2014/05/31 by Florian Fröwis, F. Fröwis, Nicolas Sangouard +3 · 2 citations
Computer Science · Physics and Astronomy · #Condensed matter physics #Mechanical and Optical Resonators #Open quantum system #Photon #Photonics #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum imaging #Quantum mechanics #Quantum state #Quantum technology #Simple (philosophy) #Spin (aerodynamics) #Spin states #Statistical physics #quant-ph
paper · pdf · doi:10.1016/j.optcom.2014.07.017
published as Optics Communications, 337, 2 (2015) · 12 pages, 1 figure; published in a special issue of Optics Communications: "Macroscopic quantumness: theory and applications in optical sciences"; v2: minor changes
openalex publication_date 2014/07/18 · arxiv created 2014/12/03 · arxiv updated 2014/12/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We review and compare several measures that identify quantum states that are "macroscopically quantum". These measures were initially formulated either for photonic systems or spin ensembles. Here, we compare them through a simple model which maps photonic states to spin ensembles. On the one hand, we reveal problems for some spin measures to handle correctly photonic states that typically are considered to be macroscopically quantum. On the other hand, we find significant similarities between other measures even though they were differently motivated.