Measurement of a wavelength of light for which the energy shift for an atom vanishes

William F. Holmgren; Raisa Trubko; Ivan Hromada; Alexander D Cronin

doi:10.1103/PhysRevLett.109.243004

Measurement of a wavelength of light for which the energy shift for an atom vanishes

William F. Holmgren
, Raisa Trubko
, Ivan Hromada
, Alexander D Cronin

Physics

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

Light at a magic-zero wavelength causes a zero energy shift for an atom. We measured the longest magic-zero wavelength for ground state potassium atoms to be λ_zero=768.9712(15) nm, and we show how this measurement provides an improved experimental benchmark for atomic structure calculations. This λ_zero measurement determines the ratio of the potassium atom D1 and D2 line strengths with record precision. It also demonstrates a new application for atom interferometry, and we discuss how decoherence will fundamentally limit future measurements of magic-zero wavelengths.

Original language	English (US)
Article number	243004
Journal	Physical review letters
Volume	109
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.109.243004
State	Published - Dec 14 2012

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.109.243004

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abstract = "Light at a magic-zero wavelength causes a zero energy shift for an atom. We measured the longest magic-zero wavelength for ground state potassium atoms to be λzero=768.9712(15) nm, and we show how this measurement provides an improved experimental benchmark for atomic structure calculations. This λzero measurement determines the ratio of the potassium atom D1 and D2 line strengths with record precision. It also demonstrates a new application for atom interferometry, and we discuss how decoherence will fundamentally limit future measurements of magic-zero wavelengths.",

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AU - Holmgren, William F.

AU - Trubko, Raisa

AU - Hromada, Ivan

AU - Cronin, Alexander D

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Y1 - 2012/12/14

N2 - Light at a magic-zero wavelength causes a zero energy shift for an atom. We measured the longest magic-zero wavelength for ground state potassium atoms to be λzero=768.9712(15) nm, and we show how this measurement provides an improved experimental benchmark for atomic structure calculations. This λzero measurement determines the ratio of the potassium atom D1 and D2 line strengths with record precision. It also demonstrates a new application for atom interferometry, and we discuss how decoherence will fundamentally limit future measurements of magic-zero wavelengths.

AB - Light at a magic-zero wavelength causes a zero energy shift for an atom. We measured the longest magic-zero wavelength for ground state potassium atoms to be λzero=768.9712(15) nm, and we show how this measurement provides an improved experimental benchmark for atomic structure calculations. This λzero measurement determines the ratio of the potassium atom D1 and D2 line strengths with record precision. It also demonstrates a new application for atom interferometry, and we discuss how decoherence will fundamentally limit future measurements of magic-zero wavelengths.

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Measurement of a wavelength of light for which the energy shift for an atom vanishes

Abstract

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