NIST researchers have developed a new approach to frequency comb technology that could revolutionize precise measurements of distance and time. The “time programmable frequency comb” allows for more efficient use of light pulses, potentially enabling measurements at the quantum limit of precision.
Key points:
– Frequency combs are like rulers for light, measuring distance with nanometer accuracy
– Traditional methods waste most light, limiting measurement speed and precision
– New approach controls timing of pulses, eliminating dead time and improving photon detection
– Could enable quantum-limited measurements, faster detection, and smaller systems
– Applications include satellite formation flying, GPS, and atmospheric sensing
The research, published in Nature, demonstrates a 37-decibel reduction in required received power, meaning only 0.02% of photons are needed compared to traditional methods. The team is exploring how this technology could benefit other frequency comb applications.
Keywords: photons, combined, quantum, measurement, frequency
