MG15 - Talk detail |
Participant |
Robinson, John | |||||||
Institution |
JILA, University of Colorado at Boulder - 440 UCB - Boulder - Colorado - USA | |||||||
Session |
PT4 |
Accepted |
Yes |
Order |
9 |
Time |
18:35 | 20' |
Talk |
Oral abstract |
Title |
Search for Dark Matter with an Optical Lattice Clock | |||||
Coauthors | Robinson, John; Oelker, Eric; Kennedy, Colin; Marti, Edward; Bothwell, Tobias; Kedar, Dhruv; Sonderhouse, Lindsay; Ye, Jun | |||||||
Abstract |
We report on an experimental search for ultralight, scalar dark matter by frequency comparisons of a cryogenic silicon optical cavity and a 1D optical lattice clock. If a scalar dark matter particle couples to the Standard Model, it will give rise to an oscillating fine-structure constant, α. Sensitivity to dark matter is provided by the different coupling to α for the silicon crystal bond length and the strontium atomic transition frequency. Due to the extraordinary coherence time of our ultrastable laser, we achieve competitive bounds of α-variation for Fourier frequencies from 0.1 mHz to 0.1 Hz. We will also discuss the strategy of using dynamical-decoupling to extend sensitivity to higher Fourier frequencies. |
|||||||
Pdf file |
||||||||