Atom‐Mediated Phonon Blockade and Controlled‐Z Gate in Superconducting Circuit System,Annalen Der Physik

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Atom‐Mediated Phonon Blockade and Controlled‐Z Gate in Superconducting Circuit System
Annalen Der Physik ( IF 2.2 ) Pub Date : 2021-04-14 , DOI: 10.1002/andp.202100039
Chengsong Zhao ₁ , Rui Peng ₁ , Zhen Yang ₁ , Shilei Chao ₁ , Chong Li ₁ , Ling Zhou ₁

Affiliation

A scheme to generate phonon blockade in a superconducting Josephson junction circuit system is proposed, where the photon, phonon, and artificial two‐level atom are bound into a tripartite interaction. The phonon blockade in the proposal mediated by the two‐level atom differs from the phonon blockade resulting from the single phonon resonance and the destructive interference between different paths, which can be generated within a weak coupling region and a large range of cavity detuning, even with a large optical dissipation rate. In addition, under certain condition, the unconventional photon blockade can be achieved but the phonon blockade is still maintained. Based on the phonon blockade, it is shown that the controlled‐Z gate (CZ) can be implemented with the tripartite interaction.

中文翻译：

超导电路系统中原子介导的声子封锁和Z控门控

提出了一种在超导约瑟夫逊结电路系统中产生声子阻挡的方案，其中光子，声子和人工二级原子被结合成三方相互作用。提案中的由两个能级原子介导的声子阻断不同于由单声子共振和不同路径之间的破坏性干涉产生的声子阻断，这可能在弱耦合区域和大范围的腔失谐中产生，甚至具有大的光耗率。此外，在一定条件下，可以实现非常规的光子阻挡，但声子阻挡仍然得以维持。基于声子封锁，表明可以通过三方交互来实现受控Z门（CZ）。

更新日期：2021-05-06

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