2018/06/29 by José de Ramón, Jose de Ramon, Luis J. Garay +2
Engineering · Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Algorithm #Bipartite graph #Computer science #Coupling (piping) #Detector #Engineering #Field (mathematics) #Function (biology) #Mathematics #Observable #Optics #Physics #Point (geometry) #Pure mathematics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum Mechanics and Applications #Quantum field theory #Quantum mechanics #State (computer science) #Statistical physics #Theoretical computer science #Theoretical physics #gr-qc #hep-th #quant-ph
paper · pdf · doi:10.1103/physrevd.98.105011
published as Phys. Rev. D 98, 105011 (2018) · 11 pages. RevTeX 4.1
arxiv created 2018/06/29 · openalex publication_date 2018/11/26 · arxiv updated 2018/12/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We analyze fast interaction cycles in bipartite quantum systems, showing that the statistics in one of the parties (the detector) can be used to determine the two-point correlator of the observable which mediates the coupling in the other (the target). We apply the results to the response of particle detectors coupled to quantum fields and subject to this kind of interactions. We show that, in principle, such a setup can be used to experimentally obtain a direct evaluation of the Wightman function (both its real and imaginary parts) for any field state.