Dynamical symmetry breaking of lambda- and vee-type three-level systems on quantization of the field modes

Pramana

Gautam Gangopadhyay3³  Mihir Ranjan Nath1²  Asoke Kumar Sen2¹  Surajit Sen1² 

[1] Department of Physics, Assam University, Silchar 788 011, India$$;Department of Physics, Guru Charan College, Silchar 788 004, India$$;S.N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake City, Kolkata 700 098, India$$

关键词: Symmetry breaking;    three-level Jaynes-Cummings model;    collapse and revival.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We develop a scheme to construct the Hamiltonians of the lambda-, vee- and cascade-type three-level configurations using the generators of 𝑆𝑈(3) group. It turns out that this approach provides a well-defined selection rule to give different Hamiltonians for each configuration. The lambda- and vee-type configurations are exactly solved with different initial conditions while taking the two-mode classical and quantized fields. For the classical field, it is shown that the Rabi oscillation of the lambda model is similar to that of the vee model and the dynamics of the vee model can be recovered from lambda model and vice versa simply by inversion. We then proceed to solve the quantized version of both models by introducing a novel Euler matrix formalism. It is shown that this dynamical symmetry exhibited in the Rabi oscillation of two configurations for the semiclassical models is completely destroyed on quantization of the field modes. The symmetry can be restored within the quantized models when both field modes are in the coherent states with large average photon number which is depicted through the collapse and revival of the Rabi oscillations.

【 授权许可】

Unknown