QUANTUM INFORMATION, GRAVITY AND FUNDAMENTAL QUANTUM MECHANICS

Two theoretical paradigms of contemporary physics, quantum mechanics and gravity theory, are at the heart of our ability to describe, respectively, the behavior of matter around us and the structure of the universe. These two pillars of our knowledge underlie different concepts of “physical reality”.

In quantum mechanics, reality is shaped by the measurement process, since the flow of information between system and observer affects the state of the system. In gravity theory physical reality is inherently related to the structure of space-time emerging naturally from the symmetries of the theory.

Reconciling these two views, framing gravity and quantum mechanics in a common theoretical framework, is of crucial relevance for a wealth of problems ranging from black-hole physics to irreversibility of time in quantum mechanics.

Our group, joining the forces of researchers coming from different fields of quantum physics, aims at studying these fundamental problems employing insights and techniques  originally developed in quantum information theory, quantum optics and quantum many-body theory, such as entanglement and quantum coherence.

First image of a black hole obtained using Event Horizon Telescope observations of the center of the galaxy M87. Credit: Event Horizon Telescope Collaboration.

The observability of black holes  achieved in 2016 by the LIGO  and VIRGO gravitational waves telescope and by the Event Horizon Collaboration has opened new pathways in gravity theory and it provides unprecedented tools to observe the boudaries of spacetime.