Hanbury Brown Twiss effects in channel mixing normal-superconducting systems
Abstract
An investigation of the role of the proximity effect in current cross correlations in multiterminal, channel-mixing, normal-superconducting systems is presented. The proposed experiment is an electrical analog of the optical Hanbury Brown Twiss intensity cross correlation experiment. A chaotic quantum dot is connected via quantum point contacts to two normal and one superconducting reservoir. For dominating coupling of the dot to the superconducting reservoir, a magnetic flux of the order of a flux quantum in the dot suppresses the proximity effect and reverses the sign of the cross correlations, from positive to negative. In the opposite limit, for a dominating coupling to the normal reservoirs, the proximity effect is weak and the cross correlation are positive for a nonideal contact between the dot and the superconducting reservoir. We show that in this limit the correlations can be explained with particle counting arguments.
Keywords
Cite
@article{arxiv.cond-mat/0210045,
title = {Hanbury Brown Twiss effects in channel mixing normal-superconducting systems},
author = {M. Buttiker and P. Samuelsson},
journal= {arXiv preprint arXiv:cond-mat/0210045},
year = {2015}
}
Comments
Invited talk at LT23