Generation of two identical photons from a quantum dot in a microcavity

Details Generation of two identical photons from a quantum dot in a microcavity Generation of two identical photons from a quantum dot in a microcavity

2011-07-05

arxiv.org/abs/1107.0953v1

New J. Phys. 13, 113014 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1088/1367-2630/13/11/113014

We propose and characterize a two-photon emitter in a highly polarised, monochromatic and directional beam, realized by means of a quantum dot embedded in a linearly polarized cavity. In our scheme, the cavity frequency is tuned to half the frequency of the biexciton (two excitons with opposite spins) and largely detuned from the excitons thanks to the large biexciton binding energy. We show how the emission can be Purcell enhanced by several orders of magnitude into the two-photon channel for available experimental systems.

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