Invention Reference Number
The disclosed approach for continuous variable quantum key distribution (CVQKD) simplifies the process of transmitting quantum signals through optical fiber. Traditionally, maintaining the correct signal polarization during transmission has been essential, often requiring complicated stabilization and correction methods. Our encoding technique for the Gaussian Modulated Coherent State (GMCS) CVQKD protocol eliminates the need for active polarization control or monitoring both polarization modes. By allowing the transmitter to encode distinct information in each of four quadratures, two in each polarization mode, the method ensures that the receiver can measure a valid GMCS signal that is recoverable using digital signal processing even when polarization shifts occur. This approach streamlines the transmission process by reducing the necessary optical components, minimizes signal loss, and avoids noise typically introduced by polarization correction systems.
Description
This new method improves quantum communication by introducing a polarization agnostic technique for GMCS CVQKD. By resolving challenges related to polarization stabilization, this solution enhances the reliability of quantum signal transmission while making the system more efficient. The outcome is a robust and simplified protocol that opens up new avenues for secure communication in the quantum realm, paving the way for advancements that could transform information security practices.
Benefits
- Infrastructure integration: Leveraging common telecom components facilitates easy integration, minimizing new hardware costs.
- Lower operating costs: Room temperature operation eliminates the need for costly cooling systems.
- Maintenance savings: Fewer components and reduced complexity lead to lower maintenance and operational expenses.
- Scalability efficiency: Seamless coexistence with existing telecom traffic allows for cost-effective expansion without significant capital investment.
Applications and Industries
- Telecommunications: Enhancing secure communication networks by integrating simplified continuous variable quantum key distribution systems
Contact:
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
