| Autor: |
Steinlechner, Fabian, Ramelow, Sven, Jofre, Marc, Gilaberte, Marta, Jennewein, Thomas, Torres, Juan. P., Mitchell, Morgan W., Pruneri, Valerio |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Opt. Express 21, 11943-11951 (2013) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1364/OE.21.011943 |
| Popis: |
We demonstrate a compact, robust, and highly efficient source of polarization-entangled photons, based on linear bi-directional down-conversion in a novel 'folded sandwich' configuration. Bi-directionally pumping a single periodically poled KTiOPO$_4$ (ppKTP) crystal with a 405-nm laser diode, we generate entangled photon pairs at the non-degenerate wavelengths 784 nm (signal) and 839 nm (idler), and achieve an unprecedented detection rate of 11.8 kcps for 10.4 $\mu$W of pump power (1.1 million pairs / mW), in a 2.9-nm bandwidth, while maintaining a very high two-photon entanglement quality, with a Bell-state fidelity of $99.3\pm0.3$%. |
| Databáze: |
arXiv |
| Externí odkaz: |
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