Generation of N‐particle W State with Trapped Λ‐Type Ions by Transitionless Quantum Driving,Annalen Der Physik

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Generation of N‐particle W State with Trapped Λ‐Type Ions by Transitionless Quantum Driving
Annalen Der Physik ( IF 2.2 ) Pub Date : 2021-01-19 , DOI: 10.1002/andp.202000526
Yang Liu _{1,

2} , Zhi‐Cheng Shi _{1,

2} , Jie Song ₃ , Yan Xia _{1,

2}

Affiliation

An efficient scheme to generate multiparticle W state based on transitionless quantum driving (TQD) with trapped ions is proposed. In the TQD scheme, the effective Hamiltonian can be obtained with the help of quantum Zeno dynamics and large off‐resonance condition, and the multiparticle W state can be generated with high fidelity. The influence of decoherence induced by the ionic spontaneous emission and the ambient heating, and the sensitivity of the TQD scheme to some experimental errors are discussed by numerical simulation. The result demonstrates that the TQD scheme is faster than that only via the fractional stimulated Raman adiabatic passage and robust against decoherence and operation imperfection.

中文翻译：

通过无跃迁量子驱动产生具有陷阱Λ-型离子的N粒子W态

提出了一种基于捕获离子的无过渡量子驱动（TQD）生成多粒子W态的有效方案。在TQD方案中，可以借助量子芝诺动力学和大的非共振条件获得有效的哈密顿量，并可以高保真度生成多粒子W态。通过数值模拟讨论了离子自发辐射和环境加热引起的退相干的影响，以及TQD方案对某些实验误差的敏感性。结果表明，TQD方案比仅通过分数受激拉曼绝热通道更快，并且对退相干和操作缺陷具有鲁棒性。

更新日期：2021-03-11

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