W states fusion based on the resonant interactions in cavity QED system

Li, Ke

doi:10.1007/s00340-022-07876-x

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…In the field of quantum information processing, there are lots of method for preparing W states have been proposed, such as resonant interaction, [30][31][32] adiabatic process, [33][34][35][36][37][38][39][40][41][42][43] cross-Kerr nonlinearities, [44,45] spin-photon interaction, [46] and fusion DOI: 10.1002/qute.202300140 method. [47][48][49][50] In general, the resonant pulse can drive the system to evolve rapidly, but this method requires precise parameter control and perfect timing, and the fidelity of the ideal state is sensitive to the parameter fluctuations and errors. The adiabatic method can overcome the above-mentioned failing, but it needs a long evolution time.…”

Section: Introductionmentioning

confidence: 99%

Fast Preparation of W States by Designing the Evolution Operators with Rydberg Superatom

Zhang,

Wang,

et al. 2023

Adv Quantum Tech

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W states play an important role in quantum information processing and quantum computing. Here, it proposes a scheme for preparing W states by designing the evolution operators with Rydberg superatoms. It encodes quantum information on the effective energy level of the superatom, and construct shortcuts to adiabatic passages (STAP) by designing the evolution operators. Combined with Quantum Zeno dynamics and STAP, it can prepare three‐particle W states quickly and efficiently. In addition, the Rabi frequency in this scheme can be described as a linear superposition of Gaussian functions, which reduces the difficulty of practical experiment. The numerical simulation shows that the scheme is robust against decoherence, operational imperfection, and noise. At last, it generalizes this scheme to preparation of N‐particle W states.

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