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Dynamics of the Creation of a Rotating Bose–Einstein Condensation by Two Photon Raman Transition Using a Laguerre–Gaussian Laser Pulse

1
Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
2
Physical Research Laboratory, Ahmedabad 380009, Gujarat, India
3
Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355, Gujarat, India
4
School of Physics, University of Melbourne, Melbourne, VIC 3010, Australia
*
Author to whom correspondence should be addressed.
Current address: INO-CNR BEC Center and Department of Physics, University of Trento, Via Sommarive 14, 38123 Trento, Italy.
Received: 10 January 2021 / Revised: 31 January 2021 / Accepted: 4 February 2021 / Published: 8 February 2021
(This article belongs to the Special Issue Physics of Impurities in Quantum Gases)
We present numerical simulations to unravel the dynamics associated with the creation of a vortex in a Bose–Einstein condensate (BEC), from another nonrotating BEC using two-photon Raman transition with Gaussian (G) and Laguerre–Gaussian (LG) laser pulses. In particular, we consider BEC of Rb atoms at their hyperfine ground states confined in a quasi two dimensional harmonic trap. Optical dipole potentials created by G and LG laser pulses modify the harmonic trap in such a way that density patterns of the condensates during the Raman transition process depend on the sign of the generated vortex. We investigate the role played by the Raman coupling parameter manifested through dimensionless peak Rabi frequency and intercomponent interaction on the dynamics during the population transfer process and on the final population of the rotating condensate. During the Raman transition process, the two BECs tend to have larger overlap with each other for stronger intercomponent interaction strength. View Full-Text
Keywords: Bose–Einstein condensate; Laguerre–Gaussian; Raman transition; cold atoms; light–matter interaction; particle transfer; density pattern Bose–Einstein condensate; Laguerre–Gaussian; Raman transition; cold atoms; light–matter interaction; particle transfer; density pattern
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MDPI and ACS Style

Mukherjee, K.; Bandyopadhyay, S.; Angom, D.; Martin, A.M.; Majumder, S. Dynamics of the Creation of a Rotating Bose–Einstein Condensation by Two Photon Raman Transition Using a Laguerre–Gaussian Laser Pulse. Atoms 2021, 9, 14. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9010014

AMA Style

Mukherjee K, Bandyopadhyay S, Angom D, Martin AM, Majumder S. Dynamics of the Creation of a Rotating Bose–Einstein Condensation by Two Photon Raman Transition Using a Laguerre–Gaussian Laser Pulse. Atoms. 2021; 9(1):14. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9010014

Chicago/Turabian Style

Mukherjee, Koushik; Bandyopadhyay, Soumik; Angom, Dilip; Martin, Andrew M.; Majumder, Sonjoy. 2021. "Dynamics of the Creation of a Rotating Bose–Einstein Condensation by Two Photon Raman Transition Using a Laguerre–Gaussian Laser Pulse" Atoms 9, no. 1: 14. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9010014

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