Local Pauli measurements provide efficient, experimentally accessible tests for stabilizer code subspaces, including graph and CSS codes, while approaching the performance of …
Distributed platforms can estimate state overlap with experimentally feasible structured random circuits. Rigorous copy-complexity bounds show when shallow brickwork and Clifford …
Quantum-state fidelity estimation is studied through nonstabilizerness, connecting the resources of the target state to the measurements and samples required for certification.
Ancilla assistance removes a limitation of superposition-state methods for ranking centrality in directed graphs and broadens the graph structures accessible to the quantum …
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 …
Process overlapping tomography reconstructs selected overlapping information about quantum processes and is demonstrated experimentally as a more targeted alternative to full …
Integrated spontaneous four-wave mixing is engineered to realize a fully connected polarization-entangled network, advancing compact photonic infrastructure for multiuser quantum …
Shallow quantum circuits are used to estimate Hamiltonian spectral information, reducing circuit demands for an important primitive in quantum simulation and computational …
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 …
In this work, we propose a two-stage procedure to systematically address quantum noise inherent in quantum measurements. The idea behind it is intuitive: we first detect and then …