NuCrypt EPS Entangled Photon Source

Featurette

• Fiber-coupled Signal and Idler photons on the DWDM ITU grid
• Can generate alignment signals to compensate for fiber polarization transformations
• Computer-controlled two-photon generation rate
• Electrical optical clock output signals available

Applications

• Quantum Communications over Fiber
• Quantum Cryptography
• Quantum Imaging (Ghost Imaging)
• Quantum Metrology
• Quantum Networking

Descriptions

The Entangled Photon Source (EPS) is a highly convenient and user-friendly source that provides fiber-coupled polarization entangled photons in the 1550 nm band. This cutting-edge technology, known as the EPS-1000-W, not only generates polarization entangled signal-idler pairs but also produces a sequence of polarized alignment signals. These alignment signals play a crucial role in facilitating the alignment of subsequent measurement equipment, ensuring accurate and precise results. The software integrated into the EPS allows users to choose between generating entangled photons or alignment photons, providing flexibility and adaptability to suit specific experimental requirements.

One of the remarkable features of the EPS is its ability to enable the alignment of measurement bases for polarization analyzers, even in cases where the polarization transfer functions of the output fibers are unknown. This is made possible through the utilization of alignment signals, which effectively compensate for any uncertainties in the system. Moreover, the EPS operates at a frequency-lockable and tunable repetition rate, allowing multiple EPS units to be synchronized for quantum interference experiments, thus expanding the possibilities for groundbreaking research and discoveries.

In terms of photon generation, each signal/idler photon is produced over a 16 nm bandwidth. To enhance the efficiency and versatility of the EPS, ITU-grid filters are included, enabling the capture of N photon pairs on 2⋅N fibers. While the standard configuration supports N=3, higher values are available to cater to more demanding experimental setups. Additionally, the filtering system can be bypassed, granting customers the freedom to utilize their own filters, further customizing their experimental setup according to their specific needs and preferences.

For those seeking even more tailored options, the EPS offers various customization possibilities, such as time-bin entangled versions and tunable pump pulse-width/wavelength. This ensures that researchers and scientists can fine-tune the EPS to meet their unique requirements and achieve optimal performance. To explore these customization options and discuss specific needs, interested parties are encouraged to inquire further.