Schr\"odinger cat states of a 16-microgram mechanical oscillator
- URL: http://arxiv.org/abs/2211.00449v1
- Date: Tue, 1 Nov 2022 13:29:44 GMT
- Title: Schr\"odinger cat states of a 16-microgram mechanical oscillator
- Authors: Marius Bild, Matteo Fadel, Yu Yang, Uwe von L\"upke, Phillip Martin,
Alessandro Bruno, Yiwen Chu
- Abstract summary: The superposition principle is one of the most fundamental principles of quantum mechanics.
Here we demonstrate the preparation of a mechanical resonator with an effective mass of 16.2 micrograms in Schr"odinger cat states of motion.
We show control over the size and phase of the superposition and investigate the decoherence dynamics of these states.
- Score: 54.35850218188371
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The superposition principle is one of the most fundamental principles of
quantum mechanics. According to the Schr\"odinger equation, a physical system
can be in any linear combination of its possible states. While the validity of
this principle is routinely validated for microscopic systems, it is still
unclear why we do not observe macroscopic objects to be in superpositions of
states that can be distinguished by some classical property. Here we
demonstrate the preparation of a mechanical resonator with an effective mass of
16.2 micrograms in Schr\"odinger cat states of motion, where the constituent
atoms are in a superposition of oscillating with two opposite phases. We show
control over the size and phase of the superposition and investigate the
decoherence dynamics of these states. Apart from shedding light at the boundary
between the quantum and the classical world, our results are of interest for
quantum technologies, as they pave the way towards continuous-variable quantum
information processing and quantum metrology with mechanical resonators.
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