Measurement-altered quantum matter

Measurement-altered quantum matter

In the study of quantum matter, measurements have traditionally been viewed as a means of learning about a system.  Measurements can, nevertheless, play a more active role—generating novel quantum phenomena that may be difficult or impossible to realize in measurement-free settings.  As an interesting example, I will discuss how measurements can dramatically alter universal properties of quantum systems tuned to a phase transition.  I will also highlight a path to experimental realization in analog quantum simulators based on Rydberg atom arrays.  Finally, I will describe how these ideas inform optimization of quantum teleportation protocols against imperfections—establishing a long-term quantum science application of ‘measurement-altered quantum criticality.’