Silicon quantum photonic device for multidimensional controlled unitaries
Konstantina I. Koteva, Antonio A. Gentile, Brian Flynn, Stefano Paesani, Jeremy C. Adcock, Jianwei Wang, Nathan Wiebe, Mark G. Thompson, Raffaele Santagati, Anthony Laing · Frontiers in Optics / Laser Science · 2020
We present a fully reconfigurable silicon quantum photonic device capable of performing controlled four-dimensional unitary operations with 0.84 ± 0.02 fidelity. We report its characterisation by process tomography and deploy it to successfully perform a quantum model learning protocol.