Title :
Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons
Author :
Baek, So-Young ; Straupe, Stanislav S. ; Shurupov, Alexander P. ; Kulik, Sergei P. ; Kim, Yoon-Ho
Author_Institution :
Dept. of Phys., Pohang Univ. of Sci. & Technol., Pohang
Abstract :
We report an experiment on preparation and characterization of general four-dimensional quantum states using ultrafast-pumped frequency-nondegenerate spontaneous parametric down-conversion. We also discuss two additional experimental schemeswhich offermore complete control of the state purity and entropy.
Keywords :
high-speed optical techniques; optical frequency conversion; optical pumping; quantum optics; biphotons; entropy; four-dimensional quantum states; four-dimensional qudits; frequency-nondegenerate downconversion; spontaneous parametric downconversion; state purity; ultrafast pumping; Crystals; Delta modulation; Frequency; Hydrogen; Optical retarders; Physics; Polarization; Quadratic programming; Satellite broadcasting; Tomography; (270.4180) Multiphoton processes; (270.5585) Quantum information and processing;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
