Efficient generation of multiqubit entanglement states using rapid adiabatic passage

• URL: http://arxiv.org/abs/2408.17048v1
• Date: Fri, 30 Aug 2024 07:10:25 GMT
• Title: Efficient generation of multiqubit entanglement states using rapid adiabatic passage
• Authors: Shijie Xu, Xinwei Li, Xiangliang Li, Jinbin Li, Ming Xue,
• Abstract summary: We propose a rapid adiabatic passage scheme to generate entanglement in Rydberg atom-array systems. We demonstrate the generation of two-qubit Bell state and three-qubit W state, via sequential RAP pulses within the Rydberg blockade regime.
• Score: 1.8399976559754367
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: We propose the implementation of a rapid adiabatic passage (RAP) scheme to generate entanglement in Rydberg atom-array systems. This method transforms a product state in a multi-qubit system into an entangled state with high fidelity and robustness. By employing global and continuous driving laser fields, we demonstrate the generation of two-qubit Bell state and three-qubit W state, via sequential RAP pulses within the Rydberg blockade regime. As an illustrative example, applying this technique to alkali atoms, we predict fidelities exceeding 0.9995 for two-qubit Bell and three-qubit W state, along with excellent robustness. Furthermore, our scheme can be extended to generate entanglement between weakly coupled atoms and to create four-qubit Greenberger- Horne-Zeilinger states through spatial correlations. Our approach holds the potential for extension to larger atomic arrays, offering a straightforward and efficient method to generate high-fidelity entangled states in neutral atom systems.

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