TY - JOUR
T1 - Measurement of a wavelength of light for which the energy shift for an atom vanishes
AU - Holmgren, William F.
AU - Trubko, Raisa
AU - Hromada, Ivan
AU - Cronin, Alexander D.
PY - 2012/12/14
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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U2 - 10.1103/PhysRevLett.109.243004
DO - 10.1103/PhysRevLett.109.243004
M3 - Article
AN - SCOPUS:84871267794
SN - 0031-9007
VL - 109
JO - Physical Review Letters
JF - Physical Review Letters
IS - 24
M1 - 243004
ER -