Demystifying Graviton Detection

by Prof. Igor Pikovski

University of Stockholm and Stevens Institute

at Quantum optics seminar

Wed, 18 Mar 2026, 16:00
Zoom only

Abstract

Zoom Link: https://us02web.zoom.us/j/89988842393?pwd=a0VfzvW3fec3vxBZQoAb8kQsievEwL.1

Abstract:
Gravitons are a central prediction of quantum gravity, yet their detection has long been thought impossible. We recently showed, however, that single gravitons can be detected using quantum sensing with macroscopic quantum resonators, conceptually analogous to the photoelectric detection of photons. In this talk, I will first give a brief overview of recent ideas for testing quantum signatures of gravity in table-top experiments. I will then turn to the detection of individual, on-shell gravitons, which represents a conceptually new approach. After revisiting the conventional arguments for the impossibility of graviton detection, I will present the key insights that overturn this view and explain the novelties that make detection feasible. Finally, I will show how such detectors could be implemented in the near future and how they go beyond mere particle detection: they are sensitive to the quantum statistical properties of gravitational radiation and enable tests of key predictions of linearized quantum gravity - echoing the first explorations of quantum theory in the early 20th century.

Created on 14-03-2026 by Folman, Ron (folman)
Updaded on 14-03-2026 by Folman, Ron (folman)