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A quantum dot based bright source of entangled photon pairs operating at 53 K
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10.1063/1.3475487
/content/aip/journal/apl/97/8/10.1063/1.3475487
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/8/10.1063/1.3475487

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic of the biexciton radiative cascade. (b) Schematic of the source: a single QD in inserted in a photonic molecule consisting in two micropillars with diameter, , and center to center distance . (c) Top: photoluminescence spectrum of the photonic molecule recorded at 38 K. Bottom: PL intensity in color log-scale as a function of temperature and energy. (d) Collected X (square) and XX (circle) photons per excitation pulse as a function of power.

Image of FIG. 2.
FIG. 2.

(a) Second order pair correlation measured for copolarized and cross-polarized X and XX photons, in three measurement bases. (b) Zoom on the zero delay peak for the circularly polarized photon correlation. The signal is detected using 500 ps wide temporal bins.

Image of FIG. 3.
FIG. 3.

(a) Correlation polarization in circular basis as a function of time delay for three excitation powers. (b) Fidelity to the Bell state. (c) Density matrix of the two photon state obtained for positive delays at 53 K. For simplicity, the absolute value of the imaginary part is plotted, the sign of the imaginary part matrix elements is indicated in the table (inset).

Tables

Generic image for table
Table I.

Table summarizing the various parameters characterizing the entanglement of the two-photon state when taking into account bin 0 counts, bin 1 counts, or all positive delays counts.

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/content/aip/journal/apl/97/8/10.1063/1.3475487
2010-08-23
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A quantum dot based bright source of entangled photon pairs operating at 53 K
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/8/10.1063/1.3475487
10.1063/1.3475487
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