17 citations · 48 across the 14 of their papers we have counts for
14 papers
Entanglement dynamics via Geometric phases in Trapped-ions
Dharmaraj Ramachandran, Ganesh Hanchanahal, Radhika Vathsan
Trapped-ion systems are a leading platform for quantum computing. The Mølmer-Sørensen (MS) gate is a widely used method for implementing controlled interactions in multipartite sys…
A Sharp Geometric Measure of Entanglement
Dharmaraj Ramachandran, Radhika Vathsan
Despite their elegance and widespread use, the current Geometric Measures (GMs) of entanglement exhibit a significant limitation: they fail to effectively distinguish Local Unitary…
Robust entanglement measure for mixed quantum states
Dharmaraj Ramachandran, Aditya Dubey, Subrahmanyam S. G. Mantha +1
We introduce an entanglement measure, the Modified Bloch Norm (MBN), for finite-dimensional bipartite mixed states, based on the improved Bloch matrix criteria. MBN is demonstrated…
Emergence of Classicality in Stern-Gerlach Experiment via Self-Gravity
Sourav Kesharee Sahoo, Radhika Vathsan, Tabish Qureshi
Emergence of classicality from quantum mechanics, a hotly debated topic, has had no satisfactory resolution so far. Various approaches including decoherence and gravitational inter…
A Riemannian Genuine Measure of Entanglement for Pure States
Dharmaraj Ramachandran, Radhika Vathsan
While several measures exist for entanglement of multipartite pure states, a true entanglement measure for mixed states still eludes us. A deeper study of the geometry of quantum s…
Testing Gravitational Self-interaction via Matter-Wave Interferometry
Sourav Kesharee Sahoo, Ashutosh Dash, Radhika Vathsan +1
The Schrodinger-Newton equation has frequently been studied as a nonlinear modification of the Schrodinger equation incorporating gravitational self-interaction. However, there is…
Aspects of Complementarity and Uncertainty
Radhika Vathsan, Tabish Qureshi
The two-slit experiment with quantum particles provides many insights into the behaviour of quantum mechanics, including Bohr's complementarity principle. Here we analyze Einstein'…
Einstein's Recoiling Slit Experiment, Complementarity and Uncertainty
Tabish Qureshi, Radhika Vathsan
We analyze Einstein's recoiling slit experiment and point out that the inevitable entanglement between the particle and the recoiling-slit was not part of Bohr's reply. We show tha…
Classical and Quantum Mechanics of Anyons
G. Date, M. V. N. Murthy, Radhika Vathsan
We review aspects of classical and quantum mechanics of many anyons confined in an oscillator potential. The quantum mechanics of many anyons is complicated due to the occurrence o…
A Note on Fermion and Gauge Couplings in Field Theory Models for Tachyon Condensation
Dileep P. Jatkar, Subrata Sur, Radhika Vathsan
We study soliton solutions in supersymmetric scalar field theory with a class of potentials. We study both bosonic and fermionic zero-modes around the soliton solution. We study tw…
Stable Solitons in Field Theory Models for Tachyon Condensation
Dileep P. Jatkar, Radhika Vathsan
We study soliton solutions in scalar field theory with a variety of unbounded potentials. A subset of these potentials have Gaussian lump solutions and their fluctuation spectrum i…
Reduction of Anyons to One Dimension and Calogero-Sutherland-type Models
Radhika Vathsan
The two-dimensional anyon system, when reduced to one dimension, yields models related to the Calogero-Sutherland model. One such reduction leads to a new model with a class of exa…
Classical Many-particle Clusters in Two Dimensions
G. Date, M. V. N. Murthy, Radhika Vathsan
We report on a study of a classical, finite system of confined particles in two dimensions with a two-body repulsive interaction. We first develop a simple analytical method to obt…
Some Remarks on the Quantization of Gauge Theories
Radhika Vathsan
The methods of reduced phase space quantization and Dirac quantization are examined in a simple gauge theory. A condition for the possible equivalence of the two methods is discuss…