DARPA's military-grade 'quantum laser' will use entangled photons to outshine conventional laser beams

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DARPA's military-grade 'quantum laser' will use entangled photons to outshine conventional laser beams
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Owen Hughes is a freelance writer and editor specializing in data and digital technologies. Previously a senior editor at ZDNET, Owen has been writing about tech for more than a decade, during which time he has covered everything from AI, cybersecurity and supercomputers to programming languages and public sector IT.

Researchers are developing a new, military-grade"quantum laser" that can cut through fog and operate across long distances.

Conventional lasers work by stimulating electrons in atoms to oscillate in unison. When these electrons move from a high-energy state to a low-energy state, they release a form of light called"coherent light" — light with uniform wavelength and phase. As this light is bounced between mirrors inside the laser device, it is refined into a concentrated laser beam.

By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.The two-color photonic dimer laser works by bonding pairs of photons — fundamental particles that represent the smallest building blocks of electromagnetic radiation — through a process called quantum entanglement.

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