Prof. Gregory Bentsen
Department of Physics
University of Virginia

Abstract

Quantum technologies promise to revolutionize information processing and precision measurement tasks. Key to these applications is the generation of many-body entanglement, which describes correlations between particles that cannot be explained classically. Whereas conventional quantum algorithms — such as Shor’s algorithm for factoring large numbers — rely on highly structured patterns of entanglement, in this talk I will introduce a class of `scrambled’ quantum states featuring entanglement that is random and unstructured. These scrambled states can be generated from short random quantum circuits with randomly chosen gates at each step. Despite their lack of structure, the resulting many-body states can be harnessed for precision metrology applications and for establishing tests of quantum advantage over classical hardware.