Peter Asenbaum
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View article: Magnetic recoil interferometer in a uniform gravitational field. Comment on Observation of the quantum equivalence principle for matter-waves
Magnetic recoil interferometer in a uniform gravitational field. Comment on Observation of the quantum equivalence principle for matter-waves Open
The calculation of the phase shift of a matter-wave interferometer looks different for different coordinate choices or the addition of a uniform gravitational field, but the final result of the observable phase shift does not depend on the…
View article: Remote sensing of a levitated superconductor with a flux-tunable microwave cavity
Remote sensing of a levitated superconductor with a flux-tunable microwave cavity Open
We present a cavity-electromechanical system comprising a superconducting quantum interference device which is embedded in a microwave resonator and coupled via a pickup loop to a 6-μg magnetically levitated superconducting sphere. The mot…
View article: Matter waves and clocks do not observe uniform gravitational fields
Matter waves and clocks do not observe uniform gravitational fields Open
In a uniform gravitational field, classical test objects fall universally. Any reference object or observer will fall in the same universal manner. Therefore, a uniform gravitational field cannot create dynamics between observers and class…
View article: Remote sensing of a levitated superconductor with a flux-tunable microwave cavity
Remote sensing of a levitated superconductor with a flux-tunable microwave cavity Open
We present a cavity-electromechanical system comprising a superconducting quantum interference device which is embedded in a microwave resonator and coupled via a pick-up loop to a 6 $μ$g magnetically-levitated superconducting sphere. The …
View article: Inference of gravitational field superposition from quantum measurements
Inference of gravitational field superposition from quantum measurements Open
Experiments are beginning to probe the interaction of quantum particles with gravitational fields beyond the uniform-field regime. In nonrelativistic quantum mechanics, the gravitational field in such experiments can be written as a superp…
View article: Inference of gravitational field superposition from quantum measurements
Inference of gravitational field superposition from quantum measurements Open
Experiments are beginning to probe the interaction of quantum particles with gravitational fields beyond the uniform-field regime. In non-relativistic quantum mechanics, the gravitational field in such experiments can be written as a super…
View article: Replication Data for: Observation of a gravitational Aharonov-Bohm effect
Replication Data for: Observation of a gravitational Aharonov-Bohm effect Open
Replication data for the publication "Observation of a gravitational Aharonov-Bohm effect"
View article: 40 W, 780 nm laser system with compensated dual beam splitters for atom interferometry
40 W, 780 nm laser system with compensated dual beam splitters for atom interferometry Open
We demonstrate a narrow-linewidth 780 nm laser system with up to power and a frequency modulation bandwidth of 230 MHz. Efficient overlap on nonlinear optical elements combines two pairs of phase-locked frequency components into a sin…
View article: Silicon microcavity arrays with open access and a finesse of half a million
Silicon microcavity arrays with open access and a finesse of half a million Open
Optical resonators are increasingly important tools in science and technology. Their applications range from laser physics, atomic clocks, molecular spectroscopy, and single-photon generation to the detection, trapping and cooling of atoms…
View article: Effective Inertial Frame in an Atom Interferometric Test of the Equivalence Principle
Effective Inertial Frame in an Atom Interferometric Test of the Equivalence Principle Open
In an ideal test of the equivalence principle, the test masses fall in a common inertial frame. A real experiment is affected by gravity gradients, which introduce systematic errors by coupling to initial kinematic differences between the …
View article: Effective inertial frame in an atom interferometric test of the equivalence principle
Effective inertial frame in an atom interferometric test of the equivalence principle Open
In an ideal test of the equivalence principle, the test masses fall in a common inertial frame. A real experiment is affected by gravity gradients, which introduce systematic errors by coupling to initial kinematic differences between the …
View article: Phase Shift in an Atom Interferometer due to Spacetime Curvature across its Wave Function
Phase Shift in an Atom Interferometer due to Spacetime Curvature across its Wave Function Open
Spacetime curvature induces tidal forces on the wave function of a single quantum system. Using a dual light-pulse atom interferometer, we measure a phase shift associated with such tidal forces. The macroscopic spatial superposition state…
View article: Response to "Verifying quantum superpositions at metre scales"
Response to "Verifying quantum superpositions at metre scales" Open
The preceding BCA (Stamper-Kurn et. al., arXiv:1607.01454) asserts that our observation of interference contrast in a half-metre-scale atom interferometer (Kovachy et. al., Nature 528, 530-3 (2015)) does not prove the existence of macrosco…