Polarization entangled photons from quantum dots embedded in nanowires.
Nano Lett
; 14(12): 7107-14, 2014 Dec 10.
Article
em En
| MEDLINE
| ID: mdl-25395237
ABSTRACT
In this Letter, we present entanglement generated from a novel structure a single InAsP quantum dot embedded in an InP nanowire. These structures can grow in a site-controlled way and exhibit high collection efficiency; we detect 0.5 million biexciton counts per second coupled into a single mode fiber with a standard commercial avalanche photo diode. If we correct for the known setup losses and detector efficiency, we get an extraction efficiency of 15(3) %. For the measured polarization entanglement, we observe a fidelity of 0.76(2) to a reference maximally entangled state as well as a concurrence of 0.57(6).
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2014
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Article