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QI: Fachverband Quanteninformation

QI 6: Quantum Computing and Algorithms II

QI 6.2: Hauptvortrag

Mittwoch, 22. September 2021, 11:15–11:45, H3

The 3rd quantum revolution: Quantum Algorithmic Experiments. — •Dorit Aharonov — Hebrew University of Jerusalem, Israel

Following the second quantum revolution, which had completely undermined how we think of algorithms, the last decade gave birth to a third quantum revolution - which has changed the way we think of physical experiments. I will demonstrate this with some examples of how quantum computational ideas such as quantum error correction and quantum algorithms can be used to enhance conventional quantum experiments, to achieve increased efficiency and precision in sensing, metrology, and more. I will then describe my recent attempt together with Jordan Cotler and Xiaoliang Qi to generalize these developments and provide a universal mathematical model for quantum experiments, which we call Quantum algorithmic measurements (QUALMs). In this framework, we show that certain experimental tasks (such as determining the time reversal symmetry of a many body quantum system), can be performed exponentially more efficiently if enhanced with even simple quantum computational abilities. Improvements on our initial protocols were recently implemented experimentally on Google's Sycamore. These and other results which I will mention, suggest that quantum experiments constitute a new playground in which quantum-computational advantages can be exhibited.