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arXiv 1504.04898quant-ph
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利用里德伯原子阻断实现光腔中的集体态合成

Collective state synthesis in an optical cavity using Rydberg atom blockade

Santosh Kumar, Jiteng Sheng, Jonathon A. Sedlacek, Haoquan Fan, James P. Shaffer

摘要:

我们研究了放置在高精细光学腔中的相互作用里德伯原子的相干操纵,以确定性地制备强耦合光-物质系统。考虑了N个相互作用原子的一个共里德堡能级的四能级钻石方案。金刚石的一侧用于使用π脉冲或受激拉曼绝热通过(STIRAP)脉冲将原子激发到集体“超原子”里德堡态。钻石另一侧的上跃迁用于将集体态转移到耦合到光腔场模的状态。由于里德伯能级上原子间的强相互作用,里德伯阻塞机制在腔中原子的确定性量子态合成中起着关键作用。我们用数值模拟表明,可以产生非经典光态,并耦合到腔场的状态是一个集体。我们还研究了不同的衰变机制如何影响这种相互作用的多体系统。我们还分析了我们的系统中的情况下,两个里德伯激发内的封锁量。模拟进行了相应的可实现的高精细光学腔和碱金属原子,如铷的参数。

英文摘要:

We investigate the coherent manipulation of interacting Rydberg atoms placed inside a high-finesse optical cavity for the deterministic preparation of strongly coupled light-matter systems. We consider a four-level diamond scheme with one common Rydberg level for N interacting atoms. One side of the diamond is used to excite the atoms into a collective `superatom' Rydberg state using either π-pulses or stimulated Raman adiabatic passage (STIRAP) pulses. The upper transition on the other side of the diamond is used to transfer the collective state to one that is coupled to a field mode of an optical cavity. Due to the strong interaction between the atoms in the Rydberg level, the Rydberg blockade mechanism plays a key role in the deterministic quantum state synthesis of the atoms in the cavity. We use numerical simulation to show that non-classical states of light can be generated and that the state that is coupled to the cavity field is a collective one. We also investigate how different decay mechanisms affect this interacting many-body system. We also analyze our system in the case of two Rydberg excitations within the blockade volume. The simulations are carried out with parameters corresponding to realizable high-finesse optical cavities and alkali atoms like rubidium.

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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