163 citations · 228 across the 9 of their papers we have counts for
9 papers
Staircase in magnetization and entanglement entropy of spin squeezed condensates
H. M. Bharath, M. S. Chapman, C. A. R. Sá de Melo
Staircases in response functions are associated with physically observable quantities that respond discretely to continuous tuning of a control parameter. A well-known example is t…
Non-Abelian Geometric Phases Carried by the Spin Fluctuation Tensor
H. M. Bharath
The expectation values of the first and second moments of the quantum mechanical spin operator can be used to define a spin vector and spin fluctuation tensor, respectively. The fo…
Kibble-Zurek Mechanism in a Spin-1 Bose-Einstein Condensate
M. Anquez, B. A. Robbins, H. M. Bharath +3
We observe power-law scaling of the temporal onset of excitations with quench speed in the neighborhood of the quantum phase transition between the polar and broken-axisymmetry pha…
Characterizing the energy gap and demonstrating an adiabatic quench in an interacting spin system
T. M. Hoang, M. Anquez, M. J. Boguslawski +3
Spontaneous symmetry breaking occurs in a physical system whenever the ground state does not share the symmetry of the underlying theory, e.g., the Hamiltonian. It gives rise to ma…
Quantum enhanced precision in a collective measurement
H. M. Bharath, Saikat Ghosh
We explore the role of on precision in estimation of a single parameter. Collective measurements are represented by observables which commute wit…
Classical simulation of entangled states
H. M. Bharath, V. Ravishankar
Description of nonclassicality of states has hitherto been through violation of Bell inequality and non-separability, with the latter being a stronger constraint. In this paper, we…
A model independent approach towards resource count and precision limits in a general measurement
H. M. Bharath, Saikat Ghosh
A formulation towards quantifying resource count used in a measurement, that is independent of the model of the measurement dynamics(Quantum/Classical), is considered. For any gene…
Benford's law: A theoretical explanation for base 2
H. M. Bharath
In this paper, we present a possible theoretical explanation for benford's law. We develop a recursive relation between the probabilities, using simple intuitive ideas. We first us…
Classical simulation of partially entangled states
H. M. Bharath, V. Ravishankar
We investigate the possibility of simulating partially entangled two qubit states by separable states of higher spins. First, we show that all partially entangled isotropic states…