BHARTI

Hi

I am Bharti, a research student in the Quantum Photonics Laboratory (QPL), Department of Physics, at the Indian Institute of Technology Delhi, New Delhi, India.  I am a theorist and experimentalist studying coherent light-matter interactions in Rubidium vapors. My research focuses on modifying the optical properties of Rubidium vapors by manipulating beam parameters and exploring transitions between subluminal (slow light) and superluminal (fast light) propagation.

Disciplines: Atomic, Molecular and Optical Physics

Publications

Peer-Reviewed Journals:

1.  Bharti & Joyee Ghosh, “Manipulating light through Zeeman EIT in 87Rb vapor: impact of temperature and beam parameters,” Applied Physics B 130, 182 (2024). https://doi.org/10.1007/s00340-024-08320-y2

2.  Bharti & Joyee Ghosh, “Impact of longitudinal magnetic fields on EIT linewidth and dispersive properties in 87Rb vapor,” Journal of Modern Optics 71, 419–426 (2024). https://doi.org/10.1080/09500340.2024.2428970

3.  Bharti & Joyee Ghosh, ”Sub luminal light to super luminal light transition in a double−Λ-system in 87Rb vapor,” Optik, Volume 341, 2025, 172549, ISSN 0030-4026, https://doi.org/10.1016/j.ijleo.2025.172549.

Under Review:

4.  Bharti & Joyee Ghosh, “Room temperature EIT, EIA, and slow light in 87Rb: polarization sensitivity and impact of beam parameters”.

Publications

Conference Proceedings/Presentation

1.      Bharti, Joyee Ghosh, “Zeeman EIT with Transit-time Decay in a Doppler Broadened Λ-Atomic system”, Student Conference on Optics and Photonics (SCOP-2022), PRL (POSTER) 28-30 Sep. 2022, PRL, Ahmedabad, India.

2.   Bharti, and Joyee Ghosh, “Zeeman EIT with transit-time decay in an inhomogeneously broadened -atomic system”, Paper JW5A.14, OSA Frontiers in Optics + Laser Science Conference (FiO LS 2022) (POSTER), 16-20 Oct 2022, New York, USA.

3.  Bharti, and Joyee Ghosh, “Zeeman EIT with transit-time decay in a Doppler-broadened Λ-atomic system”, XLV Symposium of the Optical Society of India (COPaQ 2022), (POSTER) 10-13 Nov 2022, IIT Roorkee, India.

4.   Bharti, and Joyee Ghosh, “Study of EIT width, transmission and group delay in inhomogeneously broadened Λ closed Zeeman EIT system”, APS Division of Atomic, Molecular and Optical Physics Meeting (ORAL) 5-9 June 2023, Spokane, Washington, USA.

5.  Bharti, and Joyee Ghosh, “Zeeman EIT in a non-degenerate Λ-atomic 87Rb vapors,” Paper JTu4A.7, OSA Frontiers in Optics + Laser Science Conference (FiO LS 2023) (POSTER) 9-12 Oct 2023, Seattle, USA.

6.   Bharti, Joyee Ghosh, “Hyperfine EIT in 87Rb: impact of coupling intensity on EIT width”, Student Conference on Optics and Photonics (SCOP-2024), PRL (POSTER) 24-27 Sep. 2024, PRL, Ahmedabad, India.

7.   Bharti, and Joyee Ghosh, “Zeeman-EIT with Transit-Time Decay in 87Rb Vapors”, INAE Annual Convention, IIT Delhi, 2024 (POSTER) 19-21 Dec.2024, IIT Delhi, India.

8.   Bharti, and Joyee Ghosh, “Room temperature Zeeman EIT in a hot vapor of 87Rb  atoms using a D2-line transition,” APS Global Physics Summit 2025 (ORAL) 16-21 Mar 2025, CA, USA.

9.  Bharti, and Joyee Ghosh,“Coherent light-matter interactions using Zeeman-sublevels in room temperature 87Rb  for EIT, EIA, slow and fast light," Student Conference on Optics and Photonics (ORAL), 8-12 Dec. 2025, PRL, Ahmedabad, India.

10.  Bharti, and Joyee Ghosh,“EIT, EIA, and Slow-Fast Light Switching in Room-Temperature 87Rb Vapors”, International Conference on Atomic, Molecular, Nano and Optical Physics (ORAL), 17-19 Dec. 2025, Jawaharlal Nehru University (JNU), New Delhi, India.  

Awards/Fellowships

 2025 - Research Excellence Travel Award (RETA): Received this award to attend and present my research at the APS Global Summit (APS-2025) conference in CA, USA.

 2023 - Research Scholar Travel Award (RSTA): Received this award to attend and present my research at the Frontier in optics (FIO-2023) conference, Seattle, USA.

 2021-2024 - Senior Research Fellowship (CSIR India); Received this fellowship for performing research work during Ph.D. at IIT Delhi, provided by the Govt. of India.

 2019-2021 - Junior Research Fellowship (CSIR India); Received this fellowship for performing research work during Ph.D. at IIT Delhi, provided by the Govt. of India.

 2019 - Graduate Aptitude Test in Engineering (GATE Physics); All India Rank 1198

 2019 - Council of Scientific & Industrial Research (CSIR NET-JRF); All India Rank 153

 2011 - Haryana State Govt. Fellowship; Received this fellowship for doing excellent performance in Matriculation exams and for securing 90%.