596 citations · 794 across the 21 of their papers we have counts for
21 papers
Exponential speedup in measuring out-of-time-ordered correlators with a single bit of quantum information
Sreeram PG, Naga Dileep Varikuti, Vaibhav Madhok
Out-of-time-ordered correlators (OTOC) are a quantifier of quantum information scrambling and quantum chaos. We propose an efficient quantum algorithm to measure OTOCs that provide…
Dissipative Quantum Systems and the Heat Capacity Enigma
S. Dattagupta, Jishad Kumar, S. Sinha +1
We present a detailed study of the quantum dissipative dynamics of a charged particle in a magnetic field. Our focus of attention is the effect of dissipation on the low- and high-…
Dissipative dynamics of a Harmonic Oscillator : A non-perturbative approach
Jishad Kumar, S. Sinha, P. A. Sreeram
Starting from a microscopic theory, we derive a master equation for a harmonic oscillator coupled to a bath of non-interacting oscillators. We follow a non-perturbative approach, p…
Low temperature Thermodynamics in the Context of Dissipative Diamagnetism
Jishad Kumar, P. A. Sreeram, Sushanta Dattagupta
We revisit here the effect of quantum dissipation on the much - studied problem of Landau diamagnetism, and analyze the results in the light of the third law of thermodynamics. The…
Effect of intrinsic instability of cantilevers on static mode Atomic Force Spectroscopy
Soma Das, P. A. Sreeram, A. K. Raychaudhuri
We show that the static force spectroscopy curve is significantly modified due to presence of intrinsic cantilever instability. This instability acts in tandem with such instabilit…
A method to quantitatively evaluate Hamaker constant using the jump-into-contact effect in Atomic Force microscopy
Soma Das, P. A. Sreeram, A. K. Raychaudhuri
We find that the jump-into-contact of the cantilever in the atomic force microscope (AFM) is caused by an inherent instability in the motion of the AFM cantilever. The analysis is…