Physics – Quantum Physics
Scientific paper
2004-08-23
Physics
Quantum Physics
20 pages book-style, 3 figures
Scientific paper
One of the main ingredients in most quantum information protocols is a reliable source of two entangled systems. Such systems have been generated experimentally several years ago for light but has only in the past few years been demonstrated for atomic systems. None of these approaches however involve two atomic systems situated in separate environments. This is necessary for the creation of entanglement over arbitrary distances which is required for many quantum information protocols such as atomic teleportation. We present an experimental realization of such distant entanglement based on an adaptation of the entanglement of macroscopic gas samples containing about 10^11 cesium atoms shown previously by our group. The entanglement is generated via the off-resonant Kerr interaction between the atomic samples and a pulse of light. The achieved entanglement distance is 0.35m but can be scaled arbitrarily. The feasibility of an implementation of various quantum information protocols using macroscopic samples of atoms has therefore been greatly increased. We also present a theoretical modeling in terms of canonical position and momentum operators X and P describing the entanglement generation and verification in presence of decoherence mechanisms.
Julsgaard Brian
Polzik Eugene S.
Sherson Jacob
No associations
LandOfFree
Distant Entanglement of Macroscopic Gas Samples does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Distant Entanglement of Macroscopic Gas Samples, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distant Entanglement of Macroscopic Gas Samples will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-303956