Year-end Sale % OFF 
Abstract
A thin-film periodically poled lithium niobate waveguide was designed and fabricated which generates entangled photon pairs at telecommunications wavelengths with high coincidences-to-accidentals counts ratio CAR>67000, two-photon interference visibility V>99%, and heralded single-photon autocorrelation g_{H}^{(2)}(0)<0.025. Nondestructive insitu diagnostics were used to determine the poling quality in 3D. Megahertz rates of photon pairs were generated by less than a milliwatt of pump power, simplifying the pump requirements and dissipation compared to traditional spontaneous parametric down-conversion lithium niobate devices.
Highlights
Spontaneous parametric down-conversion (SPDC) was used to generate the entangled photons used in first demonstrations of quantum teleportation, entanglementbased cryptography, tests of Bell’s inequality, one-way optical quantum computing, and other notable experiments [1,2,3,4,5,6,7,8]
Nanoscale waveguides, which reduce the modal cross-section area by 10 times compared to traditional lithium niobate (LN) waveguides, could result in lowering the power requirements by a factor of 100 times and simultaneously improve the quality of the generated photon pairs, by reducing the likelihood of thermal effects or noise contributions from high levels of pump power
AEstimated from the peak-to-side-lobe (Æ0.5 ns) ratio of coincidence counts. bPeak value of the raw coincidence counts divided by the measurement time, and further divided by the detection efficiency and detector gating duty cycle. cFrom the stated pump power and on-chip pair generation rate. dFrom the stated pair generation rate. e,fEstimated from Figs. 5(a) and 5(b) in Ref. [20]. gEstimated from the product of the stated values of the loss-corrected normalized brightness, bandwidth, waveguide length, and the losscorrected pump power. hEstimated from the measured singles rate. iFrom the fitted line in Fig. 4(b) at the estimated pair coincidence rate (PCR)
Summary
Main et al [16] Frank et al [17] Luo et al [18] Rao et al [19] Rao et al [19] Chen et al [20] Chen et al [20] Elkus et al [21] This work This work This work This work This work.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
