Title :
Coherence of entangled-photon pairs generated from separate crystals using a highly monochromatic laser pump
Author :
Sergienko, Alexander V. ; Atature, Mete ; Saleh, B.E.A. ; Teich
Author_Institution :
Dept. of Electr. & Comput. Eng. & Phys., Boston Univ., MA, USA
Abstract :
Summary form only given. We have experimentally demonstrated that the two-photon probability amplitudes of photon pairs generated using spontaneous parametric down conversion from separate nonlinear crystals, under the conditions outlined above, remain independent and cannot be used to engineer more complex quantum states. The spontaneous nature of the down-conversion process prevents pairs of photons generated in unconnected regions of interaction from having a stable phase relationship between components of their probability amplitudes. The experiment has been performed using two BaB/sub 2/O/sub 4/ nonlinear crystals, of lengths 0.5 mm and 1.5 mm respectively. They have been cut to generate phase-matched type-II collinear down conversion.
Keywords :
barium compounds; optical frequency conversion; optical materials; optical parametric devices; optical phase matching; optical pumping; 0.5 mm; 1.5 mm; BaB/sub 2/O/sub 4/; BaB/sub 2/O/sub 4/ nonlinear crystals; complex quantum states; down-conversion process; entangled-photon pairs; highly monochromatic laser pump; nonlinear crystals; parametric down conversion; phase-matched type-II collinear down conversion; photon pairs; probability amplitudes; stable phase relationship; two-photon probability amplitudes; Fiber nonlinear optics; Laser excitation; Optical fibers; Optical filters; Optical pumping; Optical solitons; Photonic crystals; Pump lasers; Quantum computing; Quantum entanglement;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2000. (QELS 2000). Technical Digest
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-608-7
