High spectral purity silicon ring resonator photon-pair source

Jeffrey A. Steidle; Michael L. Fanto; Christopher C. Tison; Zihao Wang; Stefan F. Preble; Paul M. Alsing

doi:10.1117/12.2177179

21 May 2015 High spectral purity silicon ring resonator photon-pair source

Jeffrey A. Steidle, Michael L. Fanto, Christopher C. Tison, Zihao Wang, Stefan F. Preble, Paul M. Alsing

Proceedings Volume 9500, Quantum Information and Computation XIII; 950015 (2015) https://doi.org/10.1117/12.2177179
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

Here we present the experimental demonstration of a Silicon ring resonator photon-pair source. The crystalline Silicon ring resonator (radius of 18.5μm) was designed to realize low dispersion across multiple resonances, which allows for operation with a high quality factor of Q~50k. In turn, the source exhibits very high brightness of >3x10⁵ photons/s/mW²/GHz since the produced photon pairs have a very narrow bandwidth. Furthermore, the waveguidefiber coupling loss was minimized to <1.5dB using an inverse tapered waveguide (tip width of ~150nm over a 300μm length) that is butt-coupled to a high-NA fiber (Nufern UHNA-7). This ensured minimal loss of photon pairs to the detectors, which enabled very high purity photon pairs with minimal noise, as exhibited by a very high Coincidental-Accidental Ratio of >1900. The low coupling loss (3dB fiber-fiber) also allowed for operation with very low off-chip pump power of <200μW. In addition, the zero dispersion of the ring resonator resulted in the production of a photon-pair comb across multiple resonances symmetric about the pump resonance (every ~5nm spanning >20nm), which could be used in future wavelength division multiplexed quantum networks.

Citation Download Citation

Jeffrey A. Steidle, Michael L. Fanto, Christopher C. Tison, Zihao Wang, Stefan F. Preble, and Paul M. Alsing "High spectral purity silicon ring resonator photon-pair source", Proc. SPIE 9500, Quantum Information and Computation XIII, 950015 (21 May 2015); https://doi.org/10.1117/12.2177179

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available