3 papers
quant-ph2025
Clifford entropy
Gianluca Cuffaro, Matthew B. Weiss
We introduce the Clifford entropy, a measure of how close an arbitrary unitary is to a Clifford unitary, which generalizes the stabilizer entropy for states. We show that this quan…
quant-ph2025
Stabilizer Entropy of Subspaces
Simone Cepollaro, Gianluca Cuffaro, Matthew B. Weiss +3
We consider the costs and benefits of embedding the states of one quantum system within those of another. Such embeddings are ubiquitous, e.g., in error correcting codes and in sym…
quant-ph2025
A simple realization of Weyl-Heisenberg covariant measurements
Sachin Gupta, Matthew B. Weiss
Informationally complete (IC) measurements are fundamental tools in quantum information processing, yet their physical implementation remains challenging. By the Naimark extension…