Theoretical Physics

9 May 2012
Time: 15:00 to 16:00
Location: E C Stoner SR 8.62

Nicolai Friis (Nottingham)

Shaking entanglement

In the emerging field of relativistic quantum information, the past decade has revealed a number of novel kinematic effects on entanglement between observers in relative inertial motion and between one inertial and one uniformly linearly accelerating observer.
The analyses of uniform acceleration mentioned above involve several ingredients that make it difficult to compare the theoretical predictions to experimentally realizable situations. Several of these concerns have been recently addressed by studying correlations between field modes of bosonic and fermionic quantum fields confined in two cavities, one inertial and the other undergoing motion that consists of segments of inertial motion and uniform acceleration. We present these techniques in an analysis of the entanglement and the nonlocality of bosonic and fermionic quantum fields confined to cavities on world tubes that consists of inertial and uniformly accelerated segments, for small accelerations but arbitrarily long travel times. We fully characterise the emerging corrections to the initial entanglement and study how degradation effects can be avoided. We further discuss how entanglement is generated between the field modes within a single cavity due to its motion. By the equivalence principle, the results provide a model of entanglement generation by gravitational effects.

 D. E. Bruschi, I. Fuentes and J. Louko, e-print arXiv:1105.1875v3[quant-ph] (2011).
 N. F., A. R. Lee, D. E. Bruschi and J. Louko, Phys. Rev. D 85, 025012 (2012).
 N. F., D. E. Bruschi, J. Louko, and I. Fuentes, e-print: arXiv:1201.0549v1 [quant-ph] (2012).
 D. E. Bruschi, A. Dragan, A. R. Lee, I. Fuentes and J. Louko, e-print arXiv:1201.0663 [quant-ph] (2012).



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