3 papers
quant-ph2026
Direct fidelity estimation through joint fiducial grouping
Júlia Barberà-Rodríguez, Arthur Strauss
Fault-tolerant quantum computation hinges on the requirement for low physical error rates. Reaching below threshold regime requires the accounting of circuit dependent noise, that…
quant-ph2026
Strong unitary designs in optimal depth and space
Teodor Parella-Dilmé, Júlia Barberà-Rodríguez, Salvatore F. E. Oliviero +1
Unitary designs provide finite-moment approximations to Haar-random unitaries, with wide-ranging applications across physics and quantum information, from scrambling and black-hole…
quant-ph2025
Sampling Groups of Pauli Operators to Enhance Direct Fidelity Estimation
Júlia Barberà-Rodríguez, Mariana Navarro, Leonardo Zambrano
Direct fidelity estimation is a protocol that estimates the fidelity between an experimental quantum state and a target pure state. By measuring the expectation values of Pauli ope…