Digital reconstruction of squeezed light

Researchers from CyberQ have published a new paper in npj Quantum Information titled “Digital reconstruction of squeezed light for quantum information processing”. The study presents a novel method to digitally reconstruct squeezed quantum states, opening new pathways for robust quantum communication.

The study introduces a novel asynchronous detection method for squeezed light that removes the need for complex synchronization systems like active phase locking and clock alignment. Using radio-frequency heterodyne detection and digital signal processing, the researchers successfully reconstruct squeezed states without traditional overhead. They validated the method by distributing squeezed light over 10 km of fiber. This work marks a siginifcant milestone toward high-speed, secure QKD systems.

Read the publication here.