Quantum control of a trapped electron spin in a quantum dot using photon polarization

François Dubin; Monique Combescot; Gavin K. Brennen; Romain Melet

doi:10.1103/PhysRevLett.101.217403

Quantum control of a trapped electron spin in a quantum dot using photon polarization

François Dubin^*, Monique Combescot, Gavin K. Brennen, Romain Melet

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

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Abstract

We present an original scheme to rotate at will one electron spin trapped in a quantum dot by just acting on pump-laser polarization: The quantum control is based on the virtual excitation of electron light-hole pairs with π symmetry, as possibly done by using a single laser beam with a propagation axis slightly tilted with respect to a weak magnetic field. This allows us to fully control the effective axis of the electron spin rotation through the pump polarization. Our analysis shows that quantum dots with inverted valence states are ideal candidates for ultrafast, high-fidelity, all optical control.

Original language	English
Article number	217403
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review Letters
Volume	101
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.101.217403
Publication status	Published - 21 Nov 2008

Bibliographical note

Francois Dubin, Monique Combescot, Gavin K. Brennen, and Romain Melet, Physical review letters, 101, 217403, 2008. Copyright 2008 by the American Physical Society. The original article can be found at http://link.aps.org/doi/10.1103/PhysRevLett.101.217403

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Quantum control of a trapped electron spin in a quantum dot using photon polarization

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