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quantum optics
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- 1Quantum optics proposed as defense against GPS spoofingโ๐ค Quantum optics vs GPS spoofing: classical position verification is easy to fool. Quantum states could authenticate a r
Researchers are exploring quantum position verification as a way to authenticate a receiver's location, addressing the vulnerability of classical GPS to spoofing attacks. According to a Physics Today report, quantum states could make location verification far harder to fake, but real-world deployment depends on building systems that are fast and low-loss โ the main practical bottleneck currently holding the technology back.
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Shares of XNDU rose following news of a deal with ASML aimed at tackling optical loss in photonic quantum chips. Optical loss is a key technical barrier to scaling photonic quantum computing, so a partnership with lithography leader ASML to address it drew attention from investors and boosted the stock.
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Quantum technology firm Infleqtion, Honeywell and the University of California, Santa Barbara have jointly developed a chip-scale optical cavity, a component used to stabilise lasers in quantum and photonic systems. Shrinking such cavities onto a chip could make quantum devices smaller, cheaper and easier to deploy at scale, and the collaboration draws on Infleqtion's quantum expertise, Honeywell's hardware capabilities and UCSB's photonics research.
- 4Optalysys Claims Photonic Chips Can Move Data, Not Just Connect ItโOptalysys Says Photonic Chips Can Move Data, Not Just Connect It
Optalysys, a UK computing company, says its photonic chip technology can actively move and process data rather than merely transferring it between components. The claim, reported by Quantum Zeitgeist, positions optical computing as a potential alternative to electronic interconnects in data-heavy workloads. It could matter for AI and high-performance computing, where moving data is often the bottleneck.
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Researchers have made exciton wavefunctions directly visible in an experimental advance reported by Physics World. Excitons โ bound pairs of electrons and holes that govern optical properties of semiconductors โ have until now been characterised indirectly. Being able to image their wavefunctions could improve understanding of light-matter interactions and support development of optoelectronic and quantum materials.
- 6CCNY physicists convert microwaves to light with 2D magnetsโผA new bridge for quantum networks: CCNY physicists convert microwaves to light using 2D magnets
Physicists at the City College of New York report converting microwave signals into light using atomically thin 2D magnetic materials, a step toward connecting quantum devices. The advance could let distant quantum processors or sensors communicate through optical fiber, which transmits photons far more efficiently than microwaves. Researchers describe the work as a building block for future quantum networks.
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A new signal processing method has been reported to improve the efficiency of quantum light detection. The development could matter for quantum optics research and technologies that rely on detecting single photons, such as quantum computing and secure communications. Beyond the claim of improved efficiency, no detailed results, measurements, or independent assessments are available yet.
- 8Penn State Team Develops Electro-Optic Thin Films for Quantum and AIโExceptional Electro-Optic Thin Films for Quantum and AI Applications โ UNLOC
Researchers with the UNLOC project at Pennsylvania State University report developing exceptional electro-optic thin films, materials that convert electrical signals into optical ones with high efficiency. Such films are considered key building blocks for faster optical modulators, with potential uses in quantum information systems and AI hardware where data transfer speed and energy efficiency are critical.
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Researchers affiliated with the American Physical Society report a new technique using quantum light to probe how solvents influence molecular behaviour. The method is said to reveal solvent effects on molecules with greater sensitivity than conventional optical approaches. Details of the study, its authors and specific findings are limited, but the work is being highlighted within the physics community as an advance in quantum-enhanced spectroscopy.
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Researchers report a quantum entanglement experiment linking glass dust with light, suggesting that ordinary granular material can be entangled with optical photons. The work points to new ways of studying quantum effects in larger, everyday materials, though detailed findings and the team behind the result have not been widely reported yet.
- 11Programmable fusion advances scalable photonic graph statesโผDeterministic and programmable fusion for the scalable generation of photonic graph states
Researchers publishing in Nature report a deterministic and programmable fusion technique for generating photonic graph states at scale. Photonic graph states are entangled light states central to photonic quantum computing, networking and repeaters. Making fusion deterministic rather than probabilistic, while keeping it programmable, is presented as a step toward scalable quantum photonics. The finding matters because scaling entangled photon sources has been a key bottleneck for optical quantum technologies.