Dispersion-Independent High-Visibility Quantum Interference in Ultrafast Parametric Down-Conversion

Mete Atatüre; Alexander V. Sergienko; Bahaa E. A. Saleh; Malvin C. Teich

doi:10.1103/PhysRevLett.84.618

Dispersion-Independent High-Visibility Quantum Interference in Ultrafast Parametric Down-Conversion

Mete Atatüre, Alexander V. Sergienko, Bahaa E. A. Saleh, and Malvin C. Teich

Phys. Rev. Lett. 84, 618 – Published 24 January 2000

Abstract

We demonstrate the effective removal of intrinsic distinguishability between entangled-photon pairs in femtosecond spontaneous parametric down-conversion. High-visibility quantum interference is recovered (an increase to 96% from 17%) while preserving the high photon-flux density associated with the use of long nonlinear crystals. This new technique is expected to serve as a basic component in the preparation of multiphoton entangled states.

Received 8 April 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.618

Authors & Affiliations

Mete Atatüre¹, Alexander V. Sergienko², Bahaa E. A. Saleh², and Malvin C. Teich^1,2

¹Quantum Imaging Laboratory, Department of Physics, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215
²Quantum Imaging Laboratory, Department of Electrical and Computer Engineering, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215