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Recent deposits

  • Precision Low Temperature Calorimetry and Susceptibility of Magnetic Pyrochlores 

    Pomaranski, David (University of Waterloo, 2018-09-19)
    Spin-ice models feature the same statistical disorder as water ice, which is identified as the source of zero-point entropy. Gapped topological excitations with properties of monopoles are associated with the violation of ...
  • Characterizing Humulone Content in Beer Using Differential Mobility Spectrometry 

    Zhang, Qiuying (University of Waterloo, 2018-09-19)
    Beer is a complex fermented beverage and several hundreds of components have been identified erenow. Hops are extremely important to beer’s organoleptic qualities, especially bitterness. Bitterness, a distinguishing component ...
  • Probing the dark universe with gravitational lensing 

    Karami, Mansour (University of Waterloo, 2018-09-17)
    Since its early success as an experimental test of the theory of general relativity in 1919, gravitational lensing has come a long way and is firmly established as an indispensable element for many astrophysical applications. ...
  • Spin-orbit states of neutron wave packets 

    Nsofini, Joachim; Sarenac, Dusan; Wood, Christopher J.; Cory, David G.; Arif, Muhammad; Clark, Charles W.; Huber, Michael G.; Pushin, Dimitry A. (American Physical Society, 2016-07-13)
    We propose amethod to prepare an entangled spin-orbit state between the spin and the orbital angular momenta of a neutron wave packet. This spin-orbit state is created by passing neutrons through the center of a quadrupole ...
  • Holography with a neutron interferometer 

    Sarenac, Dusan; Huber, Michael G.; Heacock, Benjamin; Arif, Muhammad; Clark, Charles W.; Cory, David G.; Shahi, Chandra B.; Pushin, Dimitry A. (The Optical Society, 2016-10-03)
    We use a Mach-Zehnder interferometer to perform neutron holography of a spiral phase plate. The object beam passes through a spiral phase plate, acquiring the phase twist characteristic of orbital angular momentum states. ...
  • Decoupling of a neutron interferometer from temperature gradients 

    Saggu, Parminder; Mineeva, Taisiya; Arif, Muhammad; Cory, David G.; Haun, Robert; Heacock, Benjamin; Huber, Michael G.; Li, Ke; Nsofini, Joachim; Sarenac, Dusan; Shahi, Chandra B.; Skavysh, Vladimir; Snow, W. Michael; Werner, Samuel A.; Young, Albert R.; Pushin, Dimitry A. (AIP Publishing, 2016-12-16)
    Neutron interferometry enables precision measurements that are typically operated within elaborate, multi-layered facilities which provide substantial shielding from environmental noise. These facilities are necessary to ...
  • Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements 

    Heacock, Benjamin; Arif, Muhammad; Haun, Robert; Huber, Michael G.; Pushin, Dimitry A.; Young, Albert R. (American Physical Society, 2017-01-25)
    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 ...
  • Quantum-information approach to dynamical diffraction theory 

    Nsofini, Joachim; Ghofrani, Kamyar; Sarenac, Dusan; Cory, David G.; Pushin, Dimitry A. (American Physical Society, 2016-12-08)
    We present a simplified model for dynamical diffraction of particles through a periodic thick perfect crystal based on repeated application of a coherent beam-splitting unitary at coarse-grained lattice sites. By demanding ...
  • Noise refocusing in a five-blade neutron interferometer 

    Nsofini, Joachim; Sarenac, Dusan; Ghofrani, Kamyar; Huber, Michael G.; Arif, Muhammad; Cory, David G.; Pushin, Dimitry A. (AIP Publishing, 2017-08-07)
    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 ...
  • Far-field interference of a neutron white beam and the applications to noninvasive phase-contrast imaging 

    Pushin, Dimitry A.; Sarenac, Dusan; Hussey, Daniel S.; Miao, Haixing; Arif, Muhammad; Cory, David G.; Huber, Michael G.; Jacobson, David L.; LaManna, Jacob M.; Parker, Joseph D.; Shinohara, Takenao; Ueno, Wataru; Wen, Han (American Physical Society, 2017-04-26)
    The phenomenon of interference plays a crucial role in the field of precision measurement science. Waveparticle duality has expanded the well-known interference effects of electromagnetic waves to massive particles. The ...
  • Increased interference fringe visibility from the post-fabrication heat treatment of a perfect crystal silicon neutron interferometer 

    Heacock, Benjamin; Arif, Muhammad; Cory, David G.; Gnaeupel-Herold, Thomas; Haun, Robert; Huber, Michael G.; Jamer, Michelle E.; Nsofini, Joachim; Pushin, Dimitry A.; Sarenac, Dusan; Taminiau, Ivan; Young, Albert R. (AIP Publishing, 2018-02-08)
    We find that annealing a previously chemically etched interferometer at 800 degrees C dramatically increased the interference fringe visibility from 23% to 90%. The Bragg plane misalignments were also measured before and ...
  • Experimental search for long-range forces in neutron scattering via a gravitational spectrometer 

