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All-electrical coherent control of the exciton states in a single quantum dot

Boyer De La Giroday, A and Bennett, AJ and Pooley, MA and Stevenson, RM and Sköld, N and Patel, RB and Farrer, I and Ritchie, DA and Shields, AJ (2010) All-electrical coherent control of the exciton states in a single quantum dot. Physical Review B - Condensed Matter and Materials Physics, 82. ISSN 1098-0121

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Abstract

We demonstrate high-fidelity reversible transfer of quantum information from the polarization of photons into the spin state of an electron-hole pair in a semiconductor quantum dot. Moreover, spins are electrically manipulated on a subnanosecond time scale, allowing us to coherently control their evolution. By varying the area of the electrical pulse, we demonstrate phase-shift and spin-flip gate operations with near-unity fidelities. Our system constitutes a controllable quantum interface between flying and stationary qubits, an enabling technology for quantum logic in the solid state. © 2010 The American Physical Society.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:28
Last Modified: 07 Sep 2017 01:45
DOI: