Comparing the linewidths from single-pass SPDC and singly resonant cavity SPDC

Oliver Slattery; Lijun Ma; Paulina Kuo; Xiao Tang

doi:10.1117/12.2187059

3 September 2015 Comparing the linewidths from single-pass SPDC and singly resonant cavity SPDC

Oliver Slattery, Lijun Ma, Paulina Kuo, Xiao Tang

Author Affiliations +

Proceedings Volume 9615, Quantum Communications and Quantum Imaging XIII; 961507 (2015) https://doi.org/10.1117/12.2187059
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

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.

Citation Download Citation

Oliver Slattery, Oliver Slattery, Lijun Ma, Lijun Ma, Paulina Kuo, Paulina Kuo, Xiao Tang, Xiao Tang, } "Comparing the linewidths from single-pass SPDC and singly resonant cavity SPDC", Proc. SPIE 9615, Quantum Communications and Quantum Imaging XIII, 961507 (3 September 2015); doi: 10.1117/12.2187059; https://doi.org/10.1117/12.2187059

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