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arXiv · 1210.1595

Dark Bell states in tunnel-coupled spin qubits

Rafael Sánchez·Gloria Platero
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Abstract

We investigate the dynamical purification of maximally entangled electron states by transport through coupled quantum dots. Under resonant ac driving and coherent tunneling, even-parity Bell states perform Rabi oscillations that decouple from the environment, leading to a dark state. The two electrons remain spatially separated, one in each quantum dot. We propose configurations where this effect will prove as antiresonances in transport spectroscopy experiments.

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Rafael Sánchez, Gloria Platero. 2013-02-14. Dark Bell states in tunnel-coupled spin qubits. https://doi.org/10.1103/physrevb.87.081305

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