dc.contributor.author |
Zander, Claudia
|
|
dc.contributor.author |
Borras, A.
|
|
dc.contributor.author |
Plastino, Angel Ricardo (Angelo)
|
|
dc.contributor.author |
Casas, Montserrat
|
|
dc.date.accessioned |
2013-07-02T13:33:02Z |
|
dc.date.available |
2014-09-30T00:20:04Z |
|
dc.date.issued |
2013-02-12 |
|
dc.description.abstract |
The time needed by a quantum system to reach a state fully distinguishable from the original
one provides a natural way of determining how fast the corresponding dynamical evolution is. This
orthogonality time admits a lower bound, expressible in terms of the energy’s expectation value
and the energy’s standard deviation, that yields a “quantum speed limit”. Composite quantum
systems need entanglement in order to achieve this limit. So far, most studies on the connection
between entanglement and the quantum speed limit have focused on the case of non-interacting
systems. The connection between quantum speed and entanglement is systematically investigated
here for the case of a system of two interacting qubits, taking into consideration all possible initial
states that evolve into an orthogonal one. |
en_US |
dc.description.librarian |
hb2013 |
en_US |
dc.description.sponsorship |
This work was partially supported by the MEC grant FIS2011-23526 (Spain), by the
Projects FQM-2445 and FQM-207 of the Junta de Andalucia, the grant FIS2011-24540 of
the Ministerio de Innovacion y Ciencia (Spain), by the Conselleria d’Educacio, Cultura i
Universitats (CAIB), and by FEDER (EU). |
en_US |
dc.description.uri |
http://www.iop.org/EJ/journal/JPhysA |
en_US |
dc.identifier.citation |
Zander, C, Borras, A, Plastino, AR, Plastino, A & Casas, M 2013, 'Entanglement and the speed of evolution of two interacting qubits', Journal of Physics A- Mathematical and Theoretical, vol. 46, no. 9, pp. 1-19. |
en_US |
dc.identifier.issn |
1751-8113 (print) |
|
dc.identifier.issn |
1751-8121 (online) |
|
dc.identifier.other |
10.1088/1751-8113/46/9/095302 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/21780 |
|
dc.language.iso |
en |
en_US |
dc.publisher |
Institute of Physics |
en_US |
dc.rights |
© 2013 IOP Publishing Ltd. |
en_US |
dc.subject |
Quantum entanglement |
en_US |
dc.subject |
Quantum evolution |
en_US |
dc.subject |
Time-energy uncertainty relations |
en_US |
dc.title |
Entanglement and the speed of evolution of two interacting qubits |
en_US |
dc.type |
Postprint Article |
en_US |