What role does the Porter-Thomas distribution play in the analysis of quantum circuits using cross-entropy benchmarking (XEB)?
The Porter-Thomas distribution plays a important role in the analysis of quantum circuits using cross-entropy benchmarking (XEB), particularly in the context of quantum supremacy and the extraction of coherence information from random circuits. To understand this role comprehensively, it is essential to consider several foundational concepts, including the nature of random quantum circuits, the principles
What is cross-entropy benchmarking, and how is it used to evaluate the performance of quantum gates on the Sycamore processor?
Cross-entropy benchmarking (XEB) is a critical technique employed to evaluate the performance of quantum gates, particularly on quantum processors such as Google's Sycamore processor. This benchmarking method is instrumental in the field of quantum computing, where it serves as a robust tool to measure how well a quantum processor can perform complex quantum operations, which