Invention Reference Number
This technology provides a homodyne detector and read-out server system capable of delivering real-time quadrature samples to clients on demand. By reliably capturing, buffering, and time-tagging measurement data, the platform supports precise quadrature sampling needed for advanced quantum optical experiments. The system enables clients to request specific sample times, improving the accessibility and scalability of homodyne-based characterization techniques essential for quantum networking and state tomography.
Description
This invention integrates a stabilized homodyne detector with a server-based architecture that continuously acquires and buffers quadrature samples in real time. The system employs a highly stable optical configuration, a high-quality flexible local oscillator, and optimized detection components to ensure consistent quadrature measurement. A high-speed digitization module, paired with a programmable logic system, collects and organizes the data into time-stamped buffers. These buffers are continuously updated and maintained as a rolling storage space, enabling clients to query quadrature samples at specific times through a defined application-specific interface.
The server processes requests using an efficient addressing scheme ensuring timely access without disrupting ongoing acquisition. Configurable modes allow users to retrieve raw samples, integrated measurements, or filtered subsets for calibration or tomography workflows. An additional threshold-crossing counter mode enables a variety of additional measurements and capabilities. Additional synchronization and control mechanisms support multi-detector coordination and provide consistent timing performance across distributed systems. Overall, the platform enables flexible, real-time access to homodyne measurement data without exposing implementation-critical hardware or signal-generation methods.
Benefits
- Real-time access to quadrature measurement data
- Configurable sampling modes for diverse experimental needs
- High stability and low-latency data delivery
- Scalable architecture compatible with multi-node quantum systems
Applications and Industries
- Quantum state tomography
- Photon-subtracted or conditional state measurement
- Quantum networking and communication
- Advanced optical sensing and metrology
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
