Quantum transport and counting statistics in closed systems

Details Quantum transport and counting statistics in closed systems Quantum transport and counting statistics in closed systems

2009-12-09

arxiv.org/abs/0912.1690v1

Physica E 42, 555 (2010)

Physics

Quantum Physics

9 pages, 2 figures. Proceedings of FQMT conference (Prague, 2008)

Scientific paper

10.1016/j.physe.2009.06.024

A current can be induced in a closed device by changing control parameters. The amount $Q$ of particles that are transported via a path of motion, is characterized by its expectation value $$, and by its variance $Var(Q)$. We show that quantum mechanics invalidates some common conceptions about this statistics. We first consider the process of a double path crossing, which is the prototype example for counting statistics in multiple path non-trivial geometry. We find out that contrary to the common expectation, this process does not lead to partition noise. Then we analyze a full stirring cycle that consists of a sequence of two Landau-Zener crossings. We find out that quite generally counting statistics and occupation statistics become unrelated, and that quantum interference affects them in different ways.

Affiliated with

Also associated with

No associations

Rating

Quantum transport and counting statistics in closed systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quantum transport and counting statistics in closed systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum transport and counting statistics in closed systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-275790