Abstract
Trapping cold neutral atoms in close proximity to nanostructures has raised a large interest in recent years, pushing the frontiers of cavity-QED and boosting the emergence of the waveguide-QED field of research. The design of efficient dipole trapping schemes in evanescent fields is a crucial requirement and a difficult task. Here we present an open-source Python package for calculating optical trapping potentials for neutral atoms, especially in the vicinity of nanostructures. Given field distributions and for a variety of trap configurations, nanotrappy computes the three-dimensional trapping potentials as well as the trap properties, ranging from trap positions to trap frequencies and state-dependent light shifts. We demonstrate the versatility for various seminal structures in the field, e.g., optical nanofiber, alligator slow-mode photonic-crystal waveguide, and microtoroid. This versatile package facilitates the systematic design of structures and provides a full characterization of trapping potentials with applications to the coherent manipulation of atoms and quantum information science.
Highlights
Integrating cold atoms and nanophotonic devices enables to create original light-matter interfaces
A number of capabilities were demonstrated using cold atoms coupled to the evanescent field of optical nanofibers [4,5,6,7,8,9,10,11,12,13,14,15,16,17,18]
To overcome this difficulty without increasing the powers of the trapping beams, generally limited by the power handling of such devices, a two-color dipole trap was proposed for the Caltech alligator photonic crystal waveguide (APCW) [21], following the ideas implemented with nanofibers
Summary
Integrating cold atoms and nanophotonic devices enables to create original light-matter interfaces. Waveguide-QED platforms have emerged with promises for developing quantum information network capabilities, and as a new paradigm for creating exotic quantum phases of light and matter [3] In this context, a number of capabilities were demonstrated using cold atoms coupled to the evanescent field of optical nanofibers [4,5,6,7,8,9,10,11,12,13,14,15,16,17,18]. In this paper we present an open-source Python package, nanotrappy [28], for computing the state-dependent optical trapping potential for multilevel alkali atoms.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
