Sensing Quantum Nature of Primordial Gravitational Waves Using Quantum Electromagnetic Fields
| Autor: | Arani, F. Shojaei, Harouni, M. Bagheri, Lamine, B., Blanchard, A. |
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| Přispěvatelé: | Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
LISA
radiation: electromagnetic Hamiltonian formalism background: primordial interferometer oscillator: quantum gravitational radiation: background gravitational radiation: primordial power spectrum stability: optical Doppler effect laser gravitational radiation: quantization photon: deflection phase shift gravitation electromagnetic field [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] broadening signature |
| Popis: | We establish a new formalism to describe the interaction of an optical system with a background of gravitational waves based on optical medium analogy. Besides reproducing the basic formula for the response of a LISA-type interferometer in terms of the phase shift of light, other classical observables of the electromagnetic field such as light-bending, walk-off angle and Stokes parameters are investigated. At the quantum level, this approach enables us to construct a full quantum Hamiltonian describing both electromagnetic and gravitational waves as quantum entities. It turns out that the effective coupling between the electromagnetic field and gravitational wave background resembles an opto-mechanical coupling. This points to a new strategy to evident non-classical nature of gravity within the reach of future optical experiments. As an illustrative application, we investigate the optical quadrature variance as well as the power spectrum of a laser field interacting with a background of primordial gravitational wave. The effect of the relic background of quantized gravitational waves on the optical variance is analogous to the effect of a classical mechanical oscillator, which stabilizes the optical variance. It also acts similar to a Doppler-broadening mechanism which broadens the line-width of the laser field of optical frequency by $10^{-6}$Hz. This line-width broadening and also appearance of side-bands in the spectrum of light could serve as signatures of the highly squeezed nature of primordial gravitational waves. |
| Databáze: | OpenAIRE |
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