Physics Program Presents

Quantum Information Scrambling for Precision Metrology and Tests of Quantum Advantage

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.

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Prof. Bentsen is a theoretical physicist working at the intersection of Quantum Information Science (QIS) and Atomic Molecular & Optical physics (AMO). He obtained his Ph.D. from Stanford University in 2019 working in the Schleier-Smith lab, where he helped to design, build, and operate a Cavity QED experiment engineered to rapidly entangle ensembles of Rubidium 87 atoms for applications in precision metrology and fundamental studies of quantum many-body physics. During his postdoc in the Swingle group at Brandeis University he focused on theoretical models of quantum information scrambling including studies of entanglement phase transitions in random quantum circuits. He is currently a faculty member in the Physics Department at The College of William & Mary, where his research group focuses on applying random quantum circuit models to information processing and precision metrology applications.

For more information, call 845-758-6822, or e-mail [email protected].

Time: 12:00 pm EST/GMT-5

Location: Brody Lab - Hegeman 107

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