TY - JOUR
KW - General Physics and Astronomy
AU - Colin Kennedy
AU - Eric Oelker
AU - John Robinson
AU - Tobias Bothwell
AU - Dhruv Kedar
AU - William Milner
AU - Edward Marti
AU - Andrei Derevianko
AU - Jun Ye
AB - We conduct frequency comparisons between a state-of-the-art strontium optical lattice clock, a cryogenic crystalline silicon cavity, and a hydrogen maser to set new bounds on the coupling of ultralight dark matter to standard model particles and fields in the mass range of 10−16 − 10−21eV. The key advantage of this two-part ratio comparison is the differential sensitivity to time variation of both the fine-structure constant and the electron mass, achieving a substantially improved limit on the moduli of ultralight dark matter, particularly at higher masses than typical atomic spectroscopic results. Furthermore, we demonstrate an extension of the search range to even higher masses by use of dynamical decoupling techniques. These results highlight the importance of using the best-performing atomic clocks for fundamental physics applications, as all-optical timescales are increasingly integrated with, and will eventually supplant, existing microwave timescales.
BT - Physical Review Letters
DA - 2020-11
DO - 10.1103/physrevlett.125.201302
IS - 20
N2 - We conduct frequency comparisons between a state-of-the-art strontium optical lattice clock, a cryogenic crystalline silicon cavity, and a hydrogen maser to set new bounds on the coupling of ultralight dark matter to standard model particles and fields in the mass range of 10−16 − 10−21eV. The key advantage of this two-part ratio comparison is the differential sensitivity to time variation of both the fine-structure constant and the electron mass, achieving a substantially improved limit on the moduli of ultralight dark matter, particularly at higher masses than typical atomic spectroscopic results. Furthermore, we demonstrate an extension of the search range to even higher masses by use of dynamical decoupling techniques. These results highlight the importance of using the best-performing atomic clocks for fundamental physics applications, as all-optical timescales are increasingly integrated with, and will eventually supplant, existing microwave timescales.
PB - American Physical Society (APS)
PY - 2020
SE - 201302
EP - 201302
T2 - Physical Review Letters
TI - Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons
UR - https://link.aps.org/doi/10.1103/PhysRevLett.125.201302
VL - 125
SN - 0031-9007, 1079-7114
ER -