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arXiv · 0806.4339

Non-demolishing measurement of a spin qubit state via Fano resonance

V. Vyurkov·L. Gorelik·A. Orlikovsky
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Abstract

Fano resonances are proposed to perform a measurement of a spin state (whether it is up or down) of a single electron in a quantum dot via a spin-polarized current in an adjacent quantum wire. Rashba-like spin-orbit interaction in a quantum dot prohibits spin-flip events (Kondo-like phenomenon). That ensures the measurement to be non-demolishing.

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V. Vyurkov, L. Gorelik, A. Orlikovsky. 2008-07-04. Non-demolishing measurement of a spin qubit state via Fano resonance. https://arxiv.org/abs/0806.4339

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