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A formalism for magnon gravitational wave detectors
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In order to detect high frequency gravitational waves, we need a new detection method. In this paper, we develop a formalism for a gravitational wave detector using magnons in a cavity. Using Fermi normal coordinates and taking the non-relativistic limit, we obtain a Hamiltonian for magnons in gravitational wave backgrounds. Given the Hamiltonian, we show how to use the magnons for detecting high frequency gravitational waves. Furthermore, as a demonstration of the magnon gravitational wave detector, we give upper limits on GHz gravitational waves by utilizing known results of magnon experiments for an axion dark matter search.
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Cited by 2 Pith papers
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Binary gravitational waves as probes of quantum graviton states
Gravitational waves from binaries can, in principle, carry sub-Poissonian graviton statistics inherited from a squeezed primordial vacuum, offering a new signature of quantum gravity.
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Toward graviton detection via photon-graviton quantum state conversion
Photon-to-graviton conversion in a magnetic field is shown to be enhanced by squeezed photon states and by the squeezed vacuum of primordial gravitational waves, with entanglement generation proposed as a quantum signature.
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