English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report raster scan multiplexed charge-stability diagram measurements fortuning multiple gate-defined quantum dots in GaAs/AlGaAs heterostructures. Weevaluate the charge sensitivity of the quantum point contact (QPC) in bothradio frequency (rf)-reflectometry and direct current (dc)-transport modes,where we measure the signal-to-noise ratio (SNR) of 40 for rf-QPC withintegration time per pixel of 10ms , corresponding to 1.14ms for resolvingsingle electron transition in few electron regime. The high SNR for reasonableintegration time allows fast two-dimensional (2D) scanning, which we use tofacilitate double and triple quantum dot tuning process. We configure highlystable raster scan multiplexed quantum dot tuning platform using a switchingmatrix and transformer-coupled alternating current (ac) ramp sources withsoftware control. As an example of high-throughput multiple quantum dot tuning,we demonstrate systematic triple quantum dot (TQD) formation using thisplatform in which a multiplexed combination of 2D scans enables theidentification of few electron regime in multiple quantum dots in just a fewminutes. The method presented here is general, and we expect that the tuningplatform is applicable to more complex multiple quantum dot arrays, allowingefficient quantum dot system Hamiltonian parameter calibration.

Fast raster scan multiplexed charge stability measurements toward high-throughput quantum dot array calibration