Phys. Rev. Lett. 94, 073601 (2005) [4 pages]Temporal Shaping of Entangled PhotonsReceived 18 November 2004; published 22 February 2005 We experimentally demonstrate shaping of the two-photon wave function of entangled-photon pairs, utilizing coherent pulse-shaping techniques. By performing spectral-phase manipulations we tailor the second-order correlation function of the photons exactly like a coherent ultrashort pulse. To observe the shaping we perform sum-frequency generation with an ultrahigh flux of entangled photons. At the appropriate conditions, sum-frequency generation performs as a coincidence detector with an ultrashort response time (∼100 fs), enabling a direct observation of the two-photon wave function. This property also enables us to demonstrate background-free, high-visibility two-photon interference oscillations. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.073601
DOI:
10.1103/PhysRevLett.94.073601
PACS:
42.50.Dv, 03.67.–a, 42.50.St, 42.65.Ky
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