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17 papers · 1 filter
Atomic four-wave mixing via condensate collisions
Aurélien Perrin, Craig M. Savage, D. Boiron +3
We perform a theoretical analysis of atomic four-wave mixing via a collision of two Bose-Einstein condensates of metastable helium atoms, and compare the results to a recent experi…
Multidimensional reconciliation for continuous-variable quantum key distribution
Anthony Leverrier, Romain Alléaume, Joseph Boutros +2
We propose a method for extracting an errorless secret key in a continuous-variable quantum key distribution protocol, which is based on Gaussian modulation of coherent states and…
Entanglement, Non-linear Dynamics, and the Heisenberg Limit
L. Pezze', A. Smerzi
We show that the quantum Fisher information provides a sufficient condition to recognize multi-particle entanglement in a qubit state. The same criterion gives a necessary and…
Quantum Physics Exploring Gravity in the Outer Solar System: The Sagas Project
P. Wolf, Ch. J. Bordé, A. Clairon +52
We summarise the scientific and technological aspects of the SAGAS (Search for Anomalous Gravitation using Atomic Sensors) project, submitted to ESA in June 2007 in response to the…
Density modulations in an elongated Bose-Einstein condensate released from a disordered potential
David Clément, Philippe Bouyer, Alain Aspect +1
We observe large density modulations in time-of-flight images of elongated Bose-Einstein condensates, initially confined in a harmonic trap and in the presence of weak disorder. Th…
Recent progress on the manipulation of single atoms in optical tweezers for quantum computing
A. Browaeys, J. Beugnon, C. Tuchendler +10
This paper summarizes our recent progress towards using single rubidium atoms trapped in an optical tweezer to encode quantum information. We demonstrate single qubit rotations on…