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Generation of narrow-band hyperentangled nondegenerate paired photons

Authors Yan, Hui
Zhang, Shanchao
Chen, Jiefei
Loy, M.M.T.
Wong, G.K.L.
Du, Shengwang
Issue Date 2011
Source Physical review letters , v. 106, (3), 2011, Jan, article number 033601
Summary We report the generation of nondegenerate narrow-bandwidth paired photons with time-frequency and polarization entanglements from laser cooled atoms. We observe the two-photon interference caused by Rabi splitting with a coherence time of about 30 ns and a visibility of 81.8% which verifies the time-frequency entanglement of the paired photons. The polarization entanglement is confirmed by polarization correlation measurements which exhibit a visibility of 89.5% and characterized by quantum-state tomography with a fidelity of 90.8%. Taking into account the transmission losses and duty cycle, we estimate that the system generates hyperentangled paired photons into opposing single-mode fibers at a rate of 320 pairs per second. © 2011 American Physical Society.
ISSN 0031-9007
Rights Physical Review Letters © copyright (2011) American Physical Society. The Journal's web site is located at
Language English
Format Article
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