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Condensed Matter > Statistical Mechanics

Title: Entanglement in a fermionic spin chain containing a single boson under decoherence

Abstract: The concurrence between the first and the last parts of a fermionic spin chain containing a single boson is investigated at finite low temperature in the vicinity of a weak homogeneous magnetic field. We consider different positions for the boson in the chain and study concurrence without/under decoherence and express some interesting phase flip and bit flip reactions of the pairwise entanglement between first and the last half-spins of the chain. Our investigations show that the concurrence between two half-spins has different behavior for various positions of the single boson along the chain. Indeed, we realize that the position of the single boson has an essential role to probe the pairwise entanglement between two spins located at the ends of a fermionic chain. Interestingly, the entanglement remains alive for higher temperatures when the boson is adjacent to the first site of the chain.
Comments: 17 pages, 8 figures
Subjects: Statistical Mechanics (cond-mat.stat-mech); Quantum Physics (quant-ph)
Cite as: arXiv:1803.06426 [cond-mat.stat-mech]
  (or arXiv:1803.06426v1 [cond-mat.stat-mech] for this version)

Submission history

From: Hamid Arian Zad [view email]
[v1] Fri, 16 Mar 2018 23:05:53 GMT (2630kb)