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篇目详细内容 |
【篇名】 |
Quantum dynamics in ultracold atomic physics |
【刊名】 |
Frontiers of Physics |
【刊名缩写】 |
Front. Phys |
【ISSN】 |
2095-0462 |
【EISSN】 |
2095-0470 |
【DOI】 |
10.1007/s11467-011-0232-x |
【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
【出版年】 |
2012 |
【卷期】 |
7
卷1期 |
【页码】 |
16-30
页,共
15
页 |
【作者】 |
Qiong-Yi He;
Margaret D. Reid;
Bogdan Opanchuk;
Rodney Polkinghorne;
Laura E. C. Rosales-Zá;
rate;
Peter D. Drummond;
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【关键词】 |
quantum; dynamics; atomic; ultracold; collisions; entanglement; phase-space |
【摘要】 |
We review recent developments in the theory of quantum dynamics in ultracold atomic physics, including exact techniques and methods based on phase-space mappings that are applicable when the complexity becomes exponentially large. Phase-space representations include the truncated Wigner, positive-P and general Gaussian operator representations which can treat both bosons and fermions. These phase-space methods include both traditional approaches using a phase-space of classical dimension, and more recent methods that use a non-classical phase-space of increased dimensionality. Examples used include quantum Einstein–Podolsky–Rosen (EPR) entanglement of a four-mode BEC, time-reversal tests of dephasing in single-mode traps, BEC quantum collisions with up to 106 modes and 105 interacting particles, quantum interferometry in a multi-mode trap with nonlinear absorption, and the theory of quantum entropy in phase-space. We also treat the approach of variational optimization of the sampling error, giving an elementary example of a nonlinear oscillator. |
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