    Serebrov, Anatoli P.; Geltenbort, Peter; Zherebtsov, O. M.; Sbitnev, S. V.; Varlamov, V. E.; Vassiljev, A. V.; Lasakov, M. S.; Krasnoschekova, I. A.; Ivanov, S. N.; Pushin, Dimitry A. (American Physical Society, 2014-04-09)
    In this work we introduce a method of measuring low-energy scattering cross section with a gravitational spectrometer. In this method we add atoms (i.e., He) to the gravitational spectrometer filled with a target gas of ...
  • Neutron interferometric measurement of the scattering length difference between the triplet and singlet states of n-He-3 

    Huber, Michael G.; Arif, Muhammad; Chen, Wangchun C.; Gentile, Thomas R.; Hussey, Daniel S.; Black, Timothy C.; Pushin, Dimitry A.; Shahi, Chandra B.; Wietfeldt, Fred E.; Yang, Liang (American Physical Society, 2014-12-15)
    We report a determination of the n-He-3 scattering length difference = b = = b = 1 -b = 0 = [-5.411 = 0.031 (statistical) = 0.039 (systematic)] fm between the triplet and singlet states using a neutron interferometer. This ...
  • Quantum correlations in a noisy neutron interferometer 

    Wood, Christopher J.; Abutaleb, Mohamed O.; Huber, Michael G.; Arif, Muhammad; Cory, David G.; Pushin, Dimitry A. (American Physical Society, 2014-09-15)
    We investigate quantum coherences in the presence of noise by entangling the spin and path degrees of freedom of the output neutron beam from a noisy three-blade perfect crystal neutron interferometer. We find that in the ...
  • Neutron Interferometry at the National Institute of Standards and Technology 

    Pushin, Dimitry A.; Huber, Michael G.; Arif, Muhammad; Shahi, Chandra B.; Nsofini, Joachim; Wood, Christopher J.; Sarenac, Dusan; Cory, David G. (Hindawi, 2015)
    Neutron interferometry has proved to be a very precise technique for measuring the quantum mechanical phase of a neutron caused by a potential energy difference between two spatially separated neutron paths inside ...
  • Neutron limit on the strongly-coupled chameleon field 

    Li, Ke; Arif, Muhammad; Cory, David G.; Haun, Robert; Heacock, Benjamin; Huber, Michael G.; Nsofini, Joachim; Pushin, Dimitry A.; Saggu, Parminder; Sarenac, Dusan; Shahi, Chandra B.; Skavysh, Vladimir; Snow, W. Michael; Young, Albert R. (American Physical Society, 2016-03-11)
    The physical origin of the dark energy that causes the accelerated expansion rate of the Universe is one of the major open questions of cosmology. One set of theories postulates the existence of a self-interacting scalar ...
  • A sensitive search for dark energy through chameleon scalar fields using neutron interferometry 

    Snow, W. Michael; Arif, Muhammad; Heacock, Benjamin; Huber, Michael G.; Li, Ke; Pushin, Dimitry A.; Skavysh, Vladimir; Young, Albert R. (IOP Publishing, 2015-01-22)
    The physical origin of the dark energy, which is postulated to cause the accelerated expansion rate of the universe, is one of the major open questions of cosmology. A large subset of theories postulate the existence of a ...
  • Three Phase-Grating Moire Neutron Interferometer for Large Interferometer Area Applications 

    Sarenac, Dusan; Pushin, Dimitry A.; Huber, Michael G.; Hussey, Daniel S.; Miao, Haixing; Arif, Muhammad; Cory, David G.; Cronin, Alex D.; Heacock, Benjamin; Jacobson, David L.; LaManna, Jacob M.; Wen, Han (American Physical Society, 2018-03-12)
    We demonstrate a three phase-grating moire neutron interferometer in a highly intense neutron beam as a robust candidate for large area interferometry applications and for the characterization of materials. This novel ...
  • Optical pulse compression of first anti-Stokes order in the multi-frequency Raman generation with the presence of red shifted shoulder 

    Rahnama, Abdullah (University of Waterloo, 2018-09-11)
    Multi-frequency Raman generation (MRG) is a nonlinear technique to generate intense trains of single-femtosecond pulses. The broad spectrum of different Raman orders which is spread from near-infrared (near-IR) to UV can ...
  • Data Analysis Protocol for the Development and Evaluation of Population Pharmacokinetic Models for Incorporation Into the Web-Accessible Population Pharmacokinetic Service - Hemophilia (WAPPS-Hemo) 

    McEneny-King, Alanna; Foster, Gary; Iorio, Alfonso; Edginton, Andrea N. (JMIR Publications, 2016-12-07)
    Background: Hemophilia is an inherited bleeding disorder caused by a deficiency in a specific clotting factor. This results in spontaneous bleeding episodes and eventual arthropathy. The mainstay of hemophilia treatment ...

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