Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Shakov, Kh. Kh."'
Autor:
McGuire, J. H., Kaplan, L., Shakov, Kh. Kh., Chalastaras, A., Smith, A. M., Godunov, A., Schmidt-Böcking, H., Uskov, D.
Time ordering may be defined by first defining the limit of no time ordering (NTO) in terms of a time average of an external interaction, V(t). Previously, time correlation was defined in terms of a similar limit called the independent time approxima
Externí odkaz:
http://arxiv.org/abs/quant-ph/0512254
The behavior of simply pulsed qubits (quantum systems with two linearly independent states) may be characterized by the energy difference $\Delta E$ between the two states of the qubit and by an external stimulating potential $V(t)$ that causes trans
Externí odkaz:
http://arxiv.org/abs/quant-ph/0507138
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 39 (2006) 1361-1378
Analytic solutions are developed for two-state systems (e.g. qubits) strongly perturbed by a series of rapidly changing pulses, called `kicks'. The evolution matrix may be expressed as a time ordered product of evolution matrices for single kicks. Si
Externí odkaz:
http://arxiv.org/abs/quant-ph/0503086
Publikováno v:
Phys. Rev. A 70, 063401 (2004)
We examine time ordering effects in strongly, suddenly perturbed two-state quantum systems (kicked qubits) by comparing results with time ordering to results without time ordering. Simple analytic expressions are given for state occupation amplitudes
Externí odkaz:
http://arxiv.org/abs/quant-ph/0406177
We examine how time ordering works in quantum mechanics and in classical mechanics.
Comment: 13 pages, 3 figures
Comment: 13 pages, 3 figures
Externí odkaz:
http://arxiv.org/abs/quant-ph/0312179
We find conditions required to achieve complete population transfer, via coherent population trapping, from an initial state to a designated final state at a designated time in a degenerate $n$-state atom, where transitions are caused by an external
Externí odkaz:
http://arxiv.org/abs/quant-ph/0308015
Autor:
Shakov, Kh. Kh., McGuire, J. H.
Publikováno v:
Physical Review A 67, 033405 (2003)
We consider the time evolution of the occupation probabilities for the 2s-2p transition in a hydrogen atom interacting with an external field, V(t). A two-state model and a dipole approximation are used. In the case of degenerate energy levels an ana
Externí odkaz:
http://arxiv.org/abs/quant-ph/0306160
We find conditions required to achieve complete population transfer, via coherent population trapping, from an initial state to a designated final state at a designated time in a degenerate 3-level atom, where transitions are caused by an external in
Externí odkaz:
http://arxiv.org/abs/quant-ph/0306157
We find a set of conditions to achieve complete population transfer, via coherent population trapping, from an initial state to a designated final state at a designated time in a degenerate n-state atom, where the transitions are caused by an externa
Externí odkaz:
http://arxiv.org/abs/quant-ph/0306022
Autor:
Godunov, A. L., McGuire, J. H., Tolmanov, S. G., Shakov, Kh. Kh., Do¨rner, R., Schmidt-Bo¨cking, H., Dreizler, R. M.
Publikováno v:
AIP Conference Proceedings; 2001, Vol. 576 Issue 1, p185, 4p