wave interferometry
Mathilde Hugbart, Jocelyn Retter, Fabrice Gerbier +6
We measure the spatial correlation function of Bose-Einstein condensates in the cross-over region between phase-coherent and strongly phase-fluctuating condensates. We observe the…