Details

Autor(en) / Beteiligte

• Broome, Matthew A.
• Fedrizzi, Alessandro
• Rahimi-Keshari, Saleh
• Dove, Justin
• Aaronson, Scott
• Ralph, Timothy C.
• White, Andrew G.

Titel

Photonic Boson Sampling in a Tunable Circuit

Ist Teil von

• Science (American Association for the Advancement of Science), 2013-02, Vol.339 (6121), p.794-798

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2013

Link zum Volltext

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• Quantum computers are unnecessary for exponentially efficient computation or simulation if the Extended Church-Turing thesis is correct. The thesis would be strongly contradicted by physical devices that efficiently perform tasks believed to be intractable for classical computers. Such a task is boson sampling: sampling the output distributions of n bosons scattered by some passive, linear unitary process. We tested the central premise of boson sampling, experimentally verifying that three-photon scattering amplitudes are given by the permanents of submatrices generated from a unitary describing a six-mode integrated optical circuit. We find the protocol to be robust, working even with the unavoidable effects of photon loss, non-ideal sources, and imperfect detection. Scaling this to large numbers of photons should be a much simpler task than building a universal quantum computer.