7 papers
Minimal noise in non-quantized gravity
Giuseppe Fabiano, Tomohiro Fujita, Akira Matsumura +1
An elementary prediction of the quantization of the gravitational field is that the Newtonian interaction can entangle pairs of massive objects. Conversely, in models of gravity in…
Response of interferometers to the vacuum of quantum gravity
Daniel Carney, Manthos Karydas, Allic Sivaramakrishnan
It has recently been suggested that exotic quantum gravity effects could lead to large vacuum fluctuations, potentially observable with realistic detectors. Experiments are current…
Three-dimensional squeezing of optically levitated nanospheres
Giacomo Marocco, David C. Moore, Daniel Carney
We propose a protocol to measure impulses beyond the standard quantum limit. The protocol reduces noise in all three spatial dimensions and consists of squeezing a mechanical syste…
Impulse measurements enhanced with squeezed readout light
Tsai-Chen Lee, Jacob L. Beckey, Giacomo Marocco +1
We quantify how squeezed light can reduce quantum measurement noise to levels below the standard quantum limit in impulse measurements with mechanical detectors. The broadband natu…
Superconducting Levitated Detector of Gravitational Waves
Daniel Carney, Gerard Higgins, Giacomo Marocco +1
A magnetically levitated mass couples to gravity and can act as an effective gravitational wave detector. We show that a superconducting sphere levitated in a quadrupolar magnetic…
On the quantum mechanics of entropic forces
Daniel Carney, Manthos Karydas, Thilo Scharnhorst +2
It was conjectured thirty years ago that gravity could arise from the entropic re-arrangement of information. In this paper, we offer a set of microscopic quantum models which real…