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.
Original language | English |
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Article number | 081712 |
Pages (from-to) | - |
Number of pages | 4 |
Journal | Journal of Applied Physics |
Volume | 101 |
Issue number | 8 |
DOIs | |
Publication status | Published - 27 Apr 2007 |