2 papers
quant-ph2026
An exponential query advantage from access to Stinespring dilation unitaries in quantum channel learning
Manaki Arihara, Satoshi Yoshida, Philip Taranto +1
We present a learning task for quantum channels that exhibits an exponential separation in query complexity (in terms of the number of qubits) between two access models: i) black-b…
quant-ph2026
Sample-Query Interconversion of Block Encoding of Unknown Quantum States
Manaki Arihara, Mio Murao
Block encoding embeds a matrix as a sub-block of a unitary matrix and serves as a fundamental input model for quantum algorithms based on quantum singular value transformation, ena…