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physica status solidi (b)

Entangled photon pairs from radiative cascades in semiconductor quantum dots

Nika Akopian, Netanel H. Lindner, Eilon Poem, Y. Berlatzky, J. E. Avron, D. Gershoni, Brian D. Gerardot, Pierre M. Petroff

Published Oct 23, 2006• 1 citation
Publisher

Abstract

Abstract Entangled photon pairs are emitted from a biexciton decay cascade of single quantum dots when spectral filtering is applied. We show this by experimentally measuring the density matrix of the polarization state of the photon pair emitted from a continuously pumped quantum dot. The matrix clearly satisfies the Peres criterion for entanglement. By applying in addition a temporal window, the quantum dot becomes an entangled light source. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

DOI
10.1002/pssb.200671523

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