Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Gac Jones"'
Autor:
Gac Jones, H. Montagu, Sanjeev Kumar, Ian Farrer, J. Griffiths, Michael Pepper, David A. Ritchie
Publikováno v:
Applied Physics Letters. 118:124002
We present results on electron transport in quasi-one dimensional (1D) quantum wires in GaAs/AlGaAs heterostructures obtained using an asymmetric confinement potential. The variation of the energy levels of the spatially quantized states is followed
Autor:
Masaya Kataoka, Gac Jones, A. Petrie, Stephen P. Giblin, Patrick See, David A. Ritchie, J. Griffiths, Ian Farrer, Tjbm Janssen
The dynamic capture of electrons in a semiconductor quantum dot (QD) by raising a potential barrier is a crucial stage in metrological quantized charge pumping. In this work, we use a quantum point contact (QPC) charge sensor to study errors in the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03b0797ff3dcf7efc982c3b6fac70548
http://arxiv.org/abs/1809.10081
http://arxiv.org/abs/1809.10081
Autor:
Graham Creeth, Harvey E. Beere, Shun-Tsung Lo, Michael Pepper, Chin-Hung Chen, Gac Jones, J. P. Griffiths, Ju-Chun Fan, Tse-Ming Chen, L. W. Smith, David A. Ritchie, Che-Wei Chang, Ian Farrer
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Nature Communications
Nature Communications
The spatial separation of electron spins followed by the control of their individual spin dynamics has recently emerged as an essential ingredient in many proposals for spin-based technologies because it would enable both of the two spin species to b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::564b9a476754602b27f9af94fb9e5a81
http://arxiv.org/abs/1801.10148
http://arxiv.org/abs/1801.10148
Autor:
Patrick See, Gac Jones, J. D. Fletcher, David A. Humphreys, N. Johnson, Masaya Kataoka, Ian Farrer, Michael Pepper, David A. Ritchie, J. Griffiths, Tjbm Janssen
We demonstrate an ultrafast voltage sampling technique using a stream of electron wavepackets. Electrons are emitted from a single-electron pump and travel through electron waveguides towards a detector potential barrier. Our electrons sample an inst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbb4043cf72f314d717a23407ff0b8a6
http://arxiv.org/abs/1610.00484
http://arxiv.org/abs/1610.00484
Autor:
Gac Jones, Michael Kelly, A. A. J. Lesage, Ian Farrer, Charles G. Smith, H. Al-Taie, David A. Ritchie, Francois Sfigakis, Patrick See, Karen Thomas, J. P. Griffiths, L. W. Smith
Publikováno v:
Physical Review Applied. 5
We study 95 split gates of different size on a single chip using a multiplexing technique. Each split gate defines a one-dimensional channel on a modulation-doped GaAs/AlGaAs heterostructure, through which the conductance is quantized. The yield of d
Autor:
Gac Jones, J. Griffiths, Sanjeev Kumar, David A. Ritchie, Michael Pepper, P. See, Chengyu Yan, Ian Farrer
Publikováno v:
Journal of Physics: Conference Series. 964:012003
In the present work, we investigate the source-drain bias spectrum of a hybrid quantum device consisting of a dot-like QPC coupled to an electronic cavity. A singlet-triplet transition manifested as finite-bias anomaly is observed when the cavity is
Autor:
Alessandro Cresti, Malcolm R. Connolly, Kuei-Lin Chiu, Charles G. Smith, J. P. Griffiths, Gac Jones
Publikováno v:
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2015, 92 (15), pp.155408. ⟨10.1103/PhysRevB.92.155408⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2015, 92 (15), pp.155408. ⟨10.1103/PhysRevB.92.155408⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2015, 92 (15), pp.155408. ⟨10.1103/PhysRevB.92.155408⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2015, 92 (15), pp.155408. ⟨10.1103/PhysRevB.92.155408⟩
We have studied the transport properties of a large graphene double quantum dot under the influence of background disorder potential and magnetic field. At low temperatures, the evolution of the charge-stability diagram as a function of B-field is in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8344d0aa7b75e330436bf265319db23
https://hal.archives-ouvertes.fr/hal-01964873
https://hal.archives-ouvertes.fr/hal-01964873
Autor:
E. D. Herbschleb, Paolo Marconcini, Charles G. Smith, Massimo Macucci, Gac Jones, Malcolm R. Connolly, J. P. Griffiths, R. K. Puddy
Publikováno v:
Physical Review B. 92
We fabricate a graphene p-n-p heterojunction and exploit the coherence of weakly-confined Dirac quasiparticles to resolve the underlying scattering potential using low temperature scanning gate microscopy. The tip-induced perturbation to the heteroju
Autor:
Gac Jones, Ian Farrer, David J. P. Ellis, Frederik F. Floether, Andrew J. Shields, E. Murray, J. P. Lee, Thomas Meany, Anthony J. Bennett, David A. Ritchie, J. Griffiths
Fundamental to integrated photonic quantum computing is an on-chip method for routing and modulating quantum light emission. We demonstrate a hybrid integration platform consisting of arbitrarily designed waveguide circuits and single photon sources.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1610eea805914e12975c5f805dd6c895
http://arxiv.org/abs/1507.00256
http://arxiv.org/abs/1507.00256
Autor:
Gac Jones, David A. Ritchie, Charles G. Smith, H. Al-Taie, J. Griffiths, Michael Kelly, Patrick See, Ian Farrer, A. A. J. Lesage, L. W. Smith
A multiplexer technique is used to individually measure an array of 256 split gates on a single GaAs/AlGaAs heterostructure. This results in the generation of large volumes of data, which requires the development of automated data analysis routines.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1efdaf9a203cccff70f574f9739e118f
https://eprints.whiterose.ac.uk/88066/1/634008_1_merged_1418770586.pdf
https://eprints.whiterose.ac.uk/88066/1/634008_1_merged_1418770586.pdf