Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements
Abstract
Dynamical diffraction leads to an interesting, unavoidable set of interference effects for neutron interferometers. This experiment studies the interference signal from two and three successive Bragg diffractions in the Laue geometry. We find that intrinsic Bragg-plane misalignment in monolithic, “perfect” silicon neutron interferometers is relevant between successive diffracting crystals, as well as within the Borrmann fan for typical interferometer geometries. Furthermore, we show that the dynamical phase correction employed in the Colella, Overhauser, and Werner gravitationally induced quantum interference experiments is attenuated by slight, intrinsic misalignments between diffracting crystals, potentially explaining the long-standing 1% discrepancy between theory and experiment. This systematic may also impact precision measurements of the silicon structure factor, affecting previous and future measurements of the Debye-Waller factor and neutron-electron scattering length as well as potential fifth-force searches. For the interferometers used in this experiment, Bragg planes of different diffracting crystals were found to be misaligned by 10 to 40 nrad.
- Authors:
-
- North Carolina State Univ., Raleigh, NC (United States); Duke Univ., Durham, NC (United States). Triangle Universities Nuclear Laboratory
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
- Tulane Univ., New Orleans, LA (United States)
- Univ. of Waterloo, ON (Canada). Inst. for Quantum Computing; Univ. of Waterloo, ON (Canada)
- Publication Date:
- Research Org.:
- North Carolina State Univ., Raleigh, NC (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada (NSERC)
- OSTI Identifier:
- 1535724
- Alternate Identifier(s):
- OSTI ID: 1341262
- Grant/Contract Number:
- FG02-97ER41042; PHY-1307426; PHY-1205342; RGPIN-418579
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review A
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 1; Journal ID: ISSN 2469-9926
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Quantum interference effects; neutron diffraction; precision measurements
Citation Formats
Heacock, B., Arif, M., Haun, R., Huber, M. G., Pushin, D. A., and Young, A. R.. Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements. United States: N. p., 2017.
Web. https://doi.org/10.1103/physreva.95.013840.
Heacock, B., Arif, M., Haun, R., Huber, M. G., Pushin, D. A., & Young, A. R.. Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements. United States. https://doi.org/10.1103/physreva.95.013840
Heacock, B., Arif, M., Haun, R., Huber, M. G., Pushin, D. A., and Young, A. R.. Wed .
"Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements". United States. https://doi.org/10.1103/physreva.95.013840. https://www.osti.gov/servlets/purl/1535724.
@article{osti_1535724,
title = {Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements},
author = {Heacock, B. and Arif, M. and Haun, R. and Huber, M. G. and Pushin, D. A. and Young, A. R.},
abstractNote = {Dynamical diffraction leads to an interesting, unavoidable set of interference effects for neutron interferometers. This experiment studies the interference signal from two and three successive Bragg diffractions in the Laue geometry. We find that intrinsic Bragg-plane misalignment in monolithic, “perfect” silicon neutron interferometers is relevant between successive diffracting crystals, as well as within the Borrmann fan for typical interferometer geometries. Furthermore, we show that the dynamical phase correction employed in the Colella, Overhauser, and Werner gravitationally induced quantum interference experiments is attenuated by slight, intrinsic misalignments between diffracting crystals, potentially explaining the long-standing 1% discrepancy between theory and experiment. This systematic may also impact precision measurements of the silicon structure factor, affecting previous and future measurements of the Debye-Waller factor and neutron-electron scattering length as well as potential fifth-force searches. For the interferometers used in this experiment, Bragg planes of different diffracting crystals were found to be misaligned by 10 to 40 nrad.},
doi = {10.1103/physreva.95.013840},
journal = {Physical Review A},
number = 1,
volume = 95,
place = {United States},
year = {2017},
month = {1}
}
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Works referencing / citing this record:
Increased interference fringe visibility from the post-fabrication heat treatment of a perfect crystal silicon neutron interferometer
journal, February 2018
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Three Phase-Grating Moiré Neutron Interferometer for Large Interferometer Area Applications
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