198 citations · 1.5k across the 24 of their papers we have counts for
24 papers
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…
Acoustic tests of Lorentz symmetry using Bulk Acoustic Wave quartz oscillators
M. Goryachev, A. Lo, Ph. Haslinger +5
A new method of probing Lorentz invariance in the neutron sector is described. The method is baed on stable quartz bulk acoustic wave oscillators compared on a rotating table. Due…
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…
Equivalence Principle and Bound Kinetic Energy
Michael A. Hohensee, Holger Mueller, R. B. Wiringa
We consider the role of the internal kinetic energy of bound systems of matter in tests of the Einstein equivalence principle. Using the gravitational sector of the standard model…
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…
Influence of the Coriolis force in atom interferometry
Shau-Yu Lan, Pei-Chen Kuan, Brian Estey +2
In a light-pulse atom interferometer, we use a tip-tilt mirror to remove the influence of the Coriolis force from Earth's rotation and to characterize configuration space wave pack…
Force-Free Gravitational Redshift: Proposed Gravitational Aharonov-Bohm experiment
Michael A. Hohensee, Brian Estey, Paul Hamilton +2
We propose a feasible laboratory interferometry experiment with matter waves in a gravitational potential caused by a pair of artificial field-generating masses. It will demonstrat…
Precision tests of General Relativity with Matter Waves
Michael A. Hohensee, Holger Mueller
We review the physics of atoms and clocks in weakly curved spacetime, and how each may be used to test the Einstein Equivalence Principle (EEP) in the context of the minimal Standa…
Equivalence Principle and Gravitational Redshift
Michael A. Hohensee, Steven Chu, Achim Peters +1
We investigate leading order deviations from general relativity that violate the Einstein equivalence principle in the gravitational standard model extension. We show that redshift…
Gravitational Redshift, Equivalence Principle, and Matter Waves
Michael A. Hohensee, Brian Estey, Francisco Monsalve +7
We review matter wave and clock comparison tests of the gravitational redshift. To elucidate their relationship to tests of the universality of free fall (UFF), we define scenarios…
Reply to: Atom gravimeters and the gravitational redshift
Holger Mueller, Achim Peters, Steven Chu
We stand by our result [H. Mueller et al., Nature 463, 926-929 (2010)]. The comment [P. Wolf et al., Nature 467, E1 (2010)] revisits an interesting issue that has been known for de…
Redshift Anomalies with Universal Free-Fall
Michael A. Hohensee, Holger Mueller
For most theories which parametrize modifications of General Relativity, including those which violate the equivalence principle, gravitational redshift tests typically offer weake…
Design of an electron microscope phase plate using a focused continuous-wave laser
Holger Mueller, Jian Jin, Radostin Danev +3
We propose a Zernike phase contrast electron microscope that uses an intense laser focus to convert a phase image into a visible image. We present the relativistic quantum theory o…
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…
6 W, 1 kHz linewidth, tunable continuous-wave near-infrared laser
Sheng-wey Chiow, Sven Herrmann, Holger Mueller +1
A modified Coherent 899-21 titanium sapphire laser is injection locked to produce 6-6.5 W of single-frequency light at 852 nm. After closed-loop amplitude control and frequency sta…
Test of the isotropy of the speed of light using a continuously rotating optical resonator
Sven Herrmann, Alexander Senger, Evgeny Kovalchuk +2
We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary optical resonator and one continuously rotating on a precision air bear…
Lorentz invariance violation and charge (non--)conservation: A general theoretical frame for extensions of the Maxwell equations
Claus Laemmerzahl, Alfredo Macias, Holger Mueller
All quantum gravity approaches lead to small modifications in the standard laws of physics which lead to violations of Lorentz invariance. One particular example is the extended st…