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Comparing the Linewidths from Single-Pass SPDC and Singly-Resonant Cavity SPDC

Published

Author(s)

Oliver T. Slattery, Lijun Ma, Paulina S. Kuo, Xiao Tang

Abstract

Spontaneous parametric down-conversion (SPDC) is a common method to generate entangled photon pairs for use in quantum communications. The generated single photon linewidth is a critical issue for photon-atom interactions in quantum memory applications. We compare the linewidths of greatly non-degenerate single photon pairs from SPDC generated in the single-pass case and the singly-resonant cavity case. For a 6 mm periodically poled lithium niobate (PPLN) crystal, the linewidth of the generated signal photons is reduced from 1 THz in the single pass case to tens of MHz in the singly-resonant cavity case, while the brightness within the modal lineiwdth is increased by a factor of the cavity finesse, though the overall SPDC generation rate remains unchanged.
Proceedings Title
Quantum Communications and Quantum Imaging XII
Volume
9615
Conference Dates
July 9-14, 2015
Conference Location
San Diego, CA

Keywords

cavity narrowed SPDC, singly-resonant SPDC cavity

Citation

Slattery, O. , Ma, L. , Kuo, P. and Tang, X. (2015), Comparing the Linewidths from Single-Pass SPDC and Singly-Resonant Cavity SPDC, Quantum Communications and Quantum Imaging XII, San Diego, CA, [online], https://doi.org/10.1117/12.2187059 (Accessed December 1, 2021)
Created September 3, 2015, Updated November 10, 2018