2013/12/31 by Tommaso Tufarelli, M. S. Kim, Francesco Ciccarello
Computer Science · Mathematics · Physics and Astronomy · #Atom (system on chip) #Common emitter #Computer science #Markov process #Mathematics #Optoelectronics #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum mechanics #Quantum optics #Quantum optics and atomic interactions #quant-ph
paper · pdf · doi:10.1103/physreva.90.012113
published as Phys. Rev. A 90, 012113 (2014) · 7 pages, 4 figures. Fig. 3 featured in Phys. Rev. A Kaleidoscope Images: July 2014
openalex publication_date 2014/07/24 · arxiv created 2014/09/02 · arxiv updated 2014/09/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider a quantum emitter (``atom'') radiating in a one-dimensional photonic waveguide in the presence of a single mirror, resulting in a delay differential equation for the atomic amplitude. We carry out a systematic analysis of the non-Markovian (NM) character of the atomic dynamics in terms of refined, recently developed notions of quantum non-Markovianity such as indivisibility and information backflow. NM effects are quantified as a function of the round-trip time and phase shift associated with the atom-mirror optical path. We find, in particular, that unless an atom-photon bound state is formed a finite time delay is always required in order for NM effects to be exhibited. This identifies a finite threshold in the parameter space, which separates the Markovian and non-Markovian regimes.