Stringent and Efficient Assessment of Boson-Sampling Devices
Abstract
Boson sampling holds the potential to experimentally falsify the extended Church-Turing thesis. The computational hardness of boson sampling, however, complicates the certification that an experimental device yields correct results in the regime in which it outmatches classical computers. To certify a boson sampler, one needs to verify quantum predictions and rule out models that yield these predictions without true many-boson interference. We show that a semiclassical model for many-boson propagation reproduces coarse-grained observables that are proposed as witnesses of boson sampling. A test based on Fourier matrices is demonstrated to falsify physically plausible alternatives to coherent many-boson propagation.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 2014
- DOI:
- 10.1103/PhysRevLett.113.020502
- arXiv:
- arXiv:1312.3080
- Bibcode:
- 2014PhRvL.113b0502T
- Keywords:
-
- 03.67.Lx;
- 05.30.Jp;
- 42.50.Ar;
- Quantum computation;
- Boson systems;
- Photon statistics and coherence theory;
- Quantum Physics
- E-Print:
- 6 pages, 4 figures, version accepted by Phys. Rev. Lett