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author:

Liu, S.-L. (Liu, S.-L..) [1] | Xie, Q. (Xie, Q..) [2] | Shan, W.-J. (Shan, W.-J..) [3] | Ianconescu, R. (Ianconescu, R..) [4] | Ran, D. (Ran, D..) [5] | Xia, Y. (Xia, Y..) [6]

Indexed by:

Scopus

Abstract:

In this paper, we propose a scheme for speeding up the generation of steady-state entanglement of two interacting qubits by coupling them with an engineered dissipative ancilla. The coupling strength between the target qubits and the ancilla is tailored by state-based Lyapunov control, which vanishes gradually along with the increasing of the fidelity of steady state. The negativity is adopted to measure the bipartite entanglement, which would not be enhanced by such Lyapunov control. In order to speed up and enhance the bipartite entanglement, we further use the non-vanishing engineered coupling. Numerical simulations indicate that the scheme is robust against the fluctuations of the coupling strength and immune to the system parametric errors. The study shows promising performance of speeding up dissipative generation of quantum states with Lyapunov control. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Keyword:

Bipartite entanglement Coupled qubits Dissipative ancilla Lyapunov control

Community:

  • [ 1 ] [Liu, S.-L.]School of Electronic Information Engineering, Yangtze Normal University, Chongqing, 408100, China
  • [ 2 ] [Xie, Q.]School of Electronic Information Engineering, Yangtze Normal University, Chongqing, 408100, China
  • [ 3 ] [Shan, W.-J.]School of General Education, Jiangxi Vocational College of Industry and Engineering, Pingxiang, 337055, China
  • [ 4 ] [Ianconescu, R.]Department of Electrical Engineering Physical Electronics, Tel Aviv University, Ramat Aviv, 69978, Israel
  • [ 5 ] [Ianconescu, R.]Shenkar College of Engineering and Design 12, Anna Frank St. 12, Ramat Gan, Israel
  • [ 6 ] [Ran, D.]School of Electronic Information Engineering, Yangtze Normal University, Chongqing, 408100, China
  • [ 7 ] [Ran, D.]Department of Electrical Engineering Physical Electronics, Tel Aviv University, Ramat Aviv, 69978, Israel
  • [ 8 ] [Ran, D.]Department of Physics, Fuzhou University, Fuzhou, 350116, China
  • [ 9 ] [Xia, Y.]Department of Physics, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address:

  • [Ran, D.]Department of Physics, China

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Source :

Quantum Information Processing

ISSN: 1570-0755

Year: 2023

Issue: 1

Volume: 22

2 . 2

JCR@2023

2 . 2 0 0

JCR@2023

ESI HC Threshold:30

JCR Journal Grade:1

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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