An Explicit Construction of Quantum Expanders
Avraham Ben-Aroya, Oded Schwartz, Amnon Ta‐Shma · arXiv (Cornell University) · 2007
Quantum expanders are a natural generalization of classical expanders. These objects were introduced and studied by Ben-Aroya and Ta-Shma and by Hastings. In this note we show how to construct explicit, constant-degree quantum expanders. The construction is essentially the classical Zig-Zag expander construction, applied to quantum expanders.