340 citations · 590 across the 7 of their papers we have counts for
8 papers
Fiber-based scanning levitated nanoparticle force sensor near a metalized membrane
Andrew M. Dana, Samuel J. Borden, Nia Burrell +10
We describe a fiber-based dual-beam trap for dielectric nanospheres with the ability to transfer the trapped particles into a retro-reflective standing-wave trap within micron-rang…
Zeptonewton force sensing with nanospheres in an optical lattice
Gambhir Ranjit, Mark Cunningham, Kirsten Casey +1
Optically trapped nanospheres in high-vaccum experience little friction and hence are promising for ultra-sensitive force detection. Here we demonstrate measurement times exceeding…
Attonewton force detection using microspheres in a dual-beam optical trap in high vacuum
Gambhir Ranjit, David P. Atherton, Jordan H. Stutz +2
We describe the implementation of laser-cooled silica microspheres as force sensors in a dual-beam optical dipole trap in high vacuum. Using this system we have demonstrated trap l…
Cold atoms as a coolant for levitated optomechanical systems
Gambhir Ranjit, Cris Montoya, Andrew A. Geraci
Optically trapped dielectric objects are well suited for reaching the quantum regime of their center of mass motion in an ultra-high vacuum environment. We show that ground state c…
Observation of a classical cheshire cat in an optical interferometer
David P. Atherton, Gambhir Ranjit, Andrew A. Geraci +1
A recent neutron interferometry experiment claims to demonstrate a paradoxical phenomena dubbed the "quantum Cheshire Cat" \cite{Denkmayr2014}. We have reproduced and extended thes…
Measurement of 7p-state hyperfine structure and 7s-7p transition isotope shift in Tl and Tl
G. Ranjit, D. Kealhofer, G. D. Vukasin +1
A two-step, two-color laser spectroscopy technique has been used to measure the hyperfine splitting of the 7p excited state in Tl and Tl, as well as the iso…