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author:

Liu, Sha-Li (Liu, Sha-Li.) [1] | Xie, Qin (Xie, Qin.) [2] | Shan, Wu-Jiang (Shan, Wu-Jiang.) [3] | Ianconescu, Reuven (Ianconescu, Reuven.) [4] | Ran, Du (Ran, Du.) [5] | Xia, Yan (Xia, Yan.) [6] (Scholars:夏岩)

Indexed by:

EI Scopus SCIE

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.

Keyword:

Bipartite entanglement Coupled qubits Dissipative ancilla Lyapunov control

Community:

  • [ 1 ] [Liu, Sha-Li]Yangtze Normal Univ, Sch Elect Informat Engn, Chongqing 408100, Peoples R China
  • [ 2 ] [Xie, Qin]Yangtze Normal Univ, Sch Elect Informat Engn, Chongqing 408100, Peoples R China
  • [ 3 ] [Ran, Du]Yangtze Normal Univ, Sch Elect Informat Engn, Chongqing 408100, Peoples R China
  • [ 4 ] [Shan, Wu-Jiang]Jiangxi Vocat Coll Ind & Engn, Sch Gen Educ, Pingxiang 337055, Peoples R China
  • [ 5 ] [Ianconescu, Reuven]Tel Aviv Univ, Dept Elect Engn Phys Elect, IL-69978 Ramat Aviv, Israel
  • [ 6 ] [Ran, Du]Tel Aviv Univ, Dept Elect Engn Phys Elect, IL-69978 Ramat Aviv, Israel
  • [ 7 ] [Ianconescu, Reuven]Shenkar Coll Engn & Design 12, Anna Frank St 12, Ramat Gan, Israel
  • [ 8 ] [Ran, Du]Fuzhou Univ, Dept Phys, Fuzhou 350116, Peoples R China
  • [ 9 ] [Xia, Yan]Fuzhou Univ, Dept Phys, Fuzhou 350116, Peoples R China

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Source :

QUANTUM INFORMATION PROCESSING

ISSN: 1570-0755

Year: 2022

Issue: 1

Volume: 22

2 . 5

JCR@2022

2 . 2 0 0

JCR@2023

ESI Discipline: PHYSICS;

ESI HC Threshold:55

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: 2

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