Monday, November 26, 2012

1211.5261 (Antony R. Lee et al.)

Spatially extended Unruh-DeWitt detectors for relativistic quantum

Antony R. Lee, Ivette Fuentes
Unruh-DeWitt detectors interacting locally with a quantum field are systems under consideration for relativistic quantum information processing. In most works, the detectors are assumed to be point-like and therefore, couple with the same strength to all modes of the field spectrum. We propose the use of a more realistic detector model where the detector has a finite size conveniently tailored by a spatial profile. We design a spatial profile such that the detector, when inertial, naturally couples to a peaked distribution of Minkowski modes. In the uniformly accelerated case, the detector couples to a peaked distribution of Rindler modes. Such distributions are of special interest in the analysis of entanglement in non-inetial frames. We use our detector model to show that the noise detected in the Minkowski vacuum and in single particle states is a function of the detector's acceleration.
View original:

No comments:

Post a Comment