Researchers Claim New Record in Quantum Light Detection

Researchers from the University of Bristol have claimed a new record for detecting squeezed light, using a newly developed balanced homodyne detector. The work could pave the way for higher-performance quantum computers and quantum communications. The device is based on two silicon photodiodes working in tandem to measure the properties of squeezed quantum light at high speeds. The device is engineered for ultralow electronic noise to detect the faint features of quantum light. It has a footprint of less than a square millimeter which, according to co-lead author Jonathan Frazer, contributes to its ability to measure at such high speeds. The integrated detector combines a silicon photonic chip with a silicon microelectronics chip,...