Title :
Quantum state tomography using photon number counting to evaluate entanglement generated by spontaneous parametric downconversion
Author :
Yoshizawa, Akio ; Fukuda, Daiji ; Tsuchida, Hidemi
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol. (AIST), Tsukuba, Japan
Abstract :
We analyze polarization-entangled photon pairs using detectors that can or cannot count photons to discuss accuracy of the fidelity estimated by quantum state tomography. The use of four photon-number-resolving detectors presents best accuracy.
Keywords :
optical frequency conversion; optical tomography; photon counting; quantum entanglement; entanglement generation; four photon-number-resolving detectors; photon number counting; polarization-entangled photon pairs; quantum state tomography; spontaneous parametric downconversion; Accuracy; Detectors; Flowcharts; Optimized production technology; Photonics; Quantum entanglement; Tomography;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
