Computational Complexity of Bosons in Linear Networks
Technical Report,02 Mar 2013,01 Mar 2016
THE UNIVERSITY OF QUEENSLAND BRISBANE Australia
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This project is the first to operating a BOSONSAMPLING device with a bright source of highly-pure single-photon Fock states, using a new kind of solid-state multiphoton source. In detail, the source is emission from an efficient and deterministic quantum dot-micropillar system, demultiplexed into three partially-indistinguishable single-photons, with purity 1g20 of 0.9900.001 close to the ideal value of unity, interfering in a 66 linear optics network. Our source is quiet lacking higher-order photon terms that introduce noise allowing the direct exploration of the effect of partial distinguishability in the complexity class of the resulting sampling distribution. Our demultiplexed source is between one and two orders-of-magnitude more efficient than current heralded multiphoton sources based on spontaneous parametric down conversion, allowing us to complete the BOSONSAMPLING experiment far faster than previous equivalent implementations. This intrinsic source superiority places BOSONSAMPLING with larger photon numbers within near reach.
- Nuclear Physics and Elementary Particle Physics