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Trapped Ion Quantum Computing

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

arXiv
Authors: A. Boyer de la Giroday, A. J. Bennett, M. A. Pooley, R. M. Stevenson, N. Skold, R. B. Patel, I. Farrer, D. A. Ritchie, A. J. Shields

Year

2010

Paper ID

10469

Status

Preprint

Abstract Read

~2 min

Abstract Words

80

Citations

N/A

Abstract

We demonstrate high-fidelity reversible transfer of quantum information from the polarisation of photons into the spin-state of an electron-hole pair in a semiconductor quantum dot. Moreover, spins are electrically manipulated on a sub-nanosecond timescale, 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.

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  • We demonstrate high-fidelity reversible transfer of quantum information from the polarisation of photons into the spin-state of an electron-hole pair in a semiconductor quantum...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1011.2641 [2] arXiv https://arxiv.org/abs/1011.2641 [3] Publisher https://arxiv.org/abs/1011.2641

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