291 citations · 492 across the 7 of their papers we have counts for
7 papers
Precise determination of micromotion for trapped-ion optical clocks
J. Keller, H. L. Partner, T. Burgermeister +1
As relative systematic frequency uncertainties in trapped-ion spectroscopy are approaching the low range, motional frequency shifts account for a considerable fraction o…
Structural phase transitions and topological defects in ion Coulomb crystals
Heather L. Partner, Ramil Nigmatullin, Tobias Burgermeister +7
We use laser-cooled ion Coulomb crystals in the well-controlled environment of a harmonic radiofrequency ion trap to investigate phase transitions and defect formation. Topological…
Dynamics of topological defects in ion Coulomb crystals
Heather L. Partner, Ramil Nigmatullin, Tobias Burgermeister +5
We study experimentally and theoretically the properties of structural defects (kink solitons) in two-dimensional ion Coulomb crystals. We show how different types of kink solitons…
Symmetry Breaking and Topological Defect Formation in Ion Coulomb Crystals
Karsten Pyka, Jonas Keller, Heather L. Partner +9
Symmetry breaking phase transitions play an important role in nature. When a system traverses such a transition at a finite rate, its causally disconnected regions choose the new b…
Development and Characterization of a 171Yb+ Miniature Ion Trap Frequency Standard
Heather L. Partner
This dissertation reports on the development of a low-power, high-stability miniature atomic frequency standard based on 171Yb+ ions. The ions are buffer-gas cooled and held in a l…
Magnetometry via a double-pass continuous quantum measurement of atomic spin
Bradley A. Chase, Ben Q. Baragiola, Heather L. Partner +2
We argue that it is possible in principle to reduce the uncertainty of an atomic magnetometer by double-passing a far-detuned laser field through the atomic sample as it undergoes…