198 citations · 1.5k across the 24 of their papers we have counts for
11 papers · 1 filter
Measuring gravity by holding atoms
Cristian D. Panda, Matthew J. Tao, Miguel Ceja +1
Despite being the dominant force of nature on large scales, gravity remains relatively elusive to experimental measurement. Many questions remain, such as its behavior at small sca…
Atomic gravimeter robust to environmental effects
Cristian D. Panda, Matt Tao, Miguel Ceja +2
Atomic accelerometers and gravimeters are usually based on freely-falling atoms in atomic fountains, which not only limits their size, but also their robustness to environmental fa…
Dynamics of a buffer-gas-loaded, deep optical trap for molecules
Ashwin Singh, Lothar Maisenbacher, Ziguang Lin +3
We describe an approach to optically trapping small, chemically stable molecules at cryogenic temperatures by buffer-gas loading a deep optical dipole trap. The ~10 K trap depth wi…
Laser frequency stabilization by combining modulation transfer and frequency modulation spectroscopy
Fei Zi, Xuejian Wu, Weicheng Zhong +5
We present a hybrid laser frequency stabilization method combining modulation transfer spectroscopy (MTS) and frequency modulation spectroscopy (FMS) for the cesium D2 transition.…
Testing sub-gravitational forces on atoms from a miniature, in-vacuum source mass
Matt Jaffe, Philipp Haslinger, Victoria Xu +5
Gravity is the weakest fundamental interaction and the only one that has not been measured at the particle level. Traditional experimental methods, from astronomical observations t…
Recoil-sensitive lithium interferometer without a subrecoil sample
Kayleigh Cassella, Eric Copenhaver, Brian Estey +3
We report simultaneous conjugate Ramsey-Bordé interferometers with a sample of low-mass (lithium-7) atoms at 50 times the recoil temperature. We optically pump the atoms to a magne…
Controlling the Multiport Nature of Bragg Diffraction in Atom Interferometry
Richard H Parker, Chenghui Yu, Brian Estey +3
Bragg diffraction has been used in atom interferometers because it allows signal enhancement through multiphoton momentum transfer and suppression of systematics by not changing th…
High-resolution atom interferometers with suppressed diffraction phases
Brian Estey, Chenghui Yu, Holger Müller +2
We experimentally and theoretically study the diffraction phase of large-momentum transfer beam splitters in atom interferometers based on Bragg diffraction. We null the diffractio…
Sisyphus Cooling of Lithium
Paul Hamilton, Geena Kim, Trinity Joshi +3
Laser cooling to sub-Doppler temperatures by optical molasses is thought to be inhibited in atoms with unresolved, near-degenerate hyperfine structure in the excited state. We demo…
Antimatter interferometry for gravity measurements
Paul Hamilton, Andrey Zhmoginov, Francis Robicheaux +3
We describe a light-pulse atom interferometer that is suitable for any species of atom and even for electrons and protons as well as their antiparticles, in particular for testing…
Atom interferometers with scalable enclosed area
Holger Mueller, Sheng-wey Chiow, Sven Herrmann +1
Bloch oscillations (i.e., coherent acceleration of matter waves by an optical lattice) and Bragg diffraction are integrated into light-pulse atom interferometers with large momentu…