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author:

Ni, J.-H. (Ni, J.-H..) [1] | Zhang, D.-X. (Zhang, D.-X..) [2] | Lv, W.-C. (Lv, W.-C..) [3] | Bin, L. (Bin, L..) [4] | Kang, Y.-H. (Kang, Y.-H..) [5] | Su, Q.-P. (Su, Q.-P..) [6] | Yang, C.-P. (Yang, C.-P..) [7]

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Abstract:

Hybrid W entangled states are essential in quantum information processing, quantum communication, and quantum technology. In this Letter, we propose a simple method to prepare hybrid W entangled states between n superconducting (SC) qubits and n microwave resonators (MRs) in circuit QED. Only two basic operations are needed for the preparation of hybrid W states. The operational time decreases as the number of qubits increases. Since no ancillary cavity is required, the hardware resources for the state preparation are minimized. Because the state preparation does not involve any measurements, the hybrid W entangled states are generated in a deterministic way. Moreover, during the entire preparation, the high-energy levels of the SC qutrits remain unexcited, which greatly reduces decoherence of the SC qutrits. As an example, our numerical simulation demonstrates that high-fidelity preparation of the hybrid W entangled state of three SC qubits and three MRs is feasible within the current circuit QED technique. This method is universal and can be applied to generate hybrid W states of n matter qubits (e.g., atomic qubits, NV center qubits, quantum dot qubits, and magnon qubits) and n photonic qubits in various physical systems. © 2024 Author(s).

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  • [ 1 ] [Ni J.-H.]School of Physics, Hangzhou Normal University, Hangzhou, 311121, China
  • [ 2 ] [Zhang D.-X.]School of Physics, Hangzhou Normal University, Hangzhou, 311121, China
  • [ 3 ] [Lv W.-C.]School of Physics, Hangzhou Normal University, Hangzhou, 311121, China
  • [ 4 ] [Bin L.]Department of Physics, Fuzhou University, Fuzhou, 350002, China
  • [ 5 ] [Kang Y.-H.]School of Physics, Hangzhou Normal University, Hangzhou, 311121, China
  • [ 6 ] [Su Q.-P.]School of Physics, Hangzhou Normal University, Hangzhou, 311121, China
  • [ 7 ] [Yang C.-P.]School of Physics, Hangzhou Normal University, Hangzhou, 311121, China

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Source :

Applied Physics Letters

ISSN: 0003-6951

Year: 2024

Issue: 17

Volume: 125

3 . 5 0 0

JCR@2023

CAS Journal Grade:3

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ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 0

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