Blackbody radiation shift assessment for a lutetium ion clock

@article{Arnold2018BlackbodyRS,
  title={Blackbody radiation shift assessment for a lutetium ion clock},
  author={K J Arnold and Rattakorn Kaewuam and Arpan Roy and Ting Rei Tan and M. D. Barrett},
  journal={Nature Communications},
  year={2018},
  volume={9}
}
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… 
Inner-shell clock transition in atomic thulium with a small blackbody radiation shift
TLDR
An unusually low sensitivity of a 1.14 μm inner-shell clock transition in neutral Tm atoms to BBR is demonstrated, which allows the development of lanthanide-based optical clocks with a relative uncertainty at the 10−17 level.
Extraordinary low systematic frequency shifts in bi-colour thulium optical clock
Optical atomic clocks have already overcome the eighteenth decimal digit of instability and uncertainty demonstrating incredible control over external perturbations of the clock transition frequency.
Combined atomic clock with blackbody-radiation-shift-induced instability below 10−19 under natural environment conditions
We develop a method of synthetic frequency generation to construct an atomic clock with blackbody radiation (BBR) shift uncertainties below 10−19 at environmental conditions with a very low level of
Quadruply Ionized Barium as a Candidate for a High-Accuracy Optical Clock.
TLDR
The differential static scalar polarizability is found to be small and negative, providing suppressed sensitivity to blackbody radiation while simultaneously allowing cancellation of Stark and excess micromotion shifts.
Simultaneous bicolor interrogation in thulium optical clock providing very low systematic frequency shifts
TLDR
This work demonstrates implementation of a synthetic frequency approach for a thulium optical clock with simultaneous optical interrogation of two clock transitions and shows suppression of the quadratic Zeeman shift by at least three orders of magnitude.
Suppressing Inhomogeneous Broadening in a Lutetium Multi-ion Optical Clock.
We demonstrate precision measurement and control of inhomogeneous broadening in a multi-ion clock consisting of three ^{176}Lu^{+} ions. Microwave spectroscopy between hyperfine states in the
Clock-related properties of Lu+
Singly ionized lutetium has a number of fortuitous properties well suited for a design of an optical clock and corresponding applications. In this work, we study ${\mathrm{Lu}}^{+}$ properties
Hyperfine Averaging by Dynamic Decoupling in a Multi-Ion Lutetium Clock.
TLDR
The method eliminates the need to average over multiple optical transitions, reduces the sensitivity of the clock to its environment, and reduces inhomogeneous broadening in a multi-ion clock.
Polarizability assessments of ion-based optical clocks
It is shown that the dynamic differential scalar polarisability of the $S_{1/2}-D_{5/2}$ transition in $^{138}$Ba$^+$ can be determined to an inaccuracy below $0.5\%$ across a wide wavelength range
Narrow-line Cooling and Determination of the Magic Wavelength of Cd.
TLDR
The magic wavelength of the (5s^{2})^{1}S_{0}-^{3}P_{1} clock transition of ^{111}Cd to be 419.88(14) and 420.1(7) nm is experimentally and theoretically determined.
...
1
2
3
4
...

References

SHOWING 1-10 OF 36 REFERENCES
Systematic evaluation of an atomic clock at 2 × 10−18 total uncertainty
TLDR
This work performs a new accuracy evaluation of the JILA Sr clock, reducing many systematic uncertainties that limited previous measurements, such as those in the lattice ac Stark shift, the atoms' thermal environment and the atomic response to room-temperature blackbody radiation.
Multipolar theory of blackbody radiation shift of atomic energy levels and its implications for optical lattice clocks
Blackbody radiation (BBR) shifts of the {sup 3}P{sub 0}-{sup 1}S{sub 0} clock transition in the divalent atoms Mg, Ca, Sr, and Yb are evaluated. The dominant electric-dipole contributions are
High-accuracy measurement of atomic polarizability in an optical lattice clock.
TLDR
The ytterbium optical clock's sensitivity to electric fields (such as blackbody radiation) as the differential static polarizability of the ground and excited clock levels α(clock) is reported.
High accuracy correction of blackbody radiation shift in an optical lattice clock.
TLDR
The frequency shift that blackbody radiation is inducing on the 5s2 (1)S0-5s5p (3)P0 clock transition in strontium is determined and a measurement of the differential dc polarizability of the two clock states and a modeling of the dynamic contribution using this value and experimental data for other atomic properties are modeled.
Towards a Re-definition of the Second Based on Optical Atomic Clocks
Prospects for atomic clocks based on large ion crystals
We investigate the feasibility of precision frequency metrology with large ion crystals. For clock candidates with a negative differential static polarizability, we show that micromotion effects
Single-Ion Atomic Clock with 3×10(-18) Systematic Uncertainty.
TLDR
An optical frequency standard based on the E3 transition of a single trapped (171)Yb+ ion is experimentally investigated and a Ramsey-type excitation scheme that provides immunity to probe-induced frequency shifts is utilized.
Optical atomic clocks with suppressed blackbody-radiation shift
We study a wide range of neutral atoms and ions suitable for ultra-precise atomic optical clocks with naturally suppressed black body radiation shift of clock transition frequency. Calculations show
Evaluation of trap-induced systematic frequency shifts for a multi-ion optical clock at the 10 -19 level
In order to improve the short-term stability of trapped-ion optical clocks, we are developing a frequency standard based on 115In+ / 172Yb+ Coulomb crystals. For this purpose, we have developed
Frequency comparison of two high-accuracy Al+ optical clocks.
TLDR
An optical clock with a fractional frequency inaccuracy of 8.6x10{-18}, based on quantum logic spectroscopy of an Al+ ion, is constructed, consistent with the accuracy limit of the older clock.
...
1
2
3
4
...