Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact

Details Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact

2009-07-06

arxiv.org/abs/0907.1010v1

Applied Physics Letters, 91, 222104 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

We report on charge sensing measurements of a GaAs semiconductor quantum dot device using a radio frequency quantum point contact (rf-QPC). The rf-QPC is fully characterized at 4 K and milli-Kelvin temperatures and found to have a bandwidth exceeding 20 MHz. For single-shot charge sensing we achieve a charge sensitivity of 2x10^-4 e/(sqrt)Hz referred to the neighboring dot's charge. The rf-QPC compares favorably with rf-SET electrometers and promises to be an extremely useful tool for characterizing and measuring semiconductor quantum systems on fast timescales.

Affiliated with

Also associated with

No associations

Rating

Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact 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 Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-27953