A solid state source of photon triplets based on quantum dot molecules

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DOIResolve DOI: http://doi.org/10.1038/ncomms15716
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TypeArticle
Journal titleNature Communications
ISSN2041-1723
Volume8
Article number15716
Pages# of pages: 8
Subjectquantum dots; quantum information
AbstractProducing advanced quantum states of light is a priority in quantum information technologies. In this context, experimental realizations of multipartite photon states would enable improved tests of the foundations of quantum mechanics as well as implementations of complex quantum optical networks and protocols. It is favourable to directly generate these states using solid state systems, for simpler handling and the promise of reversible transfer of quantum information between stationary and flying qubits. Here we use the ground states of two optically active coupled quantum dots to directly produce photon triplets. The formation of a triexciton in these ground states leads to a triple cascade recombination and sequential emission of three photons with strong correlations. We record 65.62 photon triplets per minute under continuous-wave pumping, surpassing rates of earlier reported sources. Our structure and data pave the way towards implementing multipartite photon entanglement and multi-qubit readout schemes in solid state devices.
Publication date
PublisherNature Publishing Group
LanguageEnglish
AffiliationAdvanced Electronics and Photonics; National Research Council Canada
Peer reviewedYes
NPARC number23002586
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Record identifier92220faa-2c42-4494-91cb-e3d3df9962d3
Record created2017-12-04
Record modified2017-12-04
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