%0 Journal Article
%A Bush, Zachary R.
%A Barke, Simon
%A Hollis, Harold
%A Spector, Aaron D.
%A Hallal, Ayman
%A Messineo, Giuseppe
%A Tanner, David
%A Mueller, Guido
%T Coherent detection of ultraweak electromagnetic fields
%J Physical review / D
%V 99
%N 2
%@ 2470-0010
%C Ridge, NY
%I American Physical Society
%M PUBDB-2024-01007
%M arXiv:1710.04209
%P 022001
%D 2019
%X We explore the application of heterodyne interferometry for a weak-field coherent detection scheme. The methods detailed here will be used in ALPS II, an experiment designed to search for weakly interacting, sub-eV particles. For ALPS II to reach its design sensitivity this detection system must be capable of accurately measuring fields with equivalent amplitudes on the order of 10<sup>−5</sup> photons/s or greater. We present initial results of an equivalent dark count rate on the order of 10<sup>−5</sup> photons/s as well as successful generation and detection of a signal with a field strength equivalent to 10<sup>−2</sup> photons/s. 
%K Experiments in gravity, cosmology, cosmic rays (autogen)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000454769300001
%R 10.1103/PhysRevD.99.022001
%U https://bib-pubdb1.desy.de/record/604148