Observation of the 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow /><mml:mn>1</mml:mn></mml:msup><mml:msub><mml:mi>S</mml:mi><mml:mn>0</mml:mn></mml:msub></mml:mrow></mml:math>
 to 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow /><mml:mn>3</mml:mn></mml:msup><mml:msub><mml:mi>D</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:mrow></mml:math>
 clock transition in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><

Arnold, K. J.; Kaewuam, R.; Roy, Amit; Páez, Eduardo; Wang, S.; Barrett, M. D.

doi:10.1103/physreva.94.052512

Cited by 10 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1a). The 1 S 0 ↔ 3 D 1 clock transition at 848 nm is a highly forbidden magnetic dipole (M1) transition with an estimated lifetime of 172 hours [23]; and the 1 S 0 ↔ 3 D 2 at 804 nm is a spin-forbidden electric quadrupole (E2) transition with a measured lifetime of 17.3 s [11]. Both 848 and 804 nm clock lasers are frequency offset locked to the same reference cavity which has finesse of 400,000 and 30,000 at the respective wavelengths.…”

Section: Resultsmentioning

confidence: 99%

Blackbody radiation shift assessment for a lutetium ion clock

et al. 2018

Self Cite

View full text Add to dashboard Cite

The accuracy of state-of-the-art atomic clocks is derived from the insensitivity of narrow optical atomic resonances to environmental perturbations. Two such resonances in singly ionized lutetium have been identified with potentially lower sensitivities compared to other clock candidates. Here we report measurement of the most significant unknown atomic property of both transitions, the static differential scalar polarizability. From this, the fractional blackbody radiation shift for one of the transitions is found to be −1.36(9) × 10−18 at 300 K, the lowest of any established optical atomic clock. In consideration of leading systematic effects common to all ion clocks, both transitions compare favorably to the most accurate ion-based clocks reported to date. This work firmly establishes Lu+ as a promising candidate for a future generation of more accurate optical atomic clocks.

show abstract

Section: Resultsmentioning

confidence: 99%

Blackbody radiation shift assessment for a lutetium ion clock

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this approach, a single ion Coulomb crystal consisting of a large number of ions (100s to 1000) is envisioned to provide an ion frequency standard with an order of magnitude improved stability (Arnold et al 2015). Spectroscopy of the lutetium ion clock transition was recently reported (Arnold et al 2016b). In this context, an active optical frequency standard was proposed using a Coulomb crystal composed of ions with negative differential polarizability on the clock transition (Kazakov et al 2017).…”

Section: Multi-ion Frequency Standardsmentioning

confidence: 99%

Atomic clocks for geodesy

et al. 2018

View full text Add to dashboard Cite

We review experimental progress on optical atomic clocks and frequency transfer, and consider the prospects of using these technologies for geodetic measurements. Today, optical atomic frequency standards have reached relative frequency inaccuracies below 10, opening new fields of fundamental and applied research. The dependence of atomic frequencies on the gravitational potential makes atomic clocks ideal candidates for the search for deviations in the predictions of Einstein's general relativity, tests of modern unifying theories and the development of new gravity field sensors. In this review, we introduce the concepts of optical atomic clocks and present the status of international clock development and comparison. Besides further improvement in stability and accuracy of today's best clocks, a large effort is put into increasing the reliability and technological readiness for applications outside of specialized laboratories with compact, portable devices. With relative frequency uncertainties of 10, comparisons of optical frequency standards are foreseen to contribute together with satellite and terrestrial data to the precise determination of fundamental height reference systems in geodesy with a resolution at the cm-level. The long-term stability of atomic standards will deliver excellent long-term height references for geodetic measurements and for the modelling and understanding of our Earth.

show abstract

“…There are three narrow linewidth optical transitions from the 1 S 0 ground state to the upper 3 D 1 , 3 D 2 , and 1 D 2 clock states. The lifetime of 3 D 1 is estimated to be approximately 172 hours [3], and the lifetimes of 3 D 2 and 1 D 2 have been measured to be 17.3 s and 180 ms respectively [8]. Doppler cooling and detection are achieved via scattering on the nearly closed 3 D 1 -to-3 P 0 transition at 646 nm, which has a measured linewidth of ∼ 2π × 2.45 MHz [4,9].…”

Section: Methodsmentioning

confidence: 99%

“…Spectroscopy of the 1 D 2 level follows a similar procedure to that reported in [4]. The atom is first optically pumped to 3 D 1 with success checked in real time using a Bayesian detection scheme reported in [3]. When the atom is detected bright, the experiment continues with a 5 ms Doppler cooling pulse followed by optical pumping to 3 D 1 , F = 7, m = 0 .…”

Section: Measurementsmentioning

confidence: 99%

“…Transitions at 848 and 804 nm have been observed [3,4] and investigated [5], which demonstrated competitive properties with leading clock candidates. The 848nm transition, in particular, offers an exceptionally low blackbody radiation (BBR) shift and all atomic properties relevant to clock performance offer an improvement over the Yb + octupole transition [2,5].…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Spectroscopy of the $^1S_0$-to-$^1D_2$ clock transition in $^{176}$Lu$^+$

Kaewuam,

Tan,

Arnold

et al. 2019

Preprint

Self Cite

View full text Add to dashboard Cite

High precision spectroscopy of the 1 S0-to-1 D2 clock transition of 176 Lu is reported. Measurements are performed with Hertz level precision with the accuracy of the hyperfine-averaged frequency limited by the calibration of an active hydrogen maser to the SI definition of the second via a GPS link. The measurements also provide accurate determination of the 1 D2 hyperfine structure. Hyperfine structure constants associated with the magnetic octupole and electric hexadecapole moments of the nucleus are considered, which includes a derivation of correction terms from third-order perturbation theory.

show abstract

Observation of the 1S0 to 3D1 clock transition in <

Cited by 10 publications

References 16 publications

Blackbody radiation shift assessment for a lutetium ion clock

Blackbody radiation shift assessment for a lutetium ion clock

Atomic clocks for geodesy

Spectroscopy of the $^1S_0$-to-$^1D_2$ clock transition in $^{176}$Lu$^+$

Contact Info

Product

Resources

About