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Friday, November 15, 2019
12:00 PM - 1:00 PM
Annenberg 105

IQIM Postdoctoral and Graduate Student Seminar

Quantum Supremacy: Understanding and Calibrating the Sycamore Processor
Kevin Satzinger, Google AI Quantum,

Abstract: The recent experimental demonstration of quantum supremacy heralds the era of noisy intermediate-scale quantum (NISQ) technologies. In this experiment, we use a processor with 53 programmable superconducting qubits, Sycamore, creating quantum states in a space of dimension 253. Sycamore is built with a new 2D architecture where each qubit is coupled to up to four neighbors in a square array, with tunable coupling to each neighbor. This allows us to perform operations simultaneously across the device while maintaining high fidelity. A key challenge in operating a NISQ processor is automated calibration to optimize operations such as quantum gates and readout. In this presentation, we share an overview of the hardware involved, such as electronics, cryogenics, and superconducting circuits, and explain how we calibrate and benchmark the Sycamore processor.

For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at marciab@caltech.edu.