New technique using Raman scattering can dramatically improve laser linewidth for better quantum computing
phys.org/news/2025-07-technique-raman-laser-linewidth-quantum.html
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Key FactsResearchers demonstrate photonic chips for smaller quantum systems
Mar 30, 2026 · Reading time: ~45 sec.
Summary created with AI assistance · Source: phys.org
Summary created with AI assistance · Source: phys.org
- Researchers showed for the first time that small photonic chips can replace large precision lasers and control trapped ions for qubit and clock operations.
- The demonstrated components could reduce portions of quantum hardware from room-sized systems to the size of a deck of cards.
- The system already achieves high-fidelity qubit state preparation and measurement, but has not yet matched state-of-the-art clock performance.
- The next goal is integrating the ion trap, laser, optical cavity, and other photonics onto one chip.
"You can't have football fields full of lasers and optics. It's just not going to work. Integration is the only viable path."— Robert Niffenegger, assistant professor of electrical and computer engineering at the University of Massachusetts Amherst, quoted in the Phys.org article about chip-scale stabilized Brillouin lasers and integrated quantum photonics.
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