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Distinguishment of Greenberger–Horne–Zeilinger States in Rydberg Atoms via Noncyclic Geometric Quantum Computation
Author(s) -
Guo FuQiang,
Zhu XiaoYu,
Yan LeiLei,
Feng Mang,
Su ShiLei
Publication year - 2021
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.202100057
Subject(s) - rydberg formula , quantum entanglement , quantum computer , qubit , greenberger–horne–zeilinger state , physics , quantum mechanics , computation , robustness (evolution) , bell state , quantum , protocol (science) , computer science , w state , algorithm , chemistry , medicine , ion , biochemistry , alternative medicine , pathology , gene , ionization
Since quantum entanglement plays a crucial role in quantum information processing, analyzing entangled states is indispensable for practical applications. Here a simple and direct protocol to distinguish arbitrary N ‐qubit Greenberger–Horne–Zeilinger (GHZ) states by novel nonadiabatic noncyclic geometric quantum computation using Rydberg atoms is put forward. The Bell states can also be distinguished completely using this way. The protocol is justified by numerical simulation for Bell states and N ‐qubit GHZ states, which evaluates the robustness and shows gratifying results. In addition, the idea is flexible, that is, available in any platform. Due to its simplicity and easy operation, the scheme would be very useful in quantum information science both theoretically and experimentally.