24 citations · 58 across the 15 of their papers we have counts for
15 papers
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 Correlation of Spacetime Fluctuations in Laser Interferometers
B. Sharmila, Sander M. Vermeulen, Animesh Datta
Spacetime fluctuations (SFs), a common feature of different proposed gravity models, could be detected using laser interferometers. In the search for SFs, a correspondence between…
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…
Extracting electromagnetic signatures of spacetime fluctuations
B. Sharmila, Sander M. Vermeulen, Animesh Datta
We present a formalism to discern the effects of fluctuations of the spacetime metric on electromagnetic radiation. The formalism works via the measurement of electromagnetic field…
Exact eigenvalue order statistics for the reduced density matrix of a bipartite system
B. Sharmila, V. Balakrishnan, S. Lakshmibala
We consider the reduced density matrix of a bipartite system of dimensionality in a Gaussian ensemble of random, complex pure states of the composite system…
Tomographic entanglement indicators in frequency combs and Talbot carpets
B. Sharmila, S. Lakshmibala, V. Balakrishnan
Recent theoretical investigations on tomographic entanglement indicators have showcased the advantages of the tomographic approach in the context of continuous-variable (CV), spin…
Tomographic entanglement indicators from NMR experiments
B. Sharmila, V. R. Krithika, Soham Pal +3
In recent years, the performance of different entanglement indicators obtained directly from tomograms has been assessed in continuous-variable and hybrid quantum systems. In this…
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…
Tomographic entanglement indicators in multipartite systems
B. Sharmila, S. Lakshmibala, V. Balakrishnan
We assess the performance of an entanglement indicator which can be obtained directly from tomograms, avoiding state reconstruction procedures. In earlier work, we have examined th…
Effect of optimal uncoupling in enhancing synchronization stability in coupled chaotic systems
G. Sivaganesh, B. D. Sharmila, A. Arulgnanam
In this paper, we report a novel approach for studying the effect of optimal uncoupling on the stability of synchronization in coupled chaotic systems. The clipping of phase space…
Estimation of entanglement in bipartite systems directly from tomograms
B. Sharmila, S. Lakshmibala, V. Balakrishnan
We investigate the advantages of extracting the degree of entanglement in bipartite systems directly from tomograms, as it is the latter that are readily obtained from experiments.…
Signatures of nonclassical effects in optical tomograms
B. Sharmila, K. Saumitran, S. Lakshmibala +1
Several nonclassical effects displayed by wave packets subject to generic nonlinear Hamiltonians can be identified and assessed directly from tomograms without attempting to recons…