Výsledky vyhledávání - "Pooley, M. A."

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Energy-Tunable Quantum Dot with Minimal Fine Structure Created by Using Simultaneous Electric and Magnetic Fields

Autor: Pooley, M. A., Bennett, A. J., Stevenson, R. M., Shields, A. J., Farrer, I., Ritchie, D. A.

Publikováno v: Phys. Rev. Applied 1, 024002 (2014)

The neutral biexciton cascade of single quantum dots is a promising source of entangled photon pairs. The character of the entangled state is determined by the energy difference between the excitonic eigenstates known as fine-structure splitting (FSS

Externí odkaz: http://arxiv.org/abs/1507.07702

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Engineering quantum dots for electrical control of the fine structure splitting

Autor: Pooley, M. A., Bennett, A. J., Farrer, I., Ritchie, D. A., Shields, A. J.

Publikováno v: Appl. Phys. Lett. 103, 031105 (2013)

We have studied the variation in fine-structure splitting (FSS) under application of vertical electric field in a range of quantum dots grown by different methods. In each sample we confirm that this energy splitting changes linearly over the field r

Externí odkaz: http://arxiv.org/abs/1507.06178

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Controlled-NOT gate operating with single photons

Autor: Pooley, M. A., Ellis, D. J. P., Patel, R. B., Bennett, A. J., Chan, K. H. A., Farrer, I., Ritchie, D. A., Shields, A. J.

Publikováno v: Appl. Phys. Lett. 100, 211103 (2012)

The initial proposal for scalable optical quantum computing required single photon sources, linear optical elements such as beamsplitters and phaseshifters, and photon detection. Here we demonstrate a two qubit gate using indistinguishable photons fr

Externí odkaz: http://arxiv.org/abs/1205.4899

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Electric-field-induced coherent coupling of the exciton states in a single quantum dot

Autor: Bennett, A. J., Pooley, M. A., Stevenson, R. M., Ward, M. B., Patel, R. B., de la Giroday, A. Boyer, Sköld, N., Farrer, I., Nicoll, C. A., Ritchie, D. A., Shields, A. J.

Publikováno v: Nature Physics 6, 947-950 (2010)

The signature of coherent coupling between two quantum states is an anticrossing in their energies as one is swept through the other. In single semiconductor quantum dots containing an electron-hole pair the eigenstates form a two-level system that c

Externí odkaz: http://arxiv.org/abs/1203.5909

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Free induction decay of a superposition stored in a quantum dot

Autor: Bennett, A. J., Pooley, M. A., Stevenson, R. M., Farrer, I., Ritchie, D. A., Shields, A. J.

Publikováno v: Phys. Rev. B 84, 195401 (2011)

We study the free evolution of a superposition initialized with high fidelity in the neutral-exciton state of a quantum dot. Readout of the state at later times is achieved by polarized photon detection, averaged over a large number of cycles. By con

Externí odkaz: http://arxiv.org/abs/1203.5908

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

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

Publikováno v: Phys. Rev. B 82, 241301 (2010)

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 tim

Externí odkaz: http://arxiv.org/abs/1011.2641

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