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Estimating spacetime fluctuation strength in SU(1,1) and SU(2) interferometers
B. Sharmila
High-precision laser interferometers are commonly used to search for signatures of random spacetime fluctuations, in an attempt to understand the fundamental nature of gravity. Con…
Signatures of a gravitational quantum vacuum on dynamics of massive particles
Aaron R. Malcolm, Zhi-Wei Wang, B. Sharmila +1
We study the interaction of two massive particles with a quantised gravitational field in its vacuum state using two different position observables: (i) a frame-dependent coordinat…
Detecting quantum vacuum fluctuations of the electromagnetic field
Aaron Malcolm, B. Sharmila, Zhi-Wei Wang +1
Quantum vacuum fluctuations of the electromagnetic field result in two signatures on a harmonically trapped charged particle: a shift from the natural trap frequency and generation…
A Cooper-pair beam splitter as a feasible source of entangled electrons
B. Sharmila, F. M. Souza, H. M. Vasconcelos +1
We investigate the generation of an entangled electron pair emerging from a system composed of two quantum dots attached to a superconductor Cooper pair beam splitter. We take into…
Signatures of nonclassical effects in tomograms
B. Sharmila
The thesis showcases the importance of tomograms in quantifying nonclassical effects such as wavepacket revivals, squeezing, and quantum entanglement in continuous-variable, hybrid…
Signatures of avoided energy-level crossings in entanglement indicators obtained from quantum tomograms
B. Sharmila, S. Lakshmibala, V. Balakrishnan
Extensive theoretical and experimental investigations on multipartite systems close to an avoided energy-level crossing reveal interesting features such as the extremisation of ent…