Robust entanglement
| Autor: | Christian F. Roos, W. Hänsel, Christoph Becher, Rainer Blatt, M. Riebe, Hartmut Häffner, J. Benhelm, M. Chwalla, T. Körber, Umakant D. Rapol, Ferdinand Schmidt-Kaler |
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| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Applied Physics B. 81:151-153 |
| ISSN: | 1432-0649 0946-2171 |
| DOI: | 10.1007/s00340-005-1917-z |
| Popis: | It is common belief among physicists that entangled states of quantum systems loose their coherence rather quickly. The reason is that any interaction with the environment which distinguishes between the entangled sub-systems collapses the quantum state. Here we investigate entangled states of two trapped Ca$^+$ ions and observe robust entanglement lasting for more than 20 seconds. |
| Databáze: | OpenAIRE |
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