Experimental boson sampling

Autor(en)

Max Tillmann, Borivoje Dakic, Rene Heilmann, Stefan Nolte, Alexander Szameit, Philip Walther

Abstrakt

Universal quantum computers¹ promise a dramatic increase in speed over classical computers, but their full-size realization remains challenging². However, intermediate quantum computational models^{3, 4, 5}

have been proposed that are not universal but can solve problems that

are believed to be classically hard. Aaronson and Arkhipov⁶

have shown that interference of single photons in random optical

networks can solve the hard problem of sampling the bosonic output

distribution. Remarkably, this computation does not require

measurement-based interactions^{7, 8} or adaptive feed-forward techniques⁹.

Here, we demonstrate this model of computation using laser-written

integrated quantum networks that were designed to implement unitary

matrix transformations. We characterize the integrated devices using an in situ reconstruction method and observe three-photon interference^{10, 11, 12}

that leads to the boson-sampling output distribution. Our results set a

benchmark for a type of quantum computer with the potential to

outperform a conventional computer through the use of only a few photons

and linear-optical elements¹³.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Friedrich-Schiller-Universität Jena

Journal

Nature Photonics

Band

7

Seiten

540-544

Anzahl der Seiten

5

ISSN

1749-4885

DOI

https://doi.org/10.1038/NPHOTON.2013.102

Publikationsdatum

07-2013

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik, 103025 Quantenmechanik, 103040 Photonik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/4e66b559-81d7-49f9-b879-96017242c4d5