photons

Physicists have outlined how a photon carrying about 300 tera-electronvolts — the most energetic gamma ray ever detected — could have travelled to Earth. Such extreme energies are normally expected to be absorbed by background radiation over cosmic distances, so the finding has drawn attention for what it suggests about particle acceleration in space and possible new physics.

Kip Thorne's black hole Gargantua from the film Interstellar is being revisited, with explanations that it was not a mere visual effect but a scientifically grounded rendering where gravity dictates nearly everything on screen. Discussions cover what the shadow is, why the accretion disk appears above and below the hole, the role of the photon ring, and details the filmmakers deliberately left out.

A rigorous re-examination of cosmic gamma-ray observations has found no evidence that Lorentz invariance breaks down at high energies. Researchers applying unified statistical methods confirmed that the speed of light remains constant regardless of photon energy or direction, reinforcing Einstein's relativity and placing tighter limits on quantum-gravity models that predict energy-dependent light speeds.

French photonic quantum computing company Quandela is looking to partner with Korean firms to manufacture its photonic quantum chips. The move would tie Quandela's quantum photonics technology to South Korea's semiconductor manufacturing base, potentially speeding up production of its quantum processors. Details on specific partners, timelines, or investment amounts were not disclosed, leaving the scope of the collaboration uncertain.

Physicists have successfully measured the W state of three quantum-entangled photons, a specific type of multi-particle entanglement where entanglement is shared unevenly among the photons. The achievement, reported by ScienceAlert, demonstrates refined experimental control over complex quantum states, a capability relevant to quantum computing, quantum communication and fundamental tests of quantum mechanics. Science observers are sharing the result as a notable step in entanglement research.

Citizen has introduced the Eco-Drive PHOTON in India, drawing attention for its watchmaking and the physics of its light-charging dial technology. Coverage details the model's Indian pricing and specifications, explaining how the Eco-Drive system converts light into energy to power the watch without a battery. The dial's design and its interaction with light are a focal point of the discussion.

New research using cosmic gamma rays is probing whether the speed of light is truly constant, a cornerstone of Einstein's relativity. By studying high-energy photons that travelled vast cosmic distances, physicists are searching for tiny deviations that could point to quantum gravity effects and challenge the limits of Einstein's theory.

GE HealthCare is showcasing its photon-counting CT technology, a next-generation imaging approach that measures individual X-ray photons for sharper images at potentially lower radiation doses. The company's work in this area places it among the major imaging firms racing to bring the technology into routine clinical use, drawing attention from healthcare industry observers.

GlobalFoundries has received an additional $300 million award under the CHIPS Act from the Trump administration, strengthening US chip manufacturing support. Separately, Nvidia CEO Jensen Huang said silicon photonics is 'essential' to the future of AI, highlighting growing demand for optical interconnect technology in data centers. The moves underline Washington's continued push to onshore semiconductor production while Nvidia frames photonics as key infrastructure for scaling AI systems.

Physics World has published a discussion in which experts assess the future of photonics, weighing the field's main challenges against its opportunities. The piece surveys where light-based technologies are heading and what obstacles researchers and industry must overcome to realise their potential.

Physicists report a breakthrough in controlling light in three dimensions, which they say unlocks quantum states previously considered impossible. The work could influence future research in quantum computing, photonics and advanced materials. Details of the finding and its practical implications remain limited, but the claim of reaching 'impossible' states is drawing attention across the physics community.

LightCounting has published a roundup of highlights from CIOE 2026, the China International Optoelectronic Exposition. The recap covers developments showcased at the event, a key gathering for the optical communications and photonics industry. Industry watchers are looking to the show for signals on optical component and module trends.

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.

Startup Photon, which staged a symbolic funeral for mobile apps, has raised $4.5 million to build software agents it believes will replace traditional apps. The funding signals continued investor appetite for agentic AI, with the company arguing that conversational agents can handle tasks currently done through app interfaces.

Researchers report a technique for controlling electron motion using three-dimensional sculpted light fields, a physics advance described on EurekAlert. By shaping light in three dimensions, scientists aim to direct electrons with greater precision, with potential implications for ultrafast science and future electronic or photonic technologies. Details of the team, institutions and applications were not provided in the available coverage.

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.

Northeastern Global News is reporting on a research study described as 'a study in light and focus,' suggesting new work in optics or photonics from the university's researchers. Few details are available beyond the headline, and the piece is being shared in science-focused coverage without significant public engagement so far. The exact findings and the research team involved remain unspecified in the available information.

A Japanese tech roundup covering late September to early October reports that xAI has released Grok 4.7, that support services are launching for building private-network AI using Google's Gemini Enterprise, and that NTT's IOWN all-photonic network is being used for remote 3D sports viewing. The item aggregates recent artificial intelligence developments, including agentic AI and moves toward general artificial intelligence.

Photon, a startup betting that AI agents will supplant traditional mobile apps, has raised $4.5 million in funding. The company marked the announcement with a symbolic funeral for mobile apps, underscoring its argument that app-based interfaces are on their way out. The funding will support its effort to build agent-based alternatives that handle tasks directly rather than through individual apps.

Photon has raised USD4.5 million in a seed funding round, as reported by startup and venture news outlet FinSMEs. The round signals continued investor interest in early-stage startups, though details on the company's sector, backers, and planned use of funds were not provided in the initial report.

nLIGHT, Inc., a laser technology company traded on NASDAQ under the ticker LASR, is seeing increased attention on its stock price, news coverage and trading history. Investors are checking quotes and recent developments around the company, though no specific announcement or price movement is confirmed. The interest appears tied to general market monitoring of the laser and photonics sector.

Researchers have offered an explanation for how a photon with an energy of 300 teraelectronvolts, one of the highest-energy photons ever detected, could have travelled to Earth. Such extreme gamma rays are expected to be absorbed or degraded over interstellar distances, so the finding has drawn attention from physicists discussing the mechanisms that could allow it to survive the journey and what it reveals about cosmic accelerators.

Researchers report a new method for generating photons that are nearly indistinguishable from one another, a key requirement for quantum communication technologies such as quantum key distribution and quantum networks. The advance is being reported in physics and photonics circles as a step toward more reliable quantum information systems.

Photon Marine has received funding for its 'ChargeBarge' project, a floating storage and charging solution for electric boats. The company develops electric propulsion systems for workboats, and the barge concept would provide charging infrastructure on the water where shore power is limited. Details on the funding amount and backers were not disclosed in initial reports.

Xanadu Quantum Technologies, the Toronto-based photonic quantum computing company now trading under the ticker XNDU, is drawing attention as investors follow its share price, quotes and company news on financial platforms. The stock is being watched as part of broader interest in publicly listed quantum computing firms, where early-stage commercial timelines make valuations volatile and each company announcement or sector development can move prices noticeably.