Entanglement between remote continuous variable quantum systems: effects of transmission loss

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dc.creatorMadsen, Lars Bojer
dc.creatorMolmer, Klaus
dc.date2006-03-29
dc.date.accessioned2026-07-07T07:08:09Z
dc.date.available2026-07-07T07:08:09Z
dc.descriptionWe study the effects of losses on the entanglement created between two separate atomic gases by optical probing and homodyne detection of the transmitted light. The system is well-described in the Gaussian state formulation. Analytical results quantifying the degree of entanglement between the two gases are derived and compared with the entanglement in a pair of light pulses generated by an EPR source. For low (high) transmission losses the highest degree of entanglement is obtained by probing with squeezed (antisqueezed) light. In an asymmetric setup where light is only sent one way through the atomic samples, we find that the logarithmic negativity of entanglement attains a constant value $-\log_2(N)$ with $N=1/3$ irrespectively of the loss along the transmission line.
dc.description7 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0603265
dc.identifierhttp://arxiv.org/abs/quant-ph/0603265
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110651
dc.subjectQuantum Physics
dc.titleEntanglement between remote continuous variable quantum systems: effects of transmission loss
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