Researchers at Fraunhofer IOF have developed a single-material cladding light stripper with self-adapting behavior, overcoming nonlinear effects and heat buildup in thulium fiber lasers. The design enables over 20 W of stripped signal light at 2 µm and up to 675 W at 793 nm, setting a new record for single-material CLS designs.
SourceSPIE--International Society for Optics and Photonics·JournalAdvanced Photonics Nexus·TypeExperimental study·DateDec 3, 2025
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Researchers have made significant progress in laser cooling and trapping polar molecules, enabling applications in quantum information and precision measurements. The long-term goal is to achieve Bose–Einstein condensation in laser-cooled molecules through advancements in phase space density.
SourceKeAi Communications Co., Ltd.·JournalQuantum Review Letters·DateJul 29, 2025
Sandia Labs is testing laser-based photonic cooling for computer chips, which could significantly lower power consumption and increase efficiency. The technology aims to regulate chip temperatures without using water or air-based systems.
UC Santa Barbara researchers develop photonic integrated 3D-MOT, a miniaturized version of equipment used to trap and cool atoms. This innovation enables new applications in sensing, precision timekeeping, and quantum computing, and paves the way for accessible quantum research projects.
SourceUniversity of California - Santa Barbara·JournalOptica Quantum·DateMar 4, 2025
A newly developed ion crystal clock has demonstrated record accuracy, reaching an uncertainty close to the 18th decimal place. This achievement marks a significant step towards redefining the second in the International System of Units (SI), as optical clocks are now 100 times more accurate than current caesium clocks.
SourcePhysikalisch-Technische Bundesanstalt (PTB)·JournalPhysical Review Letters·TypeExperimental study·DateJan 17, 2025
Researchers developed a novel 3D-printed hierarchical micro/nano-structured surface to improve spray cooling's high heat transfer coefficient and critical heat flux. The new surface coordinates liquid film boiling and capillary evaporation, resulting in record-breaking heat transfer performance.
SourceScience China Press·JournalScience Bulletin·DateDec 16, 2024
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Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.
Optical cooling has been elusive due to challenges in reaching high emission efficiency, but researchers shed light on the phenomenon using a stable 'dots-in-crystal' material. The study demonstrated true optical cooling with a theoretical cooling limit of approximately 10 K from room temperature.
SourceChiba University·JournalNano Letters·TypeExperimental study·DateNov 26, 2024
Positronium, an exotic atom composed of an electron and a positron, has been cooled to just 1 degree above absolute zero. This achievement could aid in studying the properties of antimatter and potentially unlock secrets of the universe.
SourceUniversity of Tokyo·JournalNature·TypeExperimental study·DateSep 11, 2024
The researchers have successfully demonstrated quantum entanglement between electronic and motional states in their ultrafast quantum simulator, generating a new quantum simulation method including repulsive force between particles. This achievement is expected to improve the fidelity of two-qubit gate operations and realize socially u...
SourceNational Institutes of Natural Sciences·JournalPhysical Review Letters·TypeExperimental study·DateSep 2, 2024
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MIT physicists arrange dysprosium atoms as close as 50 nanometers apart, a limit previously set by the wavelength of light. This allows for enhanced magnetic forces, thermalization, and synchronized oscillations, opening new possibilities for studying quantum phenomena.
SourceMassachusetts Institute of Technology·JournalScience·DateMay 2, 2024
Scientists create a small drum that stores data sent with light in its sonic vibrations, allowing for secure transmission over long distances. This innovation has the potential to revolutionize quantum computing and enable an internet with quantum speed and security.
SourceUniversity of Copenhagen - Faculty of Science·JournalPhysical Review Letters·DateApr 15, 2024
Researchers successfully cooled positronium atoms to record-low temperatures of 170 K, significantly reducing their transverse velocity component. This achievement has far-reaching implications for precision spectroscopy and the study of quantum electrodynamics.
SourcePolitecnico di Milano·JournalPhysical Review Letters·TypeObservational study·DateFeb 27, 2024
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Scientists from the Stiller Research Group have successfully cooled the temperature of a sound wave in an optical fiber to 74K (-194C), reducing phonon number by 75%. This achievement brings researchers closer to bridging the gap between classical and quantum mechanics.
SourceMax Planck Institute for the Science of Light·JournalPhysical Review Letters·TypeExperimental study·DateJan 18, 2024
Scientists create a low-cost, room-temperature single-photon light source by doping optical fibers with ytterbium ions, paving the way for affordable quantum technologies. The innovation overcomes cooling system limitations, enabling applications in true random number generation, quantum communication and high-resolution image analysis.
SourceTokyo University of Science·JournalPhysical Review Applied·TypeExperimental study·DateNov 2, 2023
UVA professor Patrick Hopkins is developing a 'freeze ray' technology to cool electronics in spacecraft and high-altitude jets, which can't be cooled by nature due to the vacuum of space. The technology uses heat-generating plasma to create localized cooling, and has been granted $750,000 by the Air Force.
SourceUniversity of Virginia School of Engineering and Applied Science·JournalACS Nano·TypeExperimental study·DateJul 31, 2023
Scientists have developed a new technique to cool membranes with lasers, achieving temperatures close to absolute zero without measurement. The method uses a coherent feedback loop, where laser light acts as both sensor and damper, to dampen thermal vibrations and reach extremely low temperatures.
SourceUniversity of Basel·JournalPhysical Review X·DateJun 26, 2023
A team from TU Wien has developed a method to cool several particles simultaneously by adapting the spatial structure of a laser beam to particle motion. The technique uses far-field wavefront shaping to optimize cooling and can be achieved without knowing the exact location or movement of the particles.
SourceVienna University of Technology·JournalPhysical Review Letters·DateFeb 28, 2023
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Researchers use lasers to cool atoms to absolute zero, revealing new phenomena in an unexplored realm of quantum magnetism. The creation of SU(N) matter opens a gateway to understanding the behavior of materials and potentially leading to novel properties.
SourceRice University·JournalNature Physics·TypeExperimental study·DateSep 1, 2022
Physicists at Rice University have created a quantum simulator that reveals the behavior of electrons in one-dimensional wires, shedding light on spin-charge separation. The study's findings have implications for quantum computing and electronics with atom-scale wires.
SourceRice University·JournalScience·TypeExperimental study·DateJun 16, 2022
Researchers have successfully cooled a pair of highly charged ions to an unprecedentedly low temperature of 200 µK using quantum algorithms. This achievement brings the team closer to building an optical atomic clock with highly charged ions, which could potentially be more accurate than existing clocks.
SourcePhysikalisch-Technische Bundesanstalt (PTB)·JournalPhysical Review X·TypeExperimental study·DateDec 13, 2021
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Researchers at MIT have invented a new technique to cool atoms into condensates using laser cooling, conserving 70% of the original cloud. The method enables faster investigations into magnetism and superconductivity.
SourceMassachusetts Institute of Technology·JournalScience·DateNov 23, 2017
Researchers from the University of Southampton have demonstrated a new laser cooling technique that could cool molecules using matter wave interference. This technique has the potential to cool atoms and molecules beyond conventional methods, opening up new possibilities for quantum devices and technologies.
SourceUniversity of Southampton·JournalPhysical Review Letters·DateAug 18, 2015
Yale physicists have successfully cooled strontium monofluoride to near absolute zero using magneto-optical trapping, enabling new research in quantum chemistry and particle physics. The discovery opens doors for experimentation in precision measurement, quantum simulation, ultracold chemistry, and tests of the standard model.
Scientists from Nanyang Technological University (NTU) have developed a revolutionary laser cooling system that can cool semiconductors to extremely low temperatures, potentially replacing harmful refrigerants in air-conditioning and refrigerators. This technology has far-reaching implications for various industries, including healthca...
SourceNanyang Technological University·JournalNature·DateJan 30, 2013
Scientists at the University of Copenhagen have developed a new method for cooling semiconductor membranes using lasers. By heating the material, they were able to cool its fluctuations to minus 269 degrees C.
SourceUniversity of Copenhagen·JournalNature Physics·DateJan 22, 2012
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Research highlights include colorful connections in the brain, disease-detecting lights for osteoporosis monitoring, and direct laser cooling of molecules. New techniques like Raman spectroscopy and two-photon microscopy are also being showcased.
A team of Yale physicists has successfully cooled molecules using lasers, bringing scientists closer to individual molecule-based qubits. This achievement promises new applications in quantum computing, chemistry, and particle physics, offering a promising breakthrough in the field.
Researchers at the University of Bonn have demonstrated a method for cooling gas using laser bombardment, which works under pressure. The technique allows for rapid refrigeration capacities, enabling the creation of new states of matter and potentially leading to the development of mini fridges.
A research team from NIST and University of Maryland successfully cooled erbium atoms to within two millionths of absolute zero using a novel trapping technique. This breakthrough enables the capture and manipulation of individual erbium atoms with unique optical properties.
SourceNational Institute of Standards and Technology (NIST)·JournalPhysical Review Letters·DateApr 2, 2008
Researchers have developed techniques to control most atoms using atomic coilguns and lasers, enabling the determination of neutrino mass and potential applications in atomic physics. The breakthroughs use a combination of supersonic beam technology and single-photon cooling methods.
SourceUniversity of Texas at Austin·JournalPhysical Review Letters·DateMar 6, 2008
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A study found that skin cooling during laser treatment increased the risk of hyperpigmentation in dark-skinned individuals. The cooled sides were three times more likely to become hyperpigmented than the uncooled sides, according to a report published in Archives of Dermatology.
SourceJAMA Network·JournalArchives of Dermatology·DateSep 17, 2007
Physicists at NIST have demonstrated radio-frequency cooling of a large object by reducing its thermal motion with radio waves. They cooled a silicon cantilever to -228 C (-379 F) using an RF circuit, which may be more practical than optical techniques in some cases.
SourceNational Institute of Standards and Technology (NIST)·JournalPhysical Review Letters·DateSep 14, 2007
Researchers have created a device that approaches the quantum mechanical limit at the largest length-scale, demonstrating back action and cooling an object by watching it. The results could have applications in quantum computing and cooling engineering.
Researchers have achieved net optical cooling of erbium-doped materials using laser radiation, overcoming technical difficulties associated with this phenomenon. This breakthrough enables the development of new devices such as high-power optical fibre lasers and medical diagnostic techniques.
SourceElhuyar Fundazioa·JournalPhysical Review Letters·DateJul 26, 2006
Researchers at NIST have successfully trapped erbium atoms using laser cooling, enabling the creation of a Bose-Einstein condensate and producing single photons with potential uses in telecommunications. The technique holds promise for developing novel devices and applications in quantum computing and materials science.
SourceNational Institute of Standards and Technology (NIST)·DateApr 28, 2006
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Researchers at the Max Planck Institute have cooled single rubidium atoms in an optical resonator for up to 17 seconds, a record-breaking achievement. This milestone demonstrates the potential of atomic manipulation for quantum computing applications.
SourceMax-Planck-Gesellschaft·JournalNature Physics·DateOct 11, 2005
Researchers at Sandia and Columbia University have successfully cooled molecules to millikelvin temperatures, a significant milestone in the quest for molecular ultra-coldness. The new technique uses atomic beam intersection, which generates cold molecules despite being inefficient, with one molecule in a million cooling collisions.
SourceDOE/Sandia National Laboratories·JournalScience·DateDec 12, 2003