Quantum-state control in optical lattices
Quantum-state control in optical lattices
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DOI：
10.1103/physreva.57.1972
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发表时间：
1998-03-01
影响因子：
2.9
通讯作者：
Jessen, PS
中科院分区：
文献类型：
--
作者：
Deutsch, IH;Jessen, PS
我们研究了在光学晶格中制备和相干操纵原子波包的方法，特别强调了碱金属原子的远失谐极限。我们推导出一个一般的，独立于基底的晶格势算子的表达式，并表明其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。我们探索了利用束缚在光学晶格中的原子来研究双势阱中的量子隧穿和宏观叠加态的产生。远离共振的光学势通过良好控制的势波动而特别适合于油藏工程，使原子晶格系统对于退相干以及经典物理和量子物理之间的联系的研究具有吸引力。
We study the means of preparing and coherently manipulating atomic wave packets in optical lattices, with particular emphasis on alkali-metal atoms in the far-detuned limit. We derive a general, basis-independent expression for the lattice potential 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.