Quantum information science

A schematic representation of quantum interference of the topological motion of electrons along the symmetry-allowed sample hinges. Credit: Shafayat Hossain, postdoctoral research associate in the Zahid Hasan group at Princeton UniversityNew research expands opportunities for advancements in quantum physics and spintronics.In a novel experiment, physicists have observed long-range quantum coherence effects due to Aharonov-Bohm interference in a topological insulator-based device. This finding opens up a new realm of…

The biggest challenge in the development of the quantum computer consists of the magnetic and electrical noise that disturbs the quantum effect, and therefore the processor QPU (Quantum Processing Unit) is cooled down to the lowest possible temperature just above the absolute zero point of -273 degrees. This happens in the cryostat, which can be seen in the picture. The processor is located at the bottom of the cryostat. Credit: Ola J. Joensen, NBIScientists around the world work hard to rinse quantum systems for noise,…

Researchers have achieved quantum coherence at room temperature by embedding a light-absorbing chromophore within a metal-organic framework. This breakthrough, facilitating the maintenance of a quantum system’s state without external interference, marks a significant advancement for quantum computing and sensing technologies.Researchers observe the quantum coherence of a quintet state with four electron spins in molecular systems for the first time at room temperature.In a study published in Science Advances, a group of…

If you’ve ever wondered what quantum computers actