Spin cat states in a ferromagnetic insulator
- URL: http://arxiv.org/abs/2009.00128v2
- Date: Fri, 11 Sep 2020 09:56:05 GMT
- Title: Spin cat states in a ferromagnetic insulator
- Authors: Sanchar Sharma and Victor A.S.V. Bittencourt and Alexy D. Karenowska
and Silvia Viola Kusminskiy
- Abstract summary: We propose a scheme to generate a magnetization cat state using a conventional setup of a macroscopic ferromagnet in a microwave cavity.
We find that a cat state with two components separated by $sim5hbar$ is feasible and briefly discuss potential experimental setups that can achieve it.
- Score: 0.0
- License: http://creativecommons.org/licenses/by-nc-sa/4.0/
- Abstract: Generating non-classical states in macroscopic systems is a long standing
challenge. A promising platform in the context of this quest are novel hybrid
systems based on magnetic dielectrics, where photons can couple strongly and
coherently to magnetic excitations, although a non-classical state therein is
yet to be observed. We propose a scheme to generate a magnetization cat state,
i.e. a quantum superposition of two distinct magnetization directions, using a
conventional setup of a macroscopic ferromagnet in a microwave cavity. Our
scheme uses the ground state of an ellipsoid shaped magnet, which displays
anisotropic quantum fluctuations akin to a squeezed vacuum. The magnetization
collapses to a cat state by either a single-photon or a parity measurement of
the microwave cavity state. We find that a cat state with two components
separated by $\sim5\hbar$ is feasible and briefly discuss potential
experimental setups that can achieve it.
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