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25 April 2024

» arxiv » 1212.2622

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Experimental Boson Sampling
Justin B. Spring ; Benjamin J. Metcalf ; Peter C. Humphreys ; W. Steven Kolthammer ; Xian-Min Jin ; Marco Barbieri ; Animesh Datta ; Nicholas Thomas-Peter ; Nathan K. Langford ; Dmytro Kundys ; James C. Gates ; Brian J. Smith ; Peter G.R. Smith ; Ian A. Walmsley ;
Date:	11 Dec 2012
Abstract:	While universal quantum computers ideally solve problems such as factoring integers exponentially more efficiently than classical machines, the formidable challenges in building such devices motivate the demonstration of simpler, problem-specific algorithms that still promise a quantum speedup. We construct a quantum boson sampling machine (QBSM) to sample the output distribution resulting from the nonclassical interference of photons in an integrated photonic circuit, a problem thought to be exponentially hard to solve classically. Unlike universal quantum computation, boson sampling merely requires indistinguishable photons, linear state evolution, and detectors. We benchmark our QBSM with three and four photons and analyze sources of sampling inaccuracy. Our studies pave the way to larger devices that could offer the first definitive quantum-enhanced computation.
Source:	arXiv, 1212.2622
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