Open AccessModulated light potentials for state manipulation of quasiparticles in ultra-cold Bose gases
Author(s) -
Benjamin Maaß,
Daniel Hartley,
Kurt Busch,
Dennis Rätzel
Publication year - 2022
Publication title -
new journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.584
H-Index - 190
ISSN - 1367-2630
DOI - 10.1088/1367-2630/ac5e17
Subject(s) - physics , quasiparticle , interferometry , ultracold atom , state (computer science) , coupling (piping) , quantum mechanics , field (mathematics) , quantum electrodynamics , atomic physics , mechanical engineering , superconductivity , mathematics , algorithm , computer science , pure mathematics , engineering , quantum
Ensembles of ultra-cold atoms have been proven to be versatile tools for high precision sensing applications. Here, we present a method for the manipulation of the state of trapped clouds of ultra-cold bosonic atoms. In particular, we discuss the creation of coherent and squeezed states of quasiparticles and the coupling of quasiparticle modes through an external cavity field. This enables operations like state swapping and beam splitting which can be applied to realize a Mach–Zehnder interferometer (MZI) in frequency space. We present two explicit example applications in sensing: the measurement of the healing length of the condensate with the MZI scheme, and the measurement of an oscillating force gradient. Furthermore, we calculate fundamental limitations based on parameters of state-of-the-art technology.