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A two-qubit photonic quantum processor and its application to solving systems of linear equations

Autor(en)
Stefanie Barz, Ivan Kassal, Martin Ringbauer, Yannick Ole Lipp, Borivoje Dakic, Alan Aspuru-Guzik, Philip Walther
Abstrakt

Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations.

Organisation(en)
Quantenoptik, Quantennanophysik und Quanteninformation
Externe Organisation(en)
Harvard University, University of Queensland
Journal
Scientific Reports
Band
4
Anzahl der Seiten
5
ISSN
2045-2322
DOI
https://doi.org/10.1038/srep06115
Publikationsdatum
08-2014
Peer-reviewed
Ja
ÖFOS 2012
103025 Quantenmechanik, 103019 Mathematische Physik
Schlagwörter
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/362dee14-8c3e-493a-a459-56acf0731385