Research interests:
Quantum Technologies with ultra-cold Rydberg atoms
Ultra-cold quantum gases in optical lattices
Few-body physics
Anderson localisation with ultra-cold quantum gases in disordered potentials
Present position:
Associate Professor II
Light and Matter Physics (LAMP) Group
Raman Research Institute,
Bangalore
Research positions:
1. European Laboratory for Non-linear Spectroscopy and Dipartimento di Fisica e Astronomia, Florence, Italy ,
ERC Post-Doctoral Researcher (2011-2013)
Advisor: Prof. M. Inguscio, and Prof. G. Modugno
Area of Study: Efimov Physics with ultra-cold atoms, Experiment on Entanglement and Disorder with Bose-Einstein condensates
2. Laboratoire Kastler Brossel, Ecole Normale Superieure, Paris
IFRAF Post-Doctoral Researcher (2008-2010)
Advisor: Prof. Claude Cohen-Tannoudji (Nobel Laureate, Physics 1997) and Prof. Michele Leduc
Area of Study: Real-time dynamics of Superfluid to Mott-Insulator transition in metastable Helium atoms.
3. Laboratoire Charles Fabry Instut d'Optique, Palaiseau, France
CNRS Post-Doctoral Researcher (Sept 2010 -Dec 2010)
Advisor: Prof. Phillipe Grangier
Area of Study: Single-photon non-linearities (ERC project DELPHI: Deterministic Logical Photon-Photon Interactions)
Education:
Ph.D, Physics, Tata Institute of Fundamental Research, Mumbai, India (2008),
Thesis Topic: Ultra-cold atoms and Bose-Einstein Condensate in a 1D Quasi-Electrostatic Optical Lattice
Area of Study: Mean-field dynamics of Bose-Einstein Condensates in Optical lattices.
Thesis Advisor: Prof. C. S. Unnikrishnan
M.Sc, Physics, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India, 2001.
B.Sc, Physics, Lady Brabourne College, University of Calcutta, Kolkata, India 1999,
Selected Publications:
In Refereed Journals:
1. “ Test of the universality of the three-body Efimov parameter at narrow Feshbach resonances”, Sanjukta Roy, Manuele Landini, Andreas Trenkwalder, Giulia Semeghini, Giacomo Spagnolli, Andrea Simoni, Marco Fattori, Massimo Inguscio and Giovanni Modugno, Phys. Rev. Lett. 111, 053202 (2013) (Selected as Editor’s suggestion letter and highlighted in Physics section of APS))
2. “Measurement of the mobility edge for 3D Anderson localization”, G. Semeghini, M. Landini, P. Castilho, S. Roy, A. Trenkwalder, G. Spagnolli, M. Fattori, M. Inguscio and G. Modugno, Nature Physics 11, 554 (2015) (Highlighted in Nature Physics: News and Views).
3. "Fast-loaded dual-species magneto-optical trap of cold sodium and potassium atoms with light-assisted inter-species interaction" Sagar Sutradhar, Anirban Misra, Gourab Pal, Sayari Majumder, Sanjukta Roy, Saptarishi Chaudhuri, AIP Advances 13 (6) (2023). (Selected as Editor's pick and featured article on the Journal cover page, Highlighted By the Department of Science and Technology, India as well as prominent Newspapers: Times of India, The Hindu)
4. “Doppler-Enhanced Quantum Magnetometry with Thermal Rydberg atoms”, Shovan Kanti Barik, Silpa B S, M Venkat Ramana, Shovan Dutta, and Sanjukta Roy, New J. Phys. 26 073036 (2024). Article (Highlighted by Department of Science and Technology, India) Media reports: Press Information Bureau, India Today, The Hindu, ET Government
5. "Transition frequency measurement of highly excited Rydberg states of 87Rb for a wide range of principal quantum numbers", Silpa B S, Shovan Kanti Barik, Saptarishi Chaudhuri, and Sanjukta Roy, Optics Continuum 1 (5), 1176-1192 (2022). Highlighted by Department of Science and Technology (DST), India
6. "Measurements and analysis of response function of cold atoms in optical molasses", Subhajit Bhar, Maheswar Swar, Urbashi Satpathi, Supurna Sinha, Rafael Sorkin, Saptarishi Chaudhuri, Sanjukta Roy,
Optics Continuum 1 (2), 171-188 (2022).
7. "Detection of spin coherence in cold atoms via Faraday rotation fluctuations", Maheswar Swar, Dibyendu Roy, Subhajit Bhar, Sanjukta Roy, and Saptarishi Chaudhuri, Phys. Rev. Research 3, 043171 (2021). Highlighted by Department of Science and Technology (DST), India
8. “Measurements of spin properties of atomic systems in and out of equilibrium via noise spectroscopy”, Maheswar Swar, Dibyendu Roy, Dhanalakshmi D, Saptarishi Chaudhuri, Sanjukta Roy, and Hema Ramachandran, Optics Express 26, 32168 (2018). (Highlighted in Research matters: Spinning our way into the world of atoms)
9. “Direct evaporative cooling of 39K atoms to Bose-Einstein condensation”, M. Landini, S. Roy, G. Roati, A. Simoni, Giovanni Modugno, Massimo Inguscio, Marco Fattori, Phys. Rev. A, 86, 033421 (2012).
10. “Sub-Doppler laser cooling of potassium atoms”, M. Landini, S. Roy, L. Carcagni, D. Trypogeorgos, M. Fattori, M. Inguscio , G. Modugno, Phys. Rev. A, 84, 043432 (2011).
11. “Realisation of an intense cold Rb atomic beam based on a 2D+ magneto-optical trap: Experiments and comparison with simulations.”, Saptarishi Chaudhuri, Sanjukta Roy and C. S. Unnikrishnan, Phys. Rev. A 74, 023406 (2006).
12. “Bose-Einstein condensation in optical traps and in a 1D optical lattice”, Saptarishi Chaudhuri, Sanjukta Roy and C. S. Unnikrishnan, Current Science, 95, 1026 (2008). (Highlighted on cover page)
Books authored:
“Ultra-cold Atoms and BEC in a 1D Quasi-Electrostatic Optical Lattice: Basic concepts, Methods and Experiments”, Sanjukta Roy, LAP LAMBERT Academic Publishing, ISBN-10: 3843353557 (October 5, 2010)
Professional Activities and Affiliation:
1. Referee/Adjudicator: New Journal of Physics, Quantum Science and Technology, Optics Express, Journal of Physics B: Atomic, Molecular and Optical Physics, JOSA B, Journal of Physics A: Mathematical and Theoretical, Physica Scripta, European Journal of Physics (Refereed >100 papers).
2. Review Committee member in the Nomination and Selection Process of Young Scientists for the 73rd Lindau Nobel Laureate Meeting (Physics) held in Lindau, Germany in July 2024.
3. Moderator for two Open Exchange sessions with Nobel Laureates Serge Haroche and Sir Anthony J. Leggett at the 70th Lindau Nobel Laureate meeting (2021).
4. Review Committee member for research presentations by Young Scientists for the Online Science days organised by the Lindau Nobel Laureate meetings (2020).
5. Review Committee member for research presentations by Lindau participants at the 69th Lindau Nobel Laureates meeting, Lindau, Germany (2019).
6. Member of the Indian Society of Atomic and Molecular Physics.
Contact:
Dr. Sanjukta Roy
Light and Matter Physics Group
Raman Research Institute
C. V. Raman Avenue
Sadashivanagar
Bengaluru - 560 080
INDIA.
email: sanjukta@rri.res.in