Quantum pump for counter-circulations in a spinor Bose-Einstein condensate

TL;DR

This paper introduces an efficient quantum pump scheme for generating counter-circulations in spinor Bose-Einstein condensates, applicable to various quantum states and enhancing measurement protocols.

Contribution

It presents a novel, experimentally feasible method for inducing quantum circulations and counter-circulations in spinor BECs, including non-classical states, with applications in quantum sensing.

Findings

Scheme is compatible with current experimental setups.

Effective for non-classical atomic states like entangled and squeezed states.

Enhances measurement sensitivity for spatial interference and rotation.

Abstract

We propose a pump scheme for quantum circulations, including counter-circulations for superposition states, of a spinor Bose-Einstein condensate. Our scheme is efficient and can be implemented within current experimental technologies and setups. It remains valid for non-classical atomic states, such as pseudo-spin squeezed states and maximal entangled N-GHZ or NooN states. Moreover, it is capable of transforming several enhanced sensing protocols relying on reduced fluctuations from quantum correlation and entanglement of atomic internal states to enhanced measurement of spatial interference and rotation.