Time Resolved Control of Electron Tunnelling Times and Single-shot Spin Readout in a Quantum Dot

Details Time Resolved Control of Electron Tunnelling Times and Single-shot Spin Readout in a Quantum Dot Time Resolved Control of Electron Tunnelling Times and Single-shot Spin Readout in a Quantum Dot

2009-10-14

arxiv.org/abs/0910.2520v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted to EP2DS 2009 Conference Proceedings

Scientific paper

We are pursuing a capability to perform time resolved manipulations of single spins in quantum dot circuits involving more than two quantum dots. In this paper, we demonstrate full counting statistics as well as averaging techniques we use to calibrate the tunnel barriers. We make use of this to implement the Delft protocol for single shot single spin readout in a device designed to form a triple quantum dot potential. We are able to tune the tunnelling times over around three orders of magnitude. We obtain a spin relaxation time of 300 microseconds at 10T.

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