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Error‐Insensitive 3D Entanglement Gate with Optimal Control of Geometric Evolution
Author(s) -
Niu Wei,
Wu JinLei,
Wang Pan,
Ji Xin
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.202100145
Subject(s) - quantum entanglement , adiabatic process , hamiltonian (control theory) , physics , computation , rabi frequency , geometric phase , quantum computer , quantum mechanics , quantum gate , quantum , topology (electrical circuits) , computer science , algorithm , mathematics , mathematical optimization , laser , combinatorics
By using the counterdiabatic driving method, two‐atom 3D entanglement gates are constructed rapidly based on adiabatic geometric quantum computation (AGQC). The added counterdiabatic Hamiltonian does not introduce additional unaccessible ground‐state coupling, and the shapes and phases of the initial adiabatic classical‐field pulse only need to be modified. By using the optimal control technology, the effect of the control errors of Rabi frequency or detuning is suppressed effectively. Quite specially, with an appropriate choice of optimized parameters, the authors' scheme could be insensitive to these two kinds of errors simultaneously. By combining AGQC with optimal control, the scheme could offer a promising means for constructing fast and robust high‐dimensional quantum entanglement gate.