July 29, 2026
École polytechnique and Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
Tingwen Guo, Jules Sueiro, Gian Marcello Andolina, Artem Levchuk, Stefano Ponzoni, Romain Grasset, Donald Monthe, Ian Aupiais, Dmitri Daineka, Javier Briatico, Thales VAG de Oliveira, Alexey Ponomaryov, Atiqa Arshad, Arjun Karimbana-Kandy, Gulloo Lal Prajapati, Igor Ilyakov, Jan-Christoph Deinert, Sebastian F. Maehrlein, Luca Perfetti, Marco Schirò, Yannis Laplace
Published in Nature (DOI: 10.1038/s41586-026-10825-9
https://www.hzdr.de/db/Cms?pOid=78295&pNid=0&pLang=en
“An international team of researchers from École polytechnique, Collège de France, and Helmholtz-Zentrum Dresden-Rossendorf (HZDR) has achieved a world first: the experimental realization of an all-optical photonic time crystal (PTC), a material whose optical properties can be strongly and periodically modulated in time at ultrafast scales. Published in Nature (DOI: 10.1038/s41586-026-10825-9), this breakthrough leverages HZDR’s TELBE superradiant terahertz source to drive the system into a new regime of light-matter interaction in the terahertz range. This discovery paves the way for ultrafast optical computing, new telecommunication systems and eventually new types of terahertz lasers.“
Related review:
Scientists built the first all-optical photonic time crystal, and it could change how light is controlled before computers can use it
Sep 10, 2026
“Scientists have recently developed the first photonic time crystal fully controlled by light. Unlike common materials, its optical behavior changes in a repeating pattern over time. This device works at terahertz frequencies and reduces energy losses by more than half. Until today, this type of technology had only existed in theory or relied on electronic components.”
“This material is not a solid object that may travel through time. An ordinary photonic crystal has a pattern that repeats across space. This type of structure can block, guide, or amplify specific wavelengths. Engineers already applied this idea in devices that are designed to control the movement of photons.”
“How does a photonic time crystal work? Its properties change when light is passing through it. Its reflectivity and resonant frequency change, following a repeating pattern that is measured in picoseconds. One picosecond is one trillionth of a second. So, at terahertz frequencies, these modifications occur almost as quickly as the oscillation cycle of light.”
CCCRdg Notes:
All biologic systems are designed to be quantumly coherent. The error correction to our material sciences parameters limiting this understanding are currently underway. Achieving quantum state processing, biological or otherwise, requires attunement to our very Nature’s Light Science foundations. Precision metrology in Speed, Position, and Timing is absolutely critical for stabilizing the crystal transmitter and maximizing quantum state computing power.