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arXiv quant-ph/9801023quant-ph
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光晶格中的量子态控制

Quantum-state control in optical lattices

I. H. Deutsch, P. S. Jessen

摘要:

我们研究了在光晶格中制备和相干操纵原子波包的方法,特别着重于远失谐极限下的碱金属原子。我们推导出一个一般的,基础独立的表达的晶格运营商,并表明,它的非对角元素可以定制耦合单独的磁子级的振动流形。利用这些耦合,我们可以以量子相干的方式演化被囚禁原子的态,并通过分辨边带拉曼冷却制备纯量子态。我们利用束缚在光晶格中的原子研究了双势阱中量子隧穿和宏观叠加态的产生。远场共振光学势特别适合于通过势中的良好控制的波动来进行油藏工程,使得原子/晶格系统对于退相干的研究以及经典物理和量子物理之间的联系具有吸引力。

英文摘要:

We study the means to prepare and coherently manipulate atomic wave packets in optical lattices, with particular emphasis on alkali atoms in the far-detuned limit. We derive a general, basis independent expression for the lattice operator, and show that its off-diagonal elements can be tailored to couple the vibrational manifolds of separate magnetic sublevels. Using these couplings one can evolve the state of a trapped atom in a quantum coherent fashion, and prepare pure quantum states by resolved-sideband Raman cooling. We explore the use of atoms bound in optical lattices to study quantum tunneling and the generation of macroscopic superposition states in a double-well potential. Far-off-resonance optical potentials lend themselves particularly well to reservoir engineering via well controlled fluctuations in the potential, making the atom/lattice system attractive for the study of decoherence and the connection between classical and quantum physics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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