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28 March 2024
 
  » arxiv » 1811.1698

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An experimental proposal to study spontaneous collapse of the wave function using two travelling wave parametric amplifiers
T.H.A. van der Reep ; L. Rademaker ; X.G.A. Le Large ; R.H. Guis ; T.H. Oosterkamp ;
Date 13 Nov 2018
AbstractAccording to one of the postulates of the Copenhagen interpretation of quantum mechanics, a measurement causes a wave function to collapse into a well-defined classical state. To study whether such spontaneous collapses exist in an electronic amplifier, we propose an experiment consisting of a microwave interferometer that has a parametric amplifier added to each of its arms. Feeding the interferometer with single photons, we entangle the output of the amplifiers. We calculate the interference visibility as given by standard quantum mechanics as a function of gain, insertion loss and temperature and find a magnitude of $1/3$ in the limit of large gain without taking into account losses. This number reduces to $0.26$ in case the insertion loss of the amplifiers is $2.2$ dB at a temperature of $50$ mK. We argue, based on Born’s rule that if the process of spontaneous collapses exists, we will measure a reduced visibility compared to the prediction from standard quantum mechanics once this collapse process sets in.
Source arXiv, 1811.1698
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