Noise refocusing in a five-blade neutron interferometer
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Date
2017-08-07
Authors
Nsofini, Joachim
Sarenac, Dusan
Ghofrani, Kamyar
Huber, Michael G.
Arif, Muhammad
Cory, David G.
Pushin, Dimitry A.
Journal Title
Journal ISSN
Volume Title
Publisher
AIP Publishing
Abstract
We provide a quantum information description of a proposed five-blade neutron interferometer geometry and show that it is robust against low-frequency mechanical vibrations and dephasing due to the dynamical phase. The extent to which the dynamical phase affects the contrast in a neutron interferometer is experimentally shown. In our model, we consider the coherent evolution of a neutron wavepacket in an interferometer crystal blade and simulate the effect of mechanical vibrations and momentum spread of the neutron through the interferometer. The standard three-blade neutron interferometer is shown to be immune to dynamical phase noise but prone to noise from mechanical vibrations, and the decoherence free subspace four-blade neutron interferometer is shown to be immune to mechanical vibration noise but prone to noise from the dynamical phase. Here, we propose a five-blade neutron interferometer and show that it is immune to both low-frequency mechanical vibration noise and dynamical phase noise.
Description
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Nsofini, J., Sarenac, D., Ghofrani, K., Huber, M. G., Arif, M., Cory, D. G., & Pushin, D. A. (2017). Noise refocusing in a five-blade neutron interferometer. Journal of Applied Physics, 122(5), 054501. doi:10.1063/1.4996866 and may be found at https://dx.doi.org/10.1063/1.4996866
Keywords
dynamical diffraction, phase, coherence, optics