Generation of entangled states for many multilevel atoms in a thermal cavity and ions in thermal motion

TL;DR

This paper presents a robust scheme for generating entangled states among multi-level atoms and ions in thermal environments, effectively canceling photon-number dependencies and avoiding the need for individual atom addressing.

Contribution

It introduces a novel method that is insensitive to cavity decay and thermal fields, applicable to both atoms and ions without individual addressing.

Findings

Scheme effectively cancels photon-number dependence

Insensitive to cavity decay and thermal field effects

Applicable to atoms and ions in thermal motion

Abstract

We propose a scheme for generating entangled states for two or more multi-level atoms in a thermal cavity. The photon-number dependent parts in the effective Hamiltonian are canceled with the assistant of a strong classical field. Thus the scheme is insensitive to both the cavity decay and the thermal field. The scheme does not require individual addressing of the atoms in the cavity. The scheme can also be used to generate entangled states for many hot multi-level ions.