Harvard physicists have achieved a breakthrough in quantum sensing by making spin squeezing more accessible, paving the way for unprecedented precision in technology and science.
Unlocking Quantum Sensing Breakthroughs
Measurement is the foundation of scientific discovery. Quantum sensing has enabled measurements previously unimaginable, such as atomic vibrations, photon properties, and gravitational wave fluctuations.
The Power of Spin Squeezing
Spin squeezing, a quantum entanglement technique, enhances measurement sensitivity by limiting particle fluctuations. However, achieving spin squeezing has been challenging.
Harvard’s Breakthrough
Researchers have brought spin squeezing closer to practical use. “Quantum mechanics can enhance our ability to measure small signals,” said Norman Yao, physics professor. “We’ve shown that quantum-enhanced metrology is possible in a broader class of systems than previously thought.”
Enhancing Measurement Precision
Spin squeezing reshapes sensitivity by squeezing uncertainty, making certain measurements more precise. This concept has been used in gravitational wave detectors.
New Strategies for Quantum Enhancements
The Harvard team built upon a 1993 paper, outlining a new strategy for generating spin-squeezed entanglement. They discovered that all-to-all interactions are not necessary, but rather, connected spins can dynamically generate spin squeezing.
Future Directions in Quantum Sensing
The researchers are optimistic that their work will inspire new ways to create portable sensors for biomedical imaging, atomic clocks, and more.
Reference:
[Nature Physics paper title] by Bingtian Ye et al.
