Entanglement generation in harmonic chains: Tagging by squeezing

Mauro Paternostro, Myungshik Kim, E. Park, J. Lee

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

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 languageEnglish
Article number052307
Pages (from-to)052307-052308
Number of pages2
JournalPhysical Review A
Volume72
Issue number5
DOIs
Publication statusPublished - Nov 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

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