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Quantum Optics and Metrology group
October 16, 2022
Principal Investigator
Sankar Davuluri
Assistant Professor
Birla Institute of Technology and Science-Pilani, Hyderabad Campus.
Figure 1:Generic optomechanical system Figure 2:Generic atom laser interaction system.
In Fig. 1 the cavity field, when reflected from the optomechanical mirror, transfers some of its momentum to the optomechanical mirror. This changes the length of cavity and consequently the optical response of the optomechanical cavity changes. γ and ζ 
are the decay rates of optomechanical mirror and optomechanical cavity, respectively.
In Fig. 2 interaction of input laser with the two-level atom generates coherence in the atom which in turn emits electromagnetic field. γ is the decay rate.
Ph. D students
Sreeshna Subhash
Ph. D project goal: To improve the sensitivity of quantum optical interferometer.
Research topics working on: Quantum correlations, Squeezed light, optomechanically induced transparency, optomechanical bistability, and quantum optical interferometry.
1. Recent work on breaking squeezed light interferometer limits for weak force detection is accepted for publication in Optics Express.
2. Conference proceedings: Using quantum optical restoring force to overcome standard quantum limit
3. Presentations
a) Title: “Enhancing the force sensitivity of squeezed light optomechanical interferometer.”
Summer School on Optics and Photonics: Fundamentals and Applications Indian Institute of Technology Delhi Optics and Photonics Centre and Delhi Chapter, National Academy of Sciences, India (NASI) June 6-24, 2022, IIT Delhi (online).
b) Title: “Improving the sensitivity of quantum optical interferometry”
One day workshop on Research facility training program Osmania University Department of Astronomy In association with DST SERB Under scientific social responsibility August 2, 2022 (In person)
c) Title: Quantum back action nullifying meter to improve the sensitivity of squeezed light optomechanical interferometer.
Student Conference on Optics and Photonics 2022 (SCOP-2022) Physical Research Laboratory, Ahmedabad September 28-30, 2022 (In person).
Title:
Greeshma Gopinath
Ph. D project goal: Optimisation of quantum resources for quantum technologies
Research topics working on: Entanglement, optomechanics, electromagnetically induced transparency, and atom-laser interactions.
1. Recent work on (not yet published) describes a new method to entangle freely propagating spatially separated laser fields.
Masters students
Anish Mandyam (Project intern)
Project aim: To create quantum correlations in laser fields using four-level tripod atomic system.
Rohan, Nithyasree, Garima
Project: Understanding the basics of light-matter interactions and “hopefully” to simulate Young’s double slit like quantum interference in atom-laser interactions.
Sreeshna's games:
Sreeshna is excited about her latest work on optomechanics and tried to build an optical interferometer with hanging mirror. In fact, she succeeded. For a theoretician, I will give it an A+
https://drive.google.com/file/d/1as8Gi3Bt_a2ELGBGv5BJ0n6fZ5cCJVZ6/view?usp=sharing