Title | Coalescence of Single Photons Emitted by Disparate Single-Photon Sources: The Example of InAs Quantum Dots and Parametric Down-Conversion Sources |
Publication Type | Journal Article |
Year of Publication | 2011 |
Authors | S. V. Polyakov, A. Muller, E. B. Flagg, A. Ling, N. Borjemscaia, E. Van Keuren, A. L. Migdall, and G. S. Solomon |
Journal | Phys. Rev. Lett. |
Volume | 107 |
Pagination | 157402 |
Date Published | oct |
ISSN | 0031-9007 |
Abstract | Single photons produced by fundamentally dissimilar physical processes will in general not be indistinguishable. We show how photons produced from a quantum dot and by parametric down-conversion in a nonlinear crystal can be manipulated to be indistinguishable. The measured two-photon coalescence probability is 16%, and is limited by quantum-dot decoherence. Temporal filtering to the quantum-dot coherence time and accounting for detector time response increases this to 61% while retaining 25% of the events. This technique can connect different elements in a scalable quantum network. |
DOI | 10.1103/PhysRevLett.107.157402 |