Coherent control of mesoscopic superpositions in a diatomic molecule

TL;DR

This paper explores phase-controlled wave packets in diatomic molecules to generate mesoscopic superpositions, enabling sub-Planck scale structures and enhanced quantum metrology at smaller revival times.

Contribution

It introduces a novel method for creating and controlling mesoscopic superpositions in diatomic molecules for improved quantum measurement precision.

Findings

Identification of optimal states for high-precision parameter estimation

Demonstration of sub-Planck scale structures at reduced revival times

Control of interference structures via phase tailoring

Abstract

A phase controlled wave packet, recently used in experiment of wave packet interferometry of adiatomic molecule, is investigated to obtain mesoscopic superposition structures, useful in quantum metrology. This analysis provides a new way of obtaining sub-Planck scale structures at smaller time scale of revival dynamics. We study a number of situations for delineating the smallest interference structures and their control by tailoring the relative phase between two subsidiary wave packets. We also find the most appropriate state, so far, for high precision parameter estimation in a system of diatomic molecule.