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arXiv · 1011.1156

Single-shot initialization of electron spin in a quantum dot using a short optical pulse

Vivien Loo·Loic Lanco·Olivier Krebs·Pascale Senellart·Paul Voisin
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Abstract

We propose a technique to initialize an electron spin in a semiconductor quantum dot with a single short optical pulse. It relies on the fast depletion of the initial spin state followed by a preferential, Purcell-accelerated desexcitation towards the desired state thanks to a micropillar cavity. We theoretically discuss the limits on initialization rate and fidelity, and derive the pulse area for optimal initialization. We show that spin initialization is possible using a single optical pulse down to a few tens of picoseconds wide.

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Vivien Loo, Loic Lanco, Olivier Krebs, Pascale Senellart, Paul Voisin. 2010-11-04. Single-shot initialization of electron spin in a quantum dot using a short optical pulse. https://doi.org/10.1103/physrevb.83.033301

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