BHEPS-1000 Bright Polarization-Entangled Photon Source Narrowband Telecom

Signal/Idler Degeneracy Wavelenght 1550 or 810 nm; Photon Pairs Bandwidth FWHM ~80 or ~3 nm; Noise Suppression 75 dB; Max. Output Power of Pump Laser 12 mW, variable. The correlated photon pair sources generate photon pairs entangled in time or energy through spontaneous parametric down conversion (SPDC). Once the photon pairs are created, the pump photons are filtered out from the remaining pairs using an integrated set of optical filters. Equipped with a stabilized pump laser and internal variable optical attenuator for pump power control, OZ Optics' correlated pair sources ensure stable operation. The SPDC medium is thermally stabilized to maintain optimal phase matching conditions, thereby maximizing photon conversion efficiency. The photon pairs are separated using either a wavelength splitter (WDM) or polarizing beam splitter (PBS), depending on the spectral bandwidth of the unit ordered. Key features: Rugged, alignment free and all-in-fiber design High heralding efficiency Turn-key, highly-stable and room-temperature operation Built-in pump laser and noise-suppression filters Selectable wavelength, counts rate and bandwidth Customizable Applications: Fundamental quantum information science, quantum key distribution, quantum computing, quantum metrology

Signal/Idler Degeneracy Wavelength 1550 ±0.7² nm; Photon Pairs Bandwith FWHM 3 nm @ -3 dB Spectral Brightness; Noise Suppression >75 dB; Fidelity >98% OZ Optics' advanced entangled photon sources harness the high optical confinement within a periodically poled nonlinear waveguide (PPNW) to achieve exceptional efficiency and produce plentiful photon pairs. Utilizing spontaneous parametric down-conversion (SPDC) within a periodically poled lithium niobate (PPLN) type-2 waveguide, situated within a fiber-based Sagnac loop, photons are generated. The thermal stabilization of the PPNW ensures maintenance of the ideal phase matching condition. Following the creation of photon pairs, pump photons and associated fluorescence noise are efficiently filtered out from the remaining pairs using a built-in set of optical filters. This remarkable stability is attained through the self-compensation effect of an all-in-fiber Sagnac interferometer, complemented by a single-frequency external cavity laser operating at 775 nm with an ultra-narrow linewidth. Consequently, bright, high-performance, and low-noise entangled photon sources operating at room temperature are realized. The resulting polarization-entangled photon pairs are generated within a narrow spectral bandwidth of just a few nanometers in the C Band, with a center wavelength of 1550 nm. Key features: Highest counts/coincidence rate available in the market High Heralding efficiency and excellent fidelity Turn-key, highly stable, room temperature operation Rugged, alignment free, proprietary design Built-in noise-suppression filters Built-in stable pump laser with variable attenuator Customizable Applications: Quantum key distribution, quantum computing and information processing, quantum LIDAR, subsystem integrable for quantum communication