Dark Bell states in tunnel-coupled spin qubits
Mesoscale and Nanoscale Physics
2013-02-15 v2 Quantum Physics
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.
Cite
@article{arxiv.1210.1595,
title = {Dark Bell states in tunnel-coupled spin qubits},
author = {Rafael Sánchez and Gloria Platero},
journal= {arXiv preprint arXiv:1210.1595},
year = {2013}
}
Comments
5 pages, 4 figures + supplementary information. Published version