News

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15.07.2021

Controlling the quantum motion of a levitated particle

The quantum trajectory of a silica particle trapped in an optical tweezer is measured and controlled in real time.

11.03.2021

Measuring the gravitational field of a milligram mass

We show linear and quadratic gravitational coupling between two millimeter-sized, 90mg gold spheres.

11.09.2020

Stationary optomechanical entanglement

We provide an argument to infer stationary entanglement between light and a mechanical oscillator by observing entanglement between temporally ordered...

07.04.2020

When Maxwell’s demon takes its time

Researchers at the Universities Vienna and Stuttgart have investigated a version of Maxwell’s demon embodied by a delayed feedback force acting on a...

30.01.2020

Cooling of a levitated nanoparticle to the motional quantum ground state

We demonstrate quantum ground state cooling of a levitated nanoparticle in a room temperature environment.

17.05.2019

Information Content of the Gravitational Field of a Quantum Superposition

Our essay has won the first prize of the Gravity Research Foundation 2019 “Essays on Gravitation” contest.

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