Long-lived entanglement of two multilevel atoms in a waveguide

2017/05/31 by Paolo Facchi, Saverio Pascazio, Francesco V. Pepe +2 · 14 citations
Computer Science · Mathematics · Physics and Astronomy · #Multipartite entanglement #Photon #Photon entanglement #Quantum Electrodynamics and Casimir Effect #Quantum Information and Cryptography #Quantum entanglement #Spectral Theory in Mathematical Physics #Squashed entanglement #Upper and lower bounds #W state #Waveguide #quant-ph

paper · pdf · doi:10.1088/2399-6528/aaae9f

published in Journal of Physics Communications 2(3), 035006 (IOP Publishing) · 6 pages, 1 figure

openalex created_date 2017/05/19 · arxiv created 2017/06/10 · openalex publication_date 2018/02/12 · arxiv updated 2018/03/02 · openalex updated_date 2026/08/05

Abstract

We study the presence of nontrivial bound states of two multilevel quantum emitters and the photons propagating in a linear waveguide, when the emitters can be modeled as harmonic oscillators. We characterize the conditions for the existence of such states and determine their general properties, focusing in particular on the entanglement between the two emitters, that increases with the number of excitations. We discuss the relevance of our results for entanglement preservation and generation by spontaneous relaxation processes. We finally introduce a perturbative method for determining the existence of long-lived states, for general level spacings and couplings.

Citations

• Observation of Cavity-Enhanced Single-Atom Spontaneous Emission
• Manipulating quantum entanglement with atoms and photons in a cavity
• Optical Interface Created by Laser-Cooled Atoms Trapped in the Evanescent Field Surrounding an Optical Nanofiber
• Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
• Inhibited Spontaneous Emission by a Rydberg Atom
• Dynamics of spontaneous emission in a single-end photonic waveguide