Local Pauli measurements provide efficient, experimentally accessible tests for stabilizer code subspaces, including graph and CSS codes, while approaching the performance of …
Adaptive local protocols efficiently verify the three-qubit subspace spanned by GHZ and W states and expose fundamental limits on which low-dimensional entangled subspaces can be …
Collective measurements across stored copies can substantially reduce the cost of entangled-state verification. The work gives optimal two-copy strategies for graph states and a …