Precision & Quantum Measurement laboratory (PQM-lab)
Inter-University Centre for Astronomy and Astrophysics,Pune,India

Selected publications

  1. "Loop Stabilized Improved Transfer Cavity-Based Laser Frequency Stabilization" A. Roy, L. Sharma, S. Panja and S. De, IEEE Journal of Quantum Electronics 58, 1 (2022).
  2. “A novel technique for real-time estimation and compensation of phase-drift of RF signals transmitting through coaxial cables”, H. K. Rathore, A. Roy, Neelam, S. Utreja, Lakhi Sharma, S. De and S. Panja, IEEE Microwave and Wireless Components Lett. 31, 1319 (2021).
  3. “Precise time synchronization and clock comparison through a White Rabbit network-based optical fiber link”, Neelam, M. P. Olaniya, H. Rathore, L. Sharma, A. Roy, S. De, and S. Panja, Radio Science 56, e2020RS007232 (2021).
  4. “A Compact Device for Precise Distribution of Time and Frequency Signal”, Harish Rathore, Neelam, Lakhi Sharma, Atish Roy, Shubham Utreja, S. De, S. Panja, MAPAN-J. Metrol. Soc. India, DOI: 10.1007/s12647-021-00460-2 (2021).
  5. “Studies on Temperature Sensitivity of a White Rabbit Network based Time Transfer link”, Neelam, H. Rathore, L. Sharma, A. Roy, M. P. Olaniya, S. De and S. Panja, MAPAN-J. Metrol. Soc. India, DOI: 10.1007/s12647-021-00461-1 (2021).
  6. “An easy to construct sub-micron resolution imaging system”, Lakhi Sharma, A. Roy, S. Panja and S. De*, Scientific Reports 10, 21796 (2020).
  7. “Atomic flux distribution from a low-divergent dark wall oven” Lakhi Sharma, A. Roy, S. Panja, and S. De, Rev. Sci. Instrum. 90, 053202 (2019).
  8. “An FPGA based all-in-one function generator, lock-in amplifier and auto-relockable PID system”, A. Roy, Lakhi Sharma, I. Chakraborty, V. N. Ojha, and S. De, JINST 14, P05012 (2019).
  9. “Estimation of the ion-trap assisted electrical loads and resulting BBR shift” Lakhi Sharma, A. Roy, S. Panja, V. N. Ojha and S. De, Scientific Reports, 816884 (2018).
  10. “Accurate determination of BBR shift, magic and tuneout wavelengths for the 1S1/2-5D3/2 clock transition in Yb+” A. Roy, S. De, B. Arora, and B. K. Sahoo, J. Phys. B:At. Mol. Opt. Phys. 50 205201 (2017).
  11. “Measuring capacitance and inductance of a helical resonator and improving its quality factor by mutual inductance alteration” – S. Panja, S. De, S.Yadav, Sen Gupta. Rev. Sci. Instrum. 86, 056104 (2015).
  12. “Lifetime determination of the 5d2 3F2 state in barium using trapped atoms” - S. De, U. Dammalapati, and L. Willmann, Phys. Rev. A 91 032517(2015).
  13. “Quenched Binary Bose-Einstein Condensates: spin domain formation and coarsening” – S. De, D. L. Campbell, R. M. Price, A. Putra, B. M.Anderson and I. B. Spielman, Phys. Rev. A 89 033631 (2014).
  14. “Optimal Focusing in Absorption Imaging of Ultra-cold atoms” - A. Putra, D. L. Campbell, R. M. Price, S. De, and I. B. Spielman. Rev. Sci. Instrum. 85013110 (2014).
  15. “Fermion- mediated long-range interactions between bosons stored in an optical lattice” – S. De and I. B. Spielman, Appl. Phys. B: lasers and optics 114 527 (2014).
  16. “Magneto optical trapping of barium” - S. De, U. Dammalapati, K. Jungmann, L. Willmann, Phys. Rev. A 79 041402(R) (2009).
  17. “Isotope shifts of 6s5d 3D-states in neutral Barium” - U. Dammalapati, S. De, K. Jungmann, L. Willmann, Eur. Phys. J D 53, 1 (2009).

PhD thesis

  1. "Laser cooling and trapping of barium ", Subhadeep De, University of Groningen, Netherlands (2008)
  2. "Computations, Design and Instrumentation for Precision Ion Trap Experiment”, Neha Batra, CSIR-NPL, India (2018)
  3. "Developing experimental setup for trapped ion based optical atomic clock”, Atish Roy, CSIR-NPL, India (2019)
  4. "Ion production and optical set-up for single Ytterbium ion trap experiment", Lakhi Sharma, CSIR-NPL, India (2021)

M. Tech thesis

  1. “Field Programmable Gate Array Based Laser Frequency Stabilization: A Low Cost and Portable System” – Anindya Rastogi, CSIR-NPL (2014).
  2. “Computer Controlled DC Power Supply: Digital Voltage Stabilizer” – Ekta Malik, IP University (2014).
  3. “Interfacing Field Programmable Gate Array (FPGA) based Locking Electronics with Optical Experiment” – Anjali Yadav, Amity University (2014).
  4. “Implementation Of Certain Quantum Gate Operations Using Ultra Cold Atoms In Optical Lattices And Super Lattices” – Poonam Pathak and Deepa Bhatt, IIT Delhi (2015). Jointly supervised with Dr. Sankalpa Ghosh at IIT Delhi.