Abstract
We address the problem of springlike coupling between bosons in an open-chain configuration where the counter-rotating terms are explicitly included. We show that fruitful insight can be gained by decomposing the time-evolution operator of this problem into a pattern of linear-optics elements. This allows us to provide a clear picture of the effects of the counter-rotating terms in the important problem of long-haul entanglement distribution. The analytic control over the variance matrix of the state of the bosonic register allows us to track the dynamics of the entanglement. This helps in designing a global addressing scheme, complemented by a proper initialization of the register, which quantitatively improves the entanglement between the extremal oscillators in the chain, thus providing a strategy for feasible long-distance entanglement distribution.
Original language | English |
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Article number | 052307 |
Pages (from-to) | 052307-052308 |
Number of pages | 2 |
Journal | Physical Review A |
Volume | 72 |
Issue number | 5 |
DOIs | |
Publication status | Published - Nov 2005 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- General Physics and Astronomy