dorsal/arxiv
View SchemaComparison of two single-ion optical frequency standards at the sub-Hertz level
| Authors | Chr. Tamm, T. Schneider, E. Peik |
|---|---|
| Categories | |
| ArXiv ID | physics/0402120 |
| URL | https://arxiv.org/abs/physics/0402120 |
| DOI | 10.1142/9789812703002_0007 |
Abstract
We describe experimental investigations on an optical frequency standard based on a laser cooled 171Yb+ ion confined in a radiofrequency Paul trap. The electric-quadrupole transition from the 2S1/2(F=0) ground state to the 2D3/2(F=2) state at the wavelength of 436 nm is used as the reference transition. The reference transition is probed by a frequency-doubled, frequency-stabilized diode laser and is resolved with a Fourier-limited full halfwidth of approximately 30 Hz. In order to compare two 171Yb+ standards, separate frequency shift and servo systems are employed to stabilise the probe frequency to the reference transition line centers of two independently stored 171Yb+ ions. The present experimental results indicate a relative instability (Allan standard deviation)of the optical frequency difference between the two systems of sigma_y(1000 s)=1.0E-15 and a mean frequency difference of 0.2 Hz. Shifts in the range of several Hertz are observed in the frequency difference if a stationary electric field gradient is superimposed on the radiofrequency trap field. This measurement permits a first experimental estimate of the electric quadrupole moment of the 2D3/2 state of Yb+.
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"abstract": "We describe experimental investigations on an optical frequency standard\nbased on a laser cooled 171Yb+ ion confined in a radiofrequency Paul trap. The\nelectric-quadrupole transition from the 2S1/2(F=0) ground state to the\n2D3/2(F=2) state at the wavelength of 436 nm is used as the reference\ntransition. The reference transition is probed by a frequency-doubled,\nfrequency-stabilized diode laser and is resolved with a Fourier-limited full\nhalfwidth of approximately 30 Hz. In order to compare two 171Yb+ standards,\nseparate frequency shift and servo systems are employed to stabilise the probe\nfrequency to the reference transition line centers of two independently stored\n171Yb+ ions. The present experimental results indicate a relative instability\n(Allan standard deviation)\u0026#61472;of the optical frequency difference between\nthe two systems of sigma_y(1000 s)=1.0E-15 and a mean frequency difference of\n0.2 Hz. Shifts in the range of several Hertz are observed in the frequency\ndifference if a stationary electric field gradient is superimposed on the\nradiofrequency trap field. This measurement permits a first experimental\nestimate of the electric quadrupole moment of the 2D3/2 state of Yb+.",
"arxiv_id": "physics/0402120",
"authors": [
"Chr. Tamm",
"T. Schneider",
"E. Peik"
],
"categories": [
"physics.atom-ph",
"physics.optics"
],
"doi": "10.1142/9789812703002_0007",
"title": "Comparison of two single-ion optical frequency standards at the sub-Hertz level",
"url": "https://arxiv.org/abs/physics/0402120"
},
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