Abstract:
:A non-classical light source emitting pairs of identical photons represents a versatile resource of interdisciplinary importance with applications in quantum optics and quantum biology. To date, photon twins have mostly been generated using parametric downconversion sources, relying on Poissonian number distributions, or atoms, exhibiting low emission rates. Here we propose and experimentally demonstrate the efficient, triggered generation of photon twins using the energy-degenerate biexciton-exciton radiative cascade of a single semiconductor quantum dot. Deterministically integrated within a microlens, this nanostructure emits highly correlated photon pairs, degenerate in energy and polarization, at a rate of up to (234±4) kHz. Furthermore, we verify a significant degree of photon indistinguishability and directly observe twin-photon emission by employing photon-number-resolving detectors, which enables the reconstruction of the emitted photon number distribution. Our work represents an important step towards the realization of efficient sources of twin-photon states on a fully scalable technology platform.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Heindel T,Thoma A,von Helversen M,Schmidt M,Schlehahn A,Gschrey M,Schnauber P,Schulze JH,Strittmatter A,Beyer J,Rodt S,Carmele A,Knorr A,Reitzenstein Sdoi
10.1038/ncomms14870subject
Has Abstractpub_date
2017-04-03 00:00:00pages
14870issn
2041-1723pii
ncomms14870journal_volume
8pub_type
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