4 papers · 1 filter
Optimal Waveforms for Dipole Moment Estimation with Coherent States
Karthik Chinni, Nicolás Quesada
We investigate quantum sensing for spectroscopy in a system consisting of a two-level atom coupled to a continuum of modes. We focus on optimizing the pulse shape of a coherent sta…
Beyond the parametric approximation: pump depletion, entanglement and squeezing in macroscopic down-conversion
Karthik Chinni, Nicolás Quesada
We study the dynamics of the pump mode in the down-conversion Hamiltonian using the cumulant expansion method, perturbation theory, and the full numerical simulation of systems wit…
Probing scrambling and operator size distributions using random mixed states and local measurements
Philip Daniel Blocher, Karthik Chinni, Sivaprasad Omanakuttan +1
The dynamical spreading of quantum information through a many-body system, typically called scrambling, is a complex process that has proven to be essential to describe many proper…
The effect of chaos on the simulation of quantum critical phenomena in analog quantum simulators
Karthik Chinni, Pablo M. Poggi, Ivan H. Deutsch
We study how chaos, introduced by a weak perturbation, affects the reliability of the output of analog quantum simulation. As a toy model, we consider the Lipkin-Meshkov-Glick (LMG…