Correlated Photon-Pair Source
Description
Thorlabs' Correlated Photon-Pair Source uses spontaneous parametric down-conversion (SPDC) to create a pair of energy-time entangled photons at 810 nm. With an integrated 405 nm pump laser, this self-contained source results in >450 kHz photon pairs per second and a high-efficiency heralding ratio of >0.45.
A zero-time delay second-order correlation function [g(2) (τ = 0)] value of <0.1 can be achieved with this source, making it a high-brightness heralded single-photon source ideal for quantum optics applications.
In this SPDC source, a nonlinear crystal [periodically poled potassium titanyl phosphate (PPKTP)] converts one 405 nm pump photon into two 810 nm photons (the signal and idler) in a single event. The resulting signal and idler photons have type-II phase matching, which means they propagate with orthogonal polarizations (extraordinary and ordinary).
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Correlated Photon-Pair Source
Specifications |
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|---|---|
| Operating Wavelength: | 810 nm |
| Wavelength Stability: | -2.5-2.5nm |
| Pump Laser Power: | 10-150mW |
| Max Pairs Per Second: | > 450 kHz |
| Lifetime: | >2500 Hours of Pump Emission |
| Extinction Ratio: | > 17 dB |
Features
- Spontaneous Parametric Down-Conversion (SPDC) Source (Collinear Type-II)
- >0.45 High-Efficiency Heralding Ratio
- >450 kHz Pair Generation Rate
- ±2.5 nm Wavelength Stability for Emitted Photons
- Pump Laser Power Adjustable from 10 mW to 150 mW
- Room Temperature Operation
- Remote Operation of 405 nm Pump Laser (Serial RS232)
Applications
- Heralded g(2) Measurements
- Absorption Spectroscopy
- Quantum Metrology
- Sub-Shot-Noise Imaging
- 2-Photon Interference
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United States
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On FindLight:
since 2020
Frequently Asked Questions
The photons generated by the Correlated Photon-Pair Source have a wavelength of 810 nm.
The source can generate more than 450 kHz photon pairs per second.
The Correlated Photon-Pair Source has a high-efficiency heralding ratio of greater than 0.45.
The Correlated Photon-Pair Source can achieve a g(2) (τ = 0) value of less than 0.1.
The SPDC source uses a periodically poled potassium titanyl phosphate (PPKTP) crystal.