Zobrazeno 1 - 10
of 283
pro vyhledávání: '"Ellis, D J"'
Autor:
Xiang, Z. -H., Huwer, J., Skiba-Szymanska, J., Stevenson, R. M., Ellis, D. J. P., Farrer, I., Ward, M. B., Ritchie, D. A., Shields, A. J.
Publikováno v:
Commun Phys 3, 121 (2020)
Entangled light emitting diodes based on semiconductor quantum dots are promising devices for security sensitive quantum network applications, thanks to their natural lack of multi photon-pair generation. Apart from telecom wavelength emission, netwo
Externí odkaz:
http://arxiv.org/abs/1909.12222
Autor:
Wells, L. M., Kalliakos, S., Villa, B., Ellis, D. J. P., Stevenson, R. M., Bennett, A. J., Farrer, I., Ritchie, D. A., Shields, A. J.
Publikováno v:
Physical Review Applied, 11(6) (2019)
We exploit the nonlinearity arising from the spin-photon interaction in an InAs quantum dot to demonstrate phase shifts of scattered light pulses at the single-photon level. Photon phase shifts of close to 90 degrees are achieved using a charged quan
Externí odkaz:
http://arxiv.org/abs/1907.07991
Autor:
Lee, J. P., Villa, B., Bennett, A. J., Stevenson, R. M., Ellis, D. J. P., Farrer, I., Ritchie, D. A., Shields, A. J.
Publikováno v:
J P Lee et al, Quantum Sci. Technol.4 025011 (2019)
We propose a scheme to make use of recent advances in cavity QED-enhanced resonance fluorescence from quantum dots to generate a stream of entangled and indistinguishable photons. We then demonstrate that we can optically manipulate the state of a tr
Externí odkaz:
http://arxiv.org/abs/1804.11311
Autor:
Lee, J. P., Wells, L. M., Villa, B., Kalliakos, S., Stevenson, R. M., Ellis, D. J. P., Farrer, I., Ritchie, D. A., Bennett, A. J., Shields, A. J.
Publikováno v:
Phys. Rev. X 8, 021078 (2018)
Photonic time bin qubits are well suited to transmission via optical fibres and waveguide circuits. The states take the form $\frac{1}{\sqrt{2}}(\alpha \ket{0} + e^{i\phi}\beta \ket{1})$, with $\ket{0}$ and $\ket{1}$ referring to the early and late t
Externí odkaz:
http://arxiv.org/abs/1804.00713
Autor:
Ellis, D. J. P., Bennett, A. J., Dangel, C., Lee, J. P., Griffiths, J. P., Mitchell, T. A., Paraiso, T. -K., Spencer, P., Ritchie, D. A., Shields, A. J.
We report a compact, scalable, quantum photonic integrated circuit realised by combining multiple, independent InGaAs/GaAs quantum-light-emitting-diodes (QLEDs) with a silicon oxynitride waveguide circuit. Each waveguide joining the circuit can then
Externí odkaz:
http://arxiv.org/abs/1803.04468
Autor:
Villa, B., Bennett, A. J., Ellis, D. J. P., Lee, J. P., Skiba-Szymanska, J., Mitchell, T. A., Griffiths, J. P., Farrer, I., Ritchie, D. A., Ford, C. J. B., Shields, A. J.
Publikováno v:
Applied Physics Letters, vol. 111, no. 1, p. 011103, Jul. 2017
We report the efficient coherent photon scattering from a semiconductor quantum dot embedded in a pillar microcavity. We show that a surface acoustic wave can periodically modulate the energy levels of the quantum dot, but has a negligible effect on
Externí odkaz:
http://arxiv.org/abs/1707.00976
Autor:
Lee, J. P., Bennett, A. J., Stevenson, R. M., Ellis, D. J. P., Farrer, I., Ritchie, D. A., Shields, A. J.
Publikováno v:
Quantum Sci. Technol. 3 024008 (2018)
Quantum states superposed across multiple particles or degrees of freedom are of crucial importance for the development of quantum technologies. Creating these states deterministically and with high effciency is an ongoing challenge. A promising appr
Externí odkaz:
http://arxiv.org/abs/1703.10403
Autor:
Lee, J. P., Murray, E., Bennett, A. J., Ellis, D. J. P., Dangel, C., Farrer, I., Spencer, P., Ritchie, D. A., Shields, A. J.
Publikováno v:
Appl. Phys. Lett. 110, 071102 (2017)
Compact and electrically controllable on-chip sources of indistinguishable photons are desirable for the development of integrated quantum technologies. We demonstrate that two quantum dot light emitting diodes (LEDs) in close proximity on a single c
Externí odkaz:
http://arxiv.org/abs/1701.04255
Photons do not interact directly with each other, but conditional control of one beam by another can be achieved with non-linear optical media at high field intensities. It is exceedingly difficult to reach such intensities at the single photon level
Externí odkaz:
http://arxiv.org/abs/1605.06281
Autor:
Lee, J. P., Bennett, A. J., Skiba-Szymanska, J., Ellis, D. J. P., Farrer, I., Ritchie, D. A., Shields, A. J.
Publikováno v:
Phys. Rev. B 93, 085407 (2016)
We report Ramsey interference in the excitonic population of a negatively charged quantum dot revealing the coherence of the state in the limit where radiative decay is dominant. Our experiments show that the decay time of the Ramsey interference is
Externí odkaz:
http://arxiv.org/abs/1508.05749