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20 papers
Stabilization of ion-trap secular frequencies for a quantum phase transition study
Jie Zhang, B. T. Chow, P. C. Haljan
An array of ions in a linear radio-frequency (RF) Paul trap is a good candidate for investigating structural phase transitions, such as the linear-to-zigzag (LZ) transition, due to…
Spectroscopic Characterization of the Quantum Linear-Zigzag Transition in Trapped Ions
J. Zhang, B. T. Chow, S. Ejtemaee +1
While engineered quantum systems are a general route to the manipulation of multipartite quantum states, access in a physical system to a continuous quantum phase transition under…
Parallel-Electromagnetically-Induced-Transparency Near Ground-State Cooling of a Trapped-ion Crystal
Jie Zhang, Man-Chao Zhang, Yi Xie +8
We theoretically propose and experimentally demonstrate a parallel-electromagnetically-induced transparency (parallel-EIT) cooling technique for ion crystals in the Paul trap. It h…
Spontaneous nucleation and dynamics of kink defects in zigzag arrays of trapped ions
S. Ejtemaee, P. C. Haljan
The spontaneous nucleation and dynamics of topological kink defects have been studied in trapped arrays of 41-43 Yb ions. The number of kinks formed as a function of quench rate ac…
Magneto-optical Trapping of Cadmium
K. -A. Brickman, M. -S. Chang, M. Acton +5
We report the laser-cooling and confinement of Cd atoms in a magneto-optical trap, and characterize the loading process from the background Cd vapor. The trapping laser drives the…
Efficient Photoionization-Loading of Trapped Cadmium Ions with Ultrafast Pulses
L. Deslauriers, M. Acton, B. B. Blinov +16
Atomic cadmium ions are loaded into radiofrequency ion traps by photoionization of atoms in a cadmium vapor with ultrafast laser pulses. The photoionization is driven through an in…