Dicke model semiclassical dynamics in superradiant dipolar phase in the 'bound luminosity’ state

by Dr Abhik Mukherjee (Physics and Applied Mathematics Unit)

Tuesday 20 Apr 2021, 16:00 → 17:00 Asia/Shanghai

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Abstract

Analytic solution of semiclassical dynamics equations of the Dicke model in a superradiant state is presented. The time dependences of the amplitudes of superradiant bosonic condensate and coherent two-level atomic array in the microwave cavity prove to be expressed via Jacobi elliptic functions of real-time and manifest existence of an adiabatic invariant of motion in the strongly coupled system. The periodic beatings of the photonic and atomic coherent state amplitudes are shifted in time revealing an effect of 'bound luminosity’, when energy stored in the two-level system during ’darkness’ in the cavity is suddenly converted into photonic condensate that ’illuminates’ the cavity for half a period, before it plunges into 'darkness’ again.

Biography

(December 2020-March 2021) Visiting Scientist, Indian Statistical Institute, Kolkata, Physics and Applied Mathematics Unit. Kolkata, India

(April 2019-September 2020) Postdoc, National University of Science and Technology- MISiS, Department of Theoretical Physics and Quantum Technologies, Moscow, Russia

(February 2017-December 2018)  Postdoc, University of Cape Town, Department of Mathematics and Applied Mathematics, Cape Town, South Africa.

2010-2016 Ph.D, Saha Institute of Nuclear Physics, Kolkata, India

2008–2010 M.Sc. (Physics), University of Calcutta, Kolkata

2005–2008 B.Sc. (Physics Honours), St. Xaviers College, University of Calcutta, Kolkata

Division

Condensed Matter

Other information

Vedio Link: https://vshare.sjtu.edu.cn/open/5fa348b1d18c0f168bae15181c43b50b