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Enhanced two-photon emission from a dressed biexciton

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arxiv 1506.05050 v1 pith:3B4ALNBJ submitted 2015-06-16 quant-ph cond-mat.mes-hall

Enhanced two-photon emission from a dressed biexciton

Carlos S\'anchez Mu\~noz , Fabrice P. Laussy , Carlos Tejedor , Elena del Valle This is my paper
classification quant-ph cond-mat.mes-hall
keywords two-photonemissiondressedallowsbiexcitondrivingpairsphoton
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Radiative two-photon cascades from biexcitons in semiconductor quantum dots under resonant two-photon excitation are promising candidates for the generation of photon pairs. In this work, we propose a scheme to obtain two-photon emission that allows to operate under very intense driving fields. This approach relies on the Purcell enhancement of two-photon virtual transitions between states of the biexciton dressed by the laser. The richness provided by the biexcitonic level structure allows to reach a variety of regimes, from antibunched and bunched photon pairs with polarization orthogonal to the driving field, to polarization entangled two-photon emission. This evidences that the general paradigm of two-photon emission from a ladder of dressed states can find interesting, particular implementations in a variety of systems.

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