Nonlocal modulations on the temporal and spectral profiles of an entangled photon pair

Year: 2004

Authors: Viciani S., Zavatta A., Bellini M.

Autors Affiliation: Ist. Nationale di Ottica Applicata, Largo E. Fermi, 6, 1-50125 Florence, Italy; Europ. Lab. for Nonlinear Spectrosc., Ist. Naz. Per la Fis. Della Materia, Florence, Italy

Abstract: We present an experimental and theoretical analysis of the energy-time entanglement properties of a two-photon state generated by pulsed spontaneous parametric down-conversion. Different methods of spectral or temporal shaping of one of the two photons have allowed the observation of nonlocal modulations in the autocorrelation or in the spectrum of the other, by coincidence measurements. Either a monochromator or etalon filters have been used to shape the idler photon while observing the conditioned signal autocorrelation
with a Michelson interferometer. Alternatively, the unbalanced interferometer has been used to shape the signal photon while measuring the conditioned idler spectrum with the monochromator. The role of the pump spectrum has been investigated by shaping it with additional filters. A theoretical treatment has allowed us to completely describe all the observed features as a function of the different experimental parameters.


Volume: 69 (5)      Pages from: 053801-1  to: 053801-9

More Information: Ministero dell’Istruzione, dell’Università e della Ricerca, MIUR. Physics Department, University of Michigan. – ( Cambridge University Press , Cambridge, England, 1995 ). This work was supported by the Italian Ministry of University and Scientific Research (MIUR). The authors would also like to thank the Department of Physics of the University of Florence for the kind hospitality and F. Marin for useful discussions.
KeyWords: Crystals; Etalons; Functions; Laser pulses; Light polarization; Modulation; Monochromators; Quantum theory; Signal processing; Ultraviolet radiation, Etalon filters; Non-local modulation; Parametric down-conversion (PDC); Signal autocorrelation functions, Photons; Entanglement; non-local effects

Citations: 31
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