Researchers have developed and demonstrated a GaP-on-diamond hybrid nanophotonic platform enabling controlled interaction between photons and silicon-vacancy (SiV) centers in diamond. Using stamp transfer, the team fabricated more than 600 nanophotonic cavities on a diamond substrate with a yield of 99.5%, achieving cooperativity above 1 and a spin relaxation time exceeding 0.4 milliseconds, enabling single-shot readout of SiV electron spins. Next steps include connecting multiple devices on the same chip and demonstrating entanglement.
Why we recommend it: A transfer process that avoids etching the diamond balances device yield with spin-photon coupling, offering a concrete example of how quantum network interfaces could move toward scalable manufacturing.
Researchers used laser pulses to align tiny electrical regions, or domains, in a quantum material, demonstrating light's ability to tune a material's electrical order. The work was reported by Phys.org on October 15, 2026.
Researchers integrated gallium phosphide (GaP) nanophotonic cavities onto a diamond substrate using a stamp transfer process, enhancing quantum optical interaction with diamond color centers. The devices are first fabricated by electron-beam lithography in a GaP thin film on a carrier, screened by spectroscopic testing, and then transferred. Experiments achieved cooperativity above 1. The platform can serve as a light-matter interface in quantum networks.
Why we recommend it: The source details the heterogeneous integration process and the screening-and-transfer workflow, offering useful reference for fabrication routes for diamond color center quantum photonic devices.
Researchers have built a fully connected four-user quantum network, distributing time-frequency entangled photon pairs over six links using a broadband integrated lithium niobate photon source. Using the polarization of the same photon as a trusted quantum input, they can verify and quantify entanglement without trusting the measurement devices.
The Quantum Data Centre Alliance (QDA) held its second forum at Battersea Power Station in London, stating that quantum computing is moving closer to deployment as scalability and integration challenges are gradually resolved.
A paper in Nano Letters reports a quantum chip capable of storing multiple photons simultaneously, offering a new path toward scalable quantum memory for fragile quantum information systems.
Researchers used superconducting circuits to fuse smaller photonic graph states into larger entangled states, offering a new approach to the large-scale entanglement resources needed for quantum computing.
A paper in Science reports that researchers entangled a levitated glass nanosphere with an optical field in an optical trap, achieving the effect at room temperature and providing a new platform for macroscopic quantum mechanics research.
Why we recommend it: The original article reports entanglement of a macroscopic object with light at room temperature, relevant to optomechanics and quantum sensing
Infleqtion, in collaboration with Honeywell Aerospace and the University of California, Santa Barbara, has developed an integrated optical cavity that could help shrink quantum sensors to handheld size.
In an interview, NVision CTO Ilai Schwartz explains that the company is betting on chemically designed photonic interconnects, arguing that this will make modular quantum computing hardware scalable, with a single chip potentially holding up to 100,000 molecular qubits.
Researchers propose a new method for generating nearly indistinguishable photons from quantum dot biexciton cascades, suitable for quantum communication.
Why we recommend it: The original paper transmitted a high-dimensional cluster state over actually deployed fiber, offering useful lessons for quantum network engineering
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Shanghai Institute of Optics and Fine Mechanics (SIOM) · Research UpdatesOptics industryPicksAI score6363
Researcher Tian Ye and Academician Li Ruxin at the Shanghai Institute of Optics and Fine Mechanics (SIOM), together with Researcher Pan Yiming at ShanghaiTech University and colleagues, have proposed a new mechanism that uses the quadratic phase accumulated during the propagation of free-electron quantum wave packets to simultaneously achieve selectable high-harmonic bunching and synthesis of nonclassical quantum light, linking quantum state control, high-harmonic radiation and quantum light synthesis.
Why we recommend it: The original paper proposes a unified framework for free-electron lasers and quantum light sources, relevant to novel light source research
Shuo Sun and colleagues used fishbone photonic crystal cavities to combine diamond nanobeams with titanium dioxide integrated optical circuits, achieving heterogeneous integration.
Why we recommend it: The original paper presents a new structure coupling diamond color centers to integrated optical circuits, relevant to quantum photonic chips
Nature Photonics published a News & Views commentary discussing readout of electron-on-helium qubits and progress toward strong coupling between photons and single electrons on helium surfaces.
Researchers at TU Wien propose that letting photons change shape as they propagate could enable perfect quantum information transfer between quantum network nodes.
Photonic quantum computing company Turing Quantum announced on January 27 that it had completed a Series B financing round worth several hundred million yuan, with investors including Sichuan Industrial Revitalization Group, Toukong Donghai, Fosun Capital and SenseTime. The Hangzhou Institute of Optics and Fine Mechanics previously participated in its angel round. The funds will be invested in the development of practical quantum computers, breakthroughs in core technologies and the building of R&D talent. The original report said Turing Quantum has achieved mass-producible, scalable and programmable integrated photonic quantum chip manufacturing based on a thin-film lithium niobate material platform.