Arpita Das (Durham University, QLM)
Exploring Quantum Phenomena: From Light-atom Interaction in Vapour Cell to Ultracold Molecule Formation
In this presentation, I will share my research journey, from studying light-atom interactions to creating ultracold molecules. Throughout my doctoral studies, I delved into quantum interference effects in 87Rb atomic vapour. Utilizing techniques such as electromagnetically induced transparency (EIT), Polarisation rotation, and interferometry, we gained insights into the behaviour of light in coherent media [1–4]. Expanding on this foundation in quantum control, my postdoctoral research focused on the formation of ultracold ground-state 87Rb133Cs molecules in an optical lattice. By identifying optimal transitions for Stimulated Raman Adiabatic Passage (STIRAP), we achieved an impressive 85% efficiency in transferring molecules to their rovibronic ground state [5]. This paves the way for new opportunities in quantum simulations and the precise manipulation of intricate molecular systems.
References:
[1] A. Das, B. C. Das, S. Chakrabarti, D. Bhattacharyya, and S. De, Laser Physics 28, 125205 (2018).
[2] A. Das, B. C. Das, D. Bhattacharyya, S. Chakrabarti, and S. De, Journal of Physics B: Atomic, Molecular and Optical Physics 51, 175502 (2018).
[3] A. Das, B. C. Das, D. Bhattacharyya, and S. De, Journal of Physics B: Atomic, Molecular and Optical Physics 53, 025502 (2020).
[4] A. Das, B. C. Das, D. Bhattacharyya, and S. De, OSA Continuum 4, 105 (2021).
[5] A. Das, P. D. Gregory, T. Takekoshi, L. Fernley, M. Landini, J. M. Hutson, S. L. Cornish, and H.-C. N¨agerl, Sci- Post Phys. 15, 220 (2023).