Sudden switching in two-state systems
| Autor: | A. Chalastaras, J H McGuire, Lev Kaplan, Dmitry B. Uskov, Kh. Kh. Shakov |
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| Rok vydání: | 2006 |
| Předmět: |
Physics
010304 chemical physics Series (mathematics) State (functional analysis) Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Matrix (mathematics) Qubit Product (mathematics) 0103 physical sciences Range (statistics) Statistical physics Observability 010306 general physics |
| Zdroj: | Journal of Physics B: Atomic, Molecular and Optical Physics. 39:1361-1378 |
| ISSN: | 1361-6455 0953-4075 |
| DOI: | 10.1088/0953-4075/39/6/009 |
| Popis: | 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. Single, double and triple kicks are explicitly considered, and the onset of observability of time ordering is examined. The effects of different order of kicks on the dynamics of the system are studied and compared with effects of time ordering in general. To determine the range of validity of this approach, the effect of using pulses of finite widths for 2s–2p transitions in atomic hydrogen is examined numerically. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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