Frequency Converter
Quantum Frequency Conversion is essential for a wide range of applications, especially in quantum optical information processing and sensing. QCI's versatile QFC-XX-YYY module enables the transformation of C-band photons and O-band photons into sum frequency photons of visible wavelength via a periodically poled lithium niobate waveguide. With excellent customizability, durability, low noise, and compact design, QCI's module is ideal for use in both academic research and industrial settings.
Capabilities and applications
Our Low-Noise Lithium Niobate Quantum Frequency Converter efficiently transforms communication-band photons to visible wavelengths, to be detected by cost-effective, highly efficient Si APD’s. With custom-designed wavelength separation to filter out background noises due to second harmonic generation and Raman scattering, our QFC-XX-YYY module ensures high conversion efficiency and low background noise, vital to preserve signal quantum properties for long-distance quantum communication, networking, and sensing.
Quantum computing
Quantum remote sensing
Quantum metrology
Quantum networking
Time synchronization system
Fundamental physics studies
Details
This diagram illustrates the sum frequency generation (SFG) process, a phenomenon in nonlinear optics wherein a signal photon combines with a pump photon to generate a sum frequency photon. This conversion process adheres to the principles of conservation of energy and momentum. Figure 1(b) presents a conceptual diagram wherein a signal photon and a pump photon (connected by red dashed lines) enter the LN2-QFC-XXX module, resulting in the production of a sum frequency (SF) photon at visible wavelength. The module incorporates additional filters to prevent the emission of any undesired second harmonic and Raman scattering photons from either the signal or pump.
Specifications
QFC-CC-YYY series supports the conversion of C-band photons by a C-band pump.
QFC-CC-YYY | QFC-100 |
Input Fiber | PM1550 + mode adaptor / FC/APC |
Output Fiber | FG050LGA/ FC/APC |
Waveguide length | 20 mm |
Signal Wavelength | Telecom C band |
Pump Wavelength | Telecom C band |
Sum Frequency Wavelength | 760 nm ~ 880 nm |
Overall Efficiency | >= 80%/W @ low input |
QFC-CO-YYY series supports the conversion of C-band photons by an O-band pump.
QFC-OC-YYY | QFC-100 |
Input Fiber | PM1550 + mode adaptor / FC/APC |
Output Fiber | FG050LGA/ FC/APC |
Waveguide length | 20 mm |
Signal Wavelength | Telecom O band |
Pump Wavelength | Telecom C band |
Sum Frequency Wavelength | 760 nm ~ 880 nm |
Overall Efficiency | >= 80%/W @ low input |
QFC-OC-YYY series supports the conversion of O-band photons by a C-band pump.
QFC-CO-YYY | QFC-100 |
Input Fiber | PM1550 + mode adaptor / FC/APC |
Output Fiber | FG050LGA/ FC/APC |
Waveguide length | 20 mm |
Signal Wavelength | Telecom C band |
Pump Wavelength | Telecom O band |
Sum Frequency Wavelength | 760 nm ~ 880 nm |
Overall Efficiency | >= 80%/W @ low input |