Results 11 to 20 of about 48,619 (333)

Fundamental limits of electron and nuclear spin qubit lifetimes in an isolated self-assembled quantum dot

npj Quantum Information, 2021
Combining external control with long spin lifetime and coherence is a key challenge for solid state spin qubits. Tunnel coupling with electron Fermi reservoir provides robust charge state control in semiconductor quantum dots, but results in undesired ...
George Gillard, Ian M. Griffiths, Gautham Ragunathan, Ata Ulhaq, Callum McEwan, Edmund Clarke, Evgeny A. Chekhovich   +6 more
doaj   +1 more source

On the effect of decoherence on quantum tunnelling

SN Applied Sciences, 2021
This work proposes a series of quantum experiments that can, at least in principle, allow for examining microscopic mechanisms associated with decoherence.
A. Y. Klimenko
doaj   +1 more source

Theoretical characterisation of electron tunnelling from granular activated carbon to electron accepting organisms in direct interspecies electron transfer

Scientific Reports, 2022
Direct interspecies electron transfer (DIET) has been identified as an efficient metabolism between symbiotically interacting organisms. One method of DIET uses conductive materials (e.g., granular activated carbon (GAC)) as a medium to shuttle electrons
Rohan Rao, Jing Hu, Po-Heng Lee
doaj   +1 more source

Dissipation and Tunnelling in Quantum Hall Bilayers [PDF]

, 2004
We discuss the interplay between transport and intrinsic dissipation in quantum Hall bilayers, within the framework of a simple thought experiment. We compute, for the first time, quantum corrections to the semiclassical dynamics of this system.
Derek K. K. Lee, Nigel R. Cooper, Robert L. Jack, S. M. Girvin   +3 more
core   +1 more source

Influence of classical resonances on chaotic tunnelling [PDF]

, 2006
Dynamical tunnelling between symmetry-related stable modes is studied in the periodically driven pendulum. We present strong evidence that the tunnelling process is governed by nonlinear resonances that manifest within the regular phase-space islands on ...
A. J. Lichtenberg, Amaury Mouchet, Christopher Eltschka, L. D. Landau, M. J. Davis, O. Bohigas, P. Schlagheck, Peter Schlagheck   +7 more
core   +4 more sources

Tunneling theory for a bilayer graphene quantum dot’s single- and two-electron states

New Journal of Physics, 2022
The tuneability and control of quantum nanostructures in two-dimensional materials offer promising perspectives for their use in future electronics. It is hence necessary to analyze quantum transport in such nanostructures.
Angelika Knothe, Leonid I Glazman, Vladimir I Fal’ko   +2 more
doaj   +1 more source

Cooperative quantum information erasure [PDF]

Quantum, 2023
We demonstrate an information erasure protocol that resets $N$ qubits at once. The method displays exceptional performances in terms of energy cost (it operates nearly at Landauer energy cost $kT \ln 2$), time duration ($\sim \mu s$) and erasure success ...
Lorenzo Buffoni, Michele Campisi
doaj   +1 more source

Quantum Tunneling on Graphs [PDF]

Communications in Mathematical Physics, 2012
We explore the tunneling behavior of a quantum particle on a finite graph, in the presence of an asymptotically large potential. Surprisingly the behavior is governed by the local symmetry of the graph around the wells.
Lin, Yong, Lippner, Gábor, Yau, Shing-Tung   +2 more
openaire   +2 more sources

Unified time analysis of photon and (nonrelativistic) particle Tunnelling, and the Superluminal group-velocity problem [PDF]

, 2001
A unified approach to the time analysis of tunnelling of nonrelativistic particles is presented, in which Time is regarded as a quantum-mechanical observable, canonically conjugated to Energy.
Aharonov, Aharonov, Allcock, Azbel’, Baldo, Baz’, Baz’, Binder, Blaauboer, Blanchard, Bohm, Brillouin, Brodowsky, Bush, Büttiker, Büttiker, Büttiker, Büttiker, Büttiker, Cardone, Cardone, Chen, Chiao, Chiao, Chiao, Chu, Chu, Collins, Condon, Crisp, Delgado, Delgado, Deutch, Dumont, Egusquiza, Enders, Enders, Enders, Enders, Enders, Enders, Engelman, Engelman, Engelman, Erasmo Recami, Esaki, Esposito, Esposito, Esteve, Fertig, Fertig, Fong, Fox, Froissart, Fujiwara, Fujiwara, Gamow, Garret, Gaveau, Giaver, Gien, Gien, Goldberger, Goldberger, Gotò, Gotò, Grot, Guéret, Guéret, Hartman, Hass, Hauge, Hauge, Heitmann, Holevo, Holevo, Huang, Huang, Hupert, Iannacone, Jacek Jakiel, Jakiel, Japha, Jauch, Jauho, Jauho, Jaworski, Jonson, Kobe, Kochański, Krekora, Krekora, Landauer, Landauer, Landauer, Leavens, Leavens, Leavens, Leavens, Leavens, Leavens, Leavens, Leavens, Lee, Lee, Leòn, León, Lippmann, Longhi, Longhi, Lucas, MacColl, Maidanyuk, Martin, Mignani, Milonni, Mitchell, Morse, Muga, Muga, Muga, Mugnai, Mugnai, Mugnai, Mugnai, Naimark, Nguen, Nimtz, Nimtz, Nimtz, Nimtz, Nimtz, Nimtz, Ohmura, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Olkhovsky, Paul, Pereyra, Petrillo, Petrillo, Pimpale, Pollak, Pollak, Previtera, Ranfagni, Ranfagni, Ranfagni, Ranfagni, Ranfagni, Ranfagni, Razavy, Recami, Recami, Recami, Recami, Recami, Recami, Recami, Rosenbaum, Rybachenko, Schweber, Segard, Shaarawi, Shaarawi, Shaarawi, Smith, Smith, Sokolovski, Sokolovski, Sokolovski, Sommerfeld, Sommerfeld, Spielman, Steinberg, Steinberg, Tsuchiya, V.B. Berestezki, Vedrinski, Vladislav S. Olkhovsky, Wigner, Zamboni Rached, Zamboni Rached, Ziolkowski   +191 more
core   +3 more sources

Kerr nonlinearity enhancement by double tunnelling from quantum dot nanostructure

Results in Physics, 2016
A model of the dynamical equations of the density matrix describes double tunnelling between double quantum dot (QD) system states, this is to study Kerr nonlinearity in QD structure.
B. Al-Nashy, S.M.M. Ameen, Amin H. Al-Khursan   +2 more
doaj   +1 more source