Sanjukta Roy

 

My Research Interests:

      Quantum-optics, Ultra-cold atoms and BEC, Electromagnetically Induced Transparency, Quantum Zeno effect, Optical lattices,  Study of single atom quantum evolution,  Atom-surface interaction

 

Publications:

In Journals: 

1. Expansion dynamics of an array of high density Bose-Einstein condensates produced in a 1D CO2 laser optical lattice, Sanjukta Roy, Saptarishi Chaudhuri and C. S. Unnikrishnan, Eur. Phys. J. D, 49 231 (2008). (Paper)

2. "Bose-Einstein condensation in optical traps and in a 1D optical lattice", Saptarishi Chaudhuri, Sanjukta Roy and C. S. Unnikrishnan, To appear in Current Science (2008).

3.  "Studies on Cold Atoms Trapped in a Quasi-Electrostatic Optical Dipole Trap", Sanjukta Roy, Saptarishi Chaudhuri and C. S. Unnikrishnan, Journal of Physics: Conference Series 80 (2007) 012043. (Paper)

4. "Evaporative Cooling of Atoms to Quantum Degeneracy in an Optical Dipole Trap." Saptarishi     Chaudhuri, Sanjukta Roy and C. S. Unnikrishnan, Journal of Physics: Conference Series 80 (2007) 012036. (Paper)

5. "Reflection of cold atoms from magnetic thin films: From atom optics to measurement of short-range forces" A. K. Mohapatra, S. Chaudhuri, S. Roy, C. S. Unnikrishnan, Eur. Phys. J. D 42, 287–298 (2007). (Paper)

6. “Realization 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). (Paper)

7.  “A Simple and Inexpensive Electronic Wavelength-meter Using a Dual Output Photodiode” Sanjukta Roy, Saptarishi Chaudhuri and C. S. Unnikrishnan, Am. J. Phys. 73 (6), June 2005. (Paper)

8. "Bose-Einstein Condensation of weakly interacting atoms in an Optical dipole trap", Sanjukta Roy, Saptarishi Chaudhuri and C. S. Unnikrishnan, (Submitted to Journal of Optics)

Books and Conference Proceedings:

9. "Bose-Einstein Condensation of weakly interacting atoms in an Optical dipole trap", Sanjukta Roy, Saptarishi Chaudhuri and   C. S. Unnikrishnan, Contemporary Optics and Optoelectronics , Proceedings of XXXIII OSI Symposium on Optics and optoelectronics, Tata McGraw-Hill, New Delhi (2007).

10. Ultra-Cold atoms and Bose-Einstein condensates in Optical Dipole Traps, Sanjukta Roy, Saptarishi Chaudhuri and C. S. Unnikrishnan, to be published in a book on Laser Technology and Applications (2008).

Conferences Presentations:

1. "An intense, cold Rubidium atomic beam based on a 2D+ magneto-optical trap: Experiments, simulation and ultra-fast loading to a 3D-MOT"  Saptarishi Chaudhuri, Sanjukta Roy,  C. S. Unnikrishnan, Poster presentation, 20th International Conference on Atomic Physics (ICAP), 16-21 July 2006, Innsbruck, Austria.

2. "Studies on Cold Atoms Trapped in a Quasi-Electrostatic Optical Dipole Trap", Sanjukta Roy, Saptarishi Chaudhuri and C.S.Unnikrishnan, Poster Presentation, 7th Asian International Seminar
on Atomic and Molecular Physics, 4th to 7th December, 2006, Indian Institute of Technology, Madras (Chennai), India.

3. "Evaporative Cooling of Atoms towards Quantum Degeneracy in an Optical Dipole Trap",  Saptarishi Chaudhuri, Sanjukta Roy and C.S.Unnikrishnan, Poster Presentation, 7th Asian International Seminar on Atomic and Molecular Physics, 4th to 7th December, 2006, Indian Institute of Technology, Madras (Chennai), India.

4. "Measurements on Cold Atoms Trapped in a Quasi-Electrostatic Optical Dipole Trap", Sanjukta Roy, Saptarishi Chaudhuri and C.S.Unnikrishnan, Poster Presentation, XVI National Conference on Atomic and Molecular Physics, Tata Institute of Fundamental Research, Mumbai,
January 08 - 11, 2007
 

5. "Evaporative Cooling of rubidium atoms to Quantum Degeneracy in a crossed Optical Dipole Trap",  Saptarishi Chaudhuri, Sanjukta Roy and C.S.Unnikrishnan, Poster Presentation, XVI National Conference on Atomic and Molecular Physics, Tata Institute of Fundamental Research, Mumbai, January 08 - 11, 2007

6.  “High Efficiency 2D+MOT Source Of Intense Beam Of Cold Rubidium Atoms”   Saptarishi Chaudhuri, Sanjukta Roy and C. S. Unnikrishnan, Poster presentation,  2nd  International Conference on Current Developments in Atomic, Molecular and Optical Physics with Applications CDAMOP, 2006, Delhi University, India.

7.  "Tunneling and Quantum Zeno effect:  Theory and Experiments"  Sanjukta Roy and C. S. Unnikrishnan, Poster Presentation,  XV National Conference on Atomic  and Molecular Physics, 2004.

3  8.  “Design, Construction and Performance of a high flux source of ultra-cold atoms”  S. Chaudhuri, S. Roy, C. S. Unnikrishnan, Poster Presentation, XV National Conference on Atomic  and Molecular Physics, 2004.

9.  “Reflection of Cold atoms from Magnetic Film”  A. K. Mohapatra, S. Chaudhuri, S. Roy, C. S. Unnikrishnan, Poster Presentation, XV National Conference on Atomic  and Molecular Physics, 2004. 

 

Awards/Prizes: 

1. DST Award for “Participation in the 55th Meeting of Nobel Laureates and Students in Lindau, Germany”  (2005).

2. First prize for 'Best Poster Presentation' in 7th Asian International Seminar on Atomic and Molecular Physics, 4th to 7th December, 2006, Indian Institute of Technology, Madras (Chennai), India.

3. "Best Oral Paper Presentation Prize" in XXXIII Optical Society of India Symposium on Optics and Opto-Electronics, Tezpur University, Assam, Dec18-20, 2007.

 

Address for Correspondence:

Sanjukta Roy,

D-418, Dept of High energy Physics (Gravitation)                                                          

Tata Institute of Fundamental Research                                                                             

Homi Bhabha Rd, Colaba

Mumbai-400005,

Maharashtra.

E-mail: sanjukta@mailhost.tifr.res.in

Tel: ++ 91-22-22782683 Extn: 2683
Fax: ++ 91-22-2280-4610, 2280-4611
 

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