Witness assisted eigenspectra solver on a silicon quantum photonic simulator
Antonio A. Gentile, Raffaele Santagati, Jianwei Wang, Stefano Paesani, Nathan Wiebe, Jarrod R. McClean, Damien Bonneau, Joshua W. Silverstone, Sam Morley-Short, Peter Shadbolt, David P. Tew, X. Zhou, Jeremy L. O’Brien, Mark G. Thompson · 2018
We demonstrate a new protocol capable of finding ground and excited states of physical Hamiltonians via an eigenstate witness. The experimental test employs a silicon quantum photonic device, embedding arbitrary controlled unitary operations.