Detecting the effects of quantum gravity with exceptional points in optomechanical sensors

Abstract

In this manuscript, working with a binary mechanical system, we examine the effect of quantum gravity on the exceptional points of the system. On the one side, we find that the exceedingly weak effect of quantum gravity can be sensed via pushing the system towards a second-order exceptional point, where the spectra of the non-Hermitian system exhibits non-analytic and even discontinuous behavior. On the other side, the gravity perturbation will affect the sensitivity of the system to deposition mass. In order to further enhance the sensitivity of the system to quantum gravity, we extend the system to the other one which has a higher-order (third-order) exceptional point. Our work provides a feasible way to use exceptional points as a new tool to explore the effect of quantum gravity.

10 pages, 9 figures

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Cited by in corpus (5)

• Massive quantum systems as interfaces of quantum mechanics and gravity
• Resolving the topology of encircling multiple exceptional points
• Enhancing the sensitivity of nonlinearity sensors through homodyne detection in dissipatively coupled systems
• Exponentially enhanced gravitationally induced entanglement between quantum systems with a two-phonon drive
• Problems with Modified Commutators