Bound states and entanglement generation in waveguide quantum electrodynamics

Facchi, Paolo; Kim, M.S.; Pascazio, Saverio; Pepe, Francesco V.; Pomarico, Domenico; Tufarelli, Tommaso

Abstract

We investigate the behavior of two quantum emitters (two-level atoms) embedded in a linear waveguide, in a quasi-one-dimensional configuration. Since the atoms can emit, absorb and reflect radiation, the pair can spontaneously relax towards an entangled bound state, under conditions in which a single atom would instead decay. We analyze the properties of these bound states, which occur for resonant values of the interatomic distance, and discuss their relevance with respect to entanglement generation. The stability of such states close to the resonance is studied, as well as the properties of non resonant bound states, whose energy is below the threshold for photon propagation.

Citation

Facchi, P., Kim, M., Pascazio, S., Pepe, F. V., Pomarico, D., & Tufarelli, T. (2016). Bound states and entanglement generation in waveguide quantum electrodynamics. Physical Review A, 94(4), Article 043839. https://doi.org/10.1103/PhysRevA.94.043839

• Journal Article Type: Article
• Acceptance Date: Sep 28, 2016
• Publication Date: Oct 21, 2016
• Deposit Date: Jun 29, 2017
• Publicly Available Date: Jun 29, 2017
• Journal: Physical Review A
• Print ISSN: 2469-9926
• Electronic ISSN: 2469-9934
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 94
• Issue: 4
• Article Number: 043839
• DOI: https://doi.org/10.1103/PhysRevA.94.043839
• Public URL: https://nottingham-repository.worktribe.com/output/822254
• Publisher URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.043839
• Related Public URLs: https://arxiv.org/abs/1604.01300
• Additional Information: Paolo Facchi, M.S. Kim, Saverio Pascazio, Francesco V. Pepe, Domenico Pomarico, and Tommaso Tufarelli, Bound states and entanglement generation in waveguide quantum electrodynamics. Phys. Rev. A 94, 043839.
• Contract Date: Jun 29, 2017