Noise-induced phase transition in the electronic Mach-Zehnder interferometer

Details Noise-induced phase transition in the electronic Mach-Zehnder interferometer Noise-induced phase transition in the electronic Mach-Zehnder interferometer

2009-03-19

arxiv.org/abs/0903.3349v1

Phys. Rev. Lett. 103, 036801 (2009).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

We consider dephasing in the electronic Mach-Zehnder interferometer strongly coupled to current noise created by a voltage biased quantum point contact (QPC). We find the visibility of Aharonov-Bohm oscillations as a function voltage bias and express it via the cumulant generating function of noise. In the large-bias regime, high-order cumulants of current add up to cancel the dilution effect of a QPC. This leads to an abrupt change in the dependence of the visibility on voltage bias which occurs at the QPC's transparency T=1/2. Quantum fluctuations in the vicinity of this point smear out the sharp transition.

Affiliated with

Also associated with

No associations

Rating

Noise-induced phase transition in the electronic Mach-Zehnder interferometer 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 Noise-induced phase transition in the electronic Mach-Zehnder interferometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise-induced phase transition in the electronic Mach-Zehnder interferometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-648760