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Fast and Robust Quantum Information Transfer in Annular and Radial Superconducting Networks
Author(s) -
Kang YiHao,
Shi ZhiCheng,
Huang BiHua,
Song Jie,
Xia Yan
Publication year - 2017
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.201700154
Subject(s) - physics , quantum , adiabatic process , resonator , quantum information , lossy compression , robustness (evolution) , qubit , quantum network , computer science , quantum computer , topology (electrical circuits) , coplanar waveguide , quantum mechanics , mathematics , optoelectronics , biochemistry , chemistry , artificial intelligence , microwave , gene , combinatorics
In this paper, we propose a protocol to achieve fast and robustness quantum information transfer (QIT) in annular and radial superconducting networks, where each quantum node is composed of a superconducting quantum interference device (SQUID) inside a coplanar waveguide resonator (CPWR). The process is based on reversely constructing time‐dependent control Hamiltonian by designing evolution operator. With the protocol, the maximal population of lossy intermediate states and the amplitudes of pulses can be easily controlled by two corresponding control parameters. Therefore, one can design feasible pulses for QIT with great flexibility. Besides, the speed of the QIT here is much faster compared with that with adiabatic QIT. Moreover, numerical simulations show that the protocol still possesses high fidelity when lossy factors and imperfect operations are taken into account. Therefore, the protocol may provide a useful way to manipulate quantum information networks.