Quantum sensing with ultracold simulators in lattice and ensemble systems: a review

TL;DR

This review discusses quantum sensing techniques using ultracold atomic systems in lattice and ensemble configurations, highlighting their potential to surpass classical limits through quantum coherence and entanglement.

Contribution

It synthesizes concepts of quantum sensing in both ensemble and lattice ultracold systems, emphasizing their roles in advancing quantum metrology.

Findings

Quantum coherence enhances sensing precision.

Ultracold lattice systems can surpass standard quantum limits.

Ensemble systems like spin and light-matter systems are key to quantum sensing.

Abstract

Sensing of parameters is an important aspect in all disciplines, with applications ranging from fundamental science to medicine. Quantum sensing and metrology is an emerging field that lies at the cross-roads of quantum physics, quantum technology, and the discipline in which the parameter estimation is to be performed. While miniaturization of devices often requires quantum mechanics to be utilized for understanding and planning of a parameter estimation, quantum-enhanced sensing is also possible that uses paradigmatic quantum characteristics like quantum coherence and quantum entanglement to go beyond the so-called standard quantum limit. The current review hopes to bring together the concepts related to quantum sensing as realized in ensemble systems, like spin ensembles, light-matter systems, and Bose-Einstein condensates, and lattice systems, like those which can be modeled by the Bose- and Fermi-Hubbard models, and quantum spin models.