Results 31 to 40 of about 1,855,980 (368)

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

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

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

High temperature quantum tunnelling of magnetization and thousand kelvin anisotropy barrier in a Dy2 single-molecule magnet.

Chemical Communications, 2020
We report here a dinuclear DyIII iodine-bridged single-molecule magnet self-assembled by cis/trans coordination chemistry that displays a large anisotropy barrier of ca. 1300 K and a hysteresis opening temperature of 16 K.
Haipeng Wu, Min Li, Zhengqiang Xia, Vincent Montigaud, O. Cador, B. le Guennic, Hongshan Ke, Wenyuan Wang, G. Xie, Sanping Chen, Sheng-li Gao   +10 more
semanticscholar   +1 more source

Tunnelling series in terms of perturbation theory for quantum spin systems [PDF]

, 1999
Considered is quantum tunnelling in anisotropic spin systems in a magnetic field perpendicular to the anisotropy axis. In the domain of small field the problem of calculating tunnelling splitting of energy levels is reduced to constructing the ...
A. K. Zvezdin, D. A. Garanin, E. M. Chudnovsky, G.-H. Kim, I. Ya. Korenblit, M. Enz, O. B. Zaslavskii, V. V. Ulyanov, V. V. Ulyanov   +8 more
core   +2 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

Electrical detection and modulation of magnetism in a Dy-based ferroelectric single-molecule magnet

Nature Communications, 2023
Electrical control of magnetism in single-molecule magnets with peculiar quantum magnetic behaviours has promise for applications in molecular electronics and quantum computing. Nevertheless, such kind of magnetoelectric effects have not been achieved in
Yu-Xia Wang, Dan Su, Yinina Ma, Young Sun, Peng Cheng   +4 more
doaj   +1 more source

Quantum tunneling time [PDF]

American Journal of Physics, 2004
A simple model of a quantum clock is applied to the old and controversial problem of how long a particle takes to tunnel through a quantum barrier. The model has the advantage of yielding sensible results for energy eigenstates and does not require the use of time-dependent wave packets.
Wang, Z. S., Kwek, Leong Chuan, Lai, C. H., Oh, Choo Hiap   +3 more
openaire   +4 more sources

Absorption and Dispersion Properties of a Coupled Asymmetric Double Quantum Dot Molecule–Metal Nanoparticle Structure

Engineering Proceedings, 2023
The interaction of excitons with localized surface plasmons in hybrid nanostructures containing semiconductor quantum dots and metal nanoparticles, under specific conditions, may generate products with collective optical properties that have an abundance
Spyridon G. Kosionis, Emmanuel Paspalakis   +1 more
doaj   +1 more source