Potassium tune-out-wavelength measurement using atom interferometry and a multipass optical cavity

Trubko, Raisa; Gregoire, Maxwell D.; Holmgren, William F.; Cronin, Alexander D.

doi:10.1103/physreva.95.052507

Cited by 26 publications

(15 citation statements)

References 67 publications

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“…Since TO wavelengths are unique to a specific state, they can be used to create species-and state-dependent potentials [25][26][27][28][29] and for minimizing measurement backaction [30]. Precision measurements of TO wavelengths [31][32][33][34][35][36][37][38] may also be used to test all-order atomic theory [24,39,40] and QED [41,42]. Ab initio calculations in simple atoms with three or fewer electrons admit explicit accounting of electron-electron correlations [43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Measurement of a Li7 tune-out wavelength by phase-patterned atom interferometry

et al. 2019

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Atom interferometers typically use the total populations the interferometer's output ports as the signal, but finer spatial structure can contain useful information. We pattern a matter-wave phase profile onto an atomic sample. An interferometer translates the phase into a measurable pattern in the atomic density that we use perform the first direct precision measurement of the 7 Li tune-out wavelength near 671 nm. Expressed as a detuning from the |2S 1/2 , F =2 →|2P 1/2 , F =2 transition, we find 3329.3(1.4) MHz for the tensor-shifted tune out of the |2S 1/2 , F =2, mF =0 state with σ ± light polarization and 3310.1(4.9) MHz for the tune out of the the scalar polarizability. This technique may be generalized for directly sensing spatially varying phase profiles.

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Section: Introductionmentioning

confidence: 99%

Measurement of a Li7 tune-out wavelength by phase-patterned atom interferometry

et al. 2019

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“…In order to describe such an interferometer sequence with instantaneous laser pulses, we use the building blocks presented by equations (7), (10), and (12), and obtain the total evolution operator…”

Section: Interferometer Sequencementioning

confidence: 99%

“…n n n n n f i f 1 1 3 2 2 2 1 1 1 i of this interferometer with the initial time t i <t 1 and the final time t f >t n . Now we use the facts that the free evolution operator  , equation (7), is diagonal and the operator  , equation (12), is anti-diagonal in the ñ ñ {| | } 1 , 2 -basis. In this case, the operator…”

Section: Interferometer Sequencementioning

confidence: 99%

Representation-free description of atom interferometers in time-dependent linear potentials

et al. 2019

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In this article we present a new representation-free formalism, which can significantly simplify the analysis of interferometers comprised of atoms moving in time-dependent linear potentials. We present a methodology for the construction of two pairs of time-dependent functions that, once determined, lead to two conditions for the closing of the interferometer, and determine the phase and the contrast of the resultant interference. Using this new formalism, we explore the dependency of the interferometer phase on the interferometer time T for different atom interferometers. By now, it is well established that light pulse atom interferometers of the type first demonstrated by Kasevich and Chu (1991 Phys. Rev. Lett. 67, 181-4; Appl. Phys. B 54, 321-32), henceforth referred to as Mach-Zehnder (MZ) atom interferometers, have a phase scaling as T 2 . A few years ago, McDonald et al (2014 Europhys. Lett. 105, 63001) have experimentally demonstrated a novel type of atom interferometer, referred to as the continuous-acceleration bloch (CAB) interferometer, where the phase reveals a mixed scaling which is governed by a combination of T 2 and T 3 . Moreover, we have recently proposed a different type of atom interferometer (Zimmermann et al 2017 Appl . Phys. B 123, 102), referred to as the T 3 -interferometer, which has a pure T 3 scaling, as demonstrated theoretically. Finally, we conclude that the CAB interferometer can be shown to be a hybrid of the standard MZ interferometer and the T 3 -interferometer. Enhancing the sensitivity of atom interferometersBecause of their extreme interferometric sensitivity, atom interferometers have been used to precisely measure physical quantities such as the polarizability of alkali atoms [6-9], the 'magic wavelength' for potassium, rubidium and calcium [10-12], Planck's constant to the cesium mass ratio h/m Cs [13], the fine structure OPEN ACCESS RECEIVED

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“…Precise knowledge of the polarizability is important for a number of applications including optical lattice clocks, quantifying lattice potentials, and as benchmarks for testing theoretical methods of calculating polarizability for more complex atoms such as Er and Dy [25]. Measurements of tune-out wavelengths are important as they allow the determination of multiple atomic properties including transition dipole matrix elements, oscillator strengths, and state lifetimes [25,26]. Transition dipole matrix elements * s.l.cornish@durham.ac.uk are fundamental properties of atoms as well as being crucial parameters for determining, for example, the blackbody radiation shift of atoms which is often a limiting systematic uncertainty in atomic clocks [27].…”

Section: Introductionmentioning

confidence: 99%

Measurement of the tune-out wavelength for Cs133 at 880 nm

et al. 2021

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We perform a measurement of the tune-out wavelength, λ 0 , between the D 1 , 6 2 S 1/2 → 6 2 P 1/2 , and D 2 , 6 2 S 1/2 → 6 2 P 3/2 , transitions for 133 Cs in the ground hyperfine state (F = 3, m F = +3). At λ 0 , the frequencydependent scalar polarizability is zero leading to a zero scalar ac Stark shift. We measure the polarizability as a function of wavelength using Kapitza-Dirac scattering of a 133 Cs Bose-Einstein condensate in a one-dimensional optical lattice, and determine the tune-out wavelength to be λ 0 = 880.21790( 40) stat (8) sys nm. From this measurement we determine the ratio of reduced matrix elements to be 1.9808(2). This represents an improvement of a factor of 10 over previous results derived from excited-state lifetime measurements. We use the present measurement as a benchmark test of high-precision theory.

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Potassium tune-out-wavelength measurement using atom interferometry and a multipass optical cavity

Cited by 26 publications

References 67 publications

Measurement of a Li7 tune-out wavelength by phase-patterned atom interferometry

Measurement of a Li7 tune-out wavelength by phase-patterned atom interferometry

Representation-free description of atom interferometers in time-dependent linear potentials

Measurement of the tune-out wavelength for Cs133 at 880 nm

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