56 citations · 432 across the 18 of their papers we have counts for
19 papers
Roadmap on Quantum Sensors for Vacuum Metrology
D. S. Barker, J. L. Booth, S. P. Eckel +7
We describe how laser-cooled and trapped alkali-metal atoms have been used as pressure sensors in the high- and ultra-high-vacuum regimes operating with relative uncertainties of j…
Grating magneto-optical traps with complicated level structures
D. S. Barker, P. K. Elgee, A. Sitaram +4
We study the forces and optical pumping within grating magneto-optical traps (MOTs) operating on transitions with non-trivial level structure. In contrast to the standard six-beam…
Simulations of a frequency-chirped magneto-optical trap of MgF
Kayla J. Rodriguez, Nickolas H. Pilgram, Daniel S. Barker +2
We simulate the capture process of MgF molecules into a frequency-chirped molecular MOT. Our calculations show that by chirping the frequency, the MOT capture velocity is increased…
Collision-resolved pressure sensing
Daniel S. Barker, Daniel Carney, Thomas W. LeBrun +2
Heat and pressure are ultimately transmitted via quantized degrees of freedom, like gas particles and phonons. While a continuous Brownian description of these noise sources is ade…
Accurate measurement of the loss rate of cold atoms due to background gas collisions for the quantum-based cold atom vacuum standard
Daniel S. Barker, James A. Fedchak, Jacek Kłos +4
We present measurements of thermalized collisional rate coefficients for ultra-cold Li and Rb colliding with room-temperature He, Ne, N, Ar, Kr, and Xe. In our exper…
Comparison of two multiplexed portable cold-atom vacuum standards
Lucas H. Ehinger, Bishnu P. Acharya, Daniel S. Barker +4
We compare the vacuum measured by two portable cold-atom vacuum standards (pCAVS) based on ultracold Li atoms. The pCAVS are quantum-based standards that use a priori scatterin…