Articles tagged with Quantum Information Science
Researchers found a technique to remotely control a key component of most quantum cryptography systems, exploiting imperfections in photon detectors. Countermeasures have been implemented with ID Quantique, a leading manufacturer, to secure the technology.
Researchers found that amino acid residues form a barrier to help electron transfer by keeping water molecules away from the bridge, reducing the rate of transfer. This discovery provides fundamental insight into biochemical reactions and has potential applications in genetically modified organisms.
A team of physicists at the University of Innsbruck successfully demonstrates a quantum walk in trapped ions, with up to 23 steps. This process differs from classical random walks, allowing quantum particles to spread faster and potentially aiding in understanding natural phenomena like energy transport in plants.
Physicists from the Institute for Quantum Optics and Quantum Information produced a Bose-Einstein condensate of strontium atoms, outperforming competitors in an international race. The breakthrough was achieved using the isotope 84Sr, which has ideal scattering properties for this phenomenon.
Scientists at Caltech develop method to detect entanglement shared among multiple parts of an optical system, using the uncertainty principle. They demonstrate detection of entanglement in a W state with only a small number of measurements.
Dr. Ting Yu's article reviews recent progress in studies focused on early-stage disentanglement (ESD) of quantum systems, a phenomenon that can degrade correlation between qubits due to environmental noise. The research has significant implications for the development of quantum information science and technology.
Researchers at University of Toronto have demonstrated a new technique to squeeze light to the fundamental quantum limit, increasing certainty in measurement. This finding has potential applications for next-generation atomic clocks, novel quantum computing and our understanding of the universe.
A four-minute animated movie created by University of Calgary's Barry Sanders explains the nature of quantum computing, its power and underlying science. The animation uses state-of-the-art techniques to convey quantum concepts in an accurate and exciting way.
Researchers at Ames Laboratory and Microsoft Station Q studied nitrogen-vacancy centers in diamond to understand decoherence, a process destroying quantum coherence. They discovered that environmental interference can be regulated by applying a moderate magnetic field, gaining insight into the decoherence process.
Researchers from NEC, JST and RIKEN have successfully demonstrated the world's first controllably coupled qubits using a new circuit technology. This achievement is vital for the realization of practical quantum computers, which are expected to surpass even today's most modern supercomputers in capabilities.
Singapore's top scientists recognized for their innovative contributions to biomedical sciences and quantum research. A team developed a sequencing technology to characterize the human genome, while others made breakthroughs in micro motors and robotic surgery.
Scientists from LANL, NIST and Albion College generated and transmitted secret quantum keys over 184.6 km of fiber-optic cable, setting a new record distance for quantum key distribution. The team used innovative sensors to detect single photons, improving the security of quantum encryption and paving the way for practical applications.
Peter Zoller, a renowned Austrian physicist, has been awarded the prestigious Dirac Medal 2006 for his groundbreaking research in atomic physics. He is being recognized for his innovative methods to use trapped ions for quantum computing and realizing the Bose-Hubbard model in ultracold gases.
Scientists analyzed the magnetic field of the ALH84001 Martian meteorite using a new microscope, revealing that its interior remained cool enough to support life. The findings suggest that microbial life may have traveled from Mars to Earth via the meteorite, but do not prove it.
University of Michigan physicists have created a database that stores and retrieves data in atomic quantum phase, a new approach to data storage. The study uses cesium atoms and ultrafast lasers to store and retrieve data, confirming theoretical predictions made by L.K. Grover.
Scientists made significant progress towards controlling human stem cells, which showed promise for treating a range of diseases. Adult stem cells also demonstrated the ability to shed their old identities and adopt new ones, opening up possibilities for important therapies.
The article explores the idea that time is an illusion, proposing a timeless universe where all configurations exist simultaneously. This concept is rooted in Einstein's general theory of relativity and quantum mechanics, suggesting an eternal, four-dimensional structure called Platonia.
Boston University scientists are developing a new form of microscopy that utilizes entangled-photon fluorescence microscopy to observe brain synapses. This technology holds promise for unraveling the century-old question of how dendritic spines function, crucial for cognitive processes like learning and memory.
Researchers at Stanford University have invented a quantum electron pump, a device that operates according to the laws of quantum physics. The pump uses slight changes in shape created by electrostatic forces to push electrons through it, allowing for the movement of electrons without relying on voltage differences.
The University at Buffalo is hosting a Symposium on Nanoscale Science and Technology, featuring Nobel Laureate J.C. Polanyi and experts in nanostructures and nanoparticles. Researchers will discuss their work on molecular self-assembly approaches, metallic nanoparticles, and new devices for data storage and optical communication.
Researchers at the Weizmann Institute of Science demonstrate that observing electrons alters their behavior, changing from wave-like to particle-like behavior. The study shows that increasing detection can weaken interference patterns, while reducing detection strengthens them.
Researchers used laser pulses to capture detailed snapshots of electron motion at metal surfaces, revealing fundamental dynamics in real-time. This technique has implications for understanding phenomena such as transistor performance and chemical reactivity.