Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom Interferometry
Accurate values for atomic dipole matrix elements are useful in many areas of physics, and in particular for interpreting experiments such as atomic parity violation. Obtaining accurate matrix element values is a challenge for both experiment and theory. A new technique that can be applied to this p...
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doaj-cf360bc8e7794725b50558c5033e90ac2020-11-24T23:01:56ZengMDPI AGAtoms2218-20042016-03-01421210.3390/atoms4020012atoms4020012Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom InterferometryAdam Fallon0Charles Sackett1Physics Department, University of Virginia, Charlottesville, VA 22904, USAPhysics Department, University of Virginia, Charlottesville, VA 22904, USAAccurate values for atomic dipole matrix elements are useful in many areas of physics, and in particular for interpreting experiments such as atomic parity violation. Obtaining accurate matrix element values is a challenge for both experiment and theory. A new technique that can be applied to this problem is tune-out spectroscopy, which is the measurement of light wavelengths where the electric polarizability of an atom has a zero. Using atom interferometry methods, tune-out wavelengths can be measured very accurately. Their values depend on the ratios of various dipole matrix elements and are thus useful for constraining theory and broadening the application of experimental values. To date, tune-out wavelength measurements have focused on zeros of the scalar polarizability, but in general the vector polarizability also contributes. We show here that combined measurements of the vector and scalar polarizabilities can provide more detailed information about the matrix element ratios, and in particular can distinguish small contributions from the atomic core and the valence tail states. These small contributions are the leading error sources in current parity violation calculations for cesium.http://www.mdpi.com/2218-2004/4/2/12atom interferometryatomic matrix elementstune-out wavelengthpolarizability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Adam Fallon Charles Sackett |
spellingShingle |
Adam Fallon Charles Sackett Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom Interferometry Atoms atom interferometry atomic matrix elements tune-out wavelength polarizability |
author_facet |
Adam Fallon Charles Sackett |
author_sort |
Adam Fallon |
title |
Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom Interferometry |
title_short |
Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom Interferometry |
title_full |
Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom Interferometry |
title_fullStr |
Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom Interferometry |
title_full_unstemmed |
Obtaining Atomic Matrix Elements from Vector Tune-Out Wavelengths Using Atom Interferometry |
title_sort |
obtaining atomic matrix elements from vector tune-out wavelengths using atom interferometry |
publisher |
MDPI AG |
series |
Atoms |
issn |
2218-2004 |
publishDate |
2016-03-01 |
description |
Accurate values for atomic dipole matrix elements are useful in many areas of physics, and in particular for interpreting experiments such as atomic parity violation. Obtaining accurate matrix element values is a challenge for both experiment and theory. A new technique that can be applied to this problem is tune-out spectroscopy, which is the measurement of light wavelengths where the electric polarizability of an atom has a zero. Using atom interferometry methods, tune-out wavelengths can be measured very accurately. Their values depend on the ratios of various dipole matrix elements and are thus useful for constraining theory and broadening the application of experimental values. To date, tune-out wavelength measurements have focused on zeros of the scalar polarizability, but in general the vector polarizability also contributes. We show here that combined measurements of the vector and scalar polarizabilities can provide more detailed information about the matrix element ratios, and in particular can distinguish small contributions from the atomic core and the valence tail states. These small contributions are the leading error sources in current parity violation calculations for cesium. |
topic |
atom interferometry atomic matrix elements tune-out wavelength polarizability |
url |
http://www.mdpi.com/2218-2004/4/2/12 |
work_keys_str_mv |
AT adamfallon obtainingatomicmatrixelementsfromvectortuneoutwavelengthsusingatominterferometry AT charlessackett obtainingatomicmatrixelementsfromvectortuneoutwavelengthsusingatominterferometry |
_version_ |
1725638174142627840 |