One-step implementation of the Rydberg-Rydberg-interaction gate

Shi-Lei Su, Erjun Liang, Shou Zhang, Jing-Ji Wen, Li-Li Sun, Zhao Jin, and Ai-Dong Zhu
Phys. Rev. A 93, 012306 – Published 6 January 2016

Abstract

We propose several schemes for implementing a two-qubit quantum phase gate between two Rydberg atoms. The schemes could be realized in one step without adiabatic passage which depends on the specifical shapes and tailored pulse sequences of the laser fields. When the Rydberg-Rydberg-interaction (RRI) strength and the parameters of the driving fields satisfy some certain conditions, the effective Rabi oscillation between the two-excitation Rydberg state and the ground state would be generated, which is out of the Rydberg blockade regime and essential for our scheme. In addition, the individual addressing of the atoms is not required. And the schemes can work under strong or weak RRI strength. The imperfections induced by the variation of RRI strength and spontaneous emission are discussed through solving the master equation numerically.

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  • Received 21 September 2015
  • Revised 30 November 2015

DOI:https://doi.org/10.1103/PhysRevA.93.012306

©2016 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Shi-Lei Su1,2,3, Erjun Liang3, Shou Zhang1,2,*, Jing-Ji Wen4, Li-Li Sun5, Zhao Jin1,2, and Ai-Dong Zhu1

  • 1Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, People's Republic of China
  • 2Department of Physics, Harbin Institute of Technology, Harbin 150001, People's Republic of China
  • 3School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, People's Republic of China
  • 4College of Foundation Science, Harbin University of Commerce, Harbin 150028, People's Republic of China
  • 5College of Physics, Tonghua Normal University, Tonghua, Jilin 134000, People's Republic of China

  • *szhang@ybu.edu.cn

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Vol. 93, Iss. 1 — January 2016

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