中国物理B ›› 2019, Vol. 28 ›› Issue (1): 13202-013202.doi: 10.1088/1674-1056/28/1/013202

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Properties of collective Rabi oscillations with two Rydberg atoms

Dan-Dan Ma(马丹丹), Ke-Ye Zhang(张可烨), Jing Qian(钱静)   

  1. Quantum Institute for Light and Atoms, School of Physics and Material Science, East China Normal University, Shanghai 200062, China
  • 收稿日期:2018-09-02 修回日期:2018-10-23 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: Jing Qian E-mail:jqian1982@gmail.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474094, 11104076, and 11574086), the Science and Technology Commission of Shanghai Municipality, China (Grant Nos. 18ZR1412800 and 16QA1401600), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20110076120004).

Properties of collective Rabi oscillations with two Rydberg atoms

Dan-Dan Ma(马丹丹), Ke-Ye Zhang(张可烨), Jing Qian(钱静)   

  1. Quantum Institute for Light and Atoms, School of Physics and Material Science, East China Normal University, Shanghai 200062, China
  • Received:2018-09-02 Revised:2018-10-23 Online:2019-01-05 Published:2019-01-05
  • Contact: Jing Qian E-mail:jqian1982@gmail.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474094, 11104076, and 11574086), the Science and Technology Commission of Shanghai Municipality, China (Grant Nos. 18ZR1412800 and 16QA1401600), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20110076120004).

摘要:

Motivated by experimental advances that the collective excitation of two Rydberg atoms was observed, we provide an elaborate theoretical study for the dynamical behavior of two-atom Rabi oscillations. In the large-intermediate-detuning case, the two-photon Rabi oscillation is found to be significantly affected by the strength of the interatomic van der Waals interaction. With a careful comparison of the exact numbers and values of the oscillation frequency, we propose a new way to determine the strength of excitation blockade, agreeing well with the previous universal criterion for full, partial, and no blockade regions. In the small-intermediate-detuning case, we find a blockade-like effect, but the collective enhancement factor is smaller than √2 due to the quantum interference of double optical transitions involving the intermediate state. Moreover, a fast two-photon Rabi oscillation in ns timescale is manifested by employing intense lasers with an intensity of ~MW/cm2, offering a possibility of ultrafast control of quantum dynamics with Rydberg atoms.

关键词: Rydberg atoms, collective excitation, Rabi oscillation, excitation blockade

Abstract:

Motivated by experimental advances that the collective excitation of two Rydberg atoms was observed, we provide an elaborate theoretical study for the dynamical behavior of two-atom Rabi oscillations. In the large-intermediate-detuning case, the two-photon Rabi oscillation is found to be significantly affected by the strength of the interatomic van der Waals interaction. With a careful comparison of the exact numbers and values of the oscillation frequency, we propose a new way to determine the strength of excitation blockade, agreeing well with the previous universal criterion for full, partial, and no blockade regions. In the small-intermediate-detuning case, we find a blockade-like effect, but the collective enhancement factor is smaller than √2 due to the quantum interference of double optical transitions involving the intermediate state. Moreover, a fast two-photon Rabi oscillation in ns timescale is manifested by employing intense lasers with an intensity of ~MW/cm2, offering a possibility of ultrafast control of quantum dynamics with Rydberg atoms.

Key words: Rydberg atoms, collective excitation, Rabi oscillation, excitation blockade

中图分类号:  (Rydberg states)

  • 32.80.Ee
32.80.Rm (Multiphoton ionization and excitation to highly excited states) 32.80.Qk (Coherent control of atomic interactions with photons) 32.10.-f (Properties of atoms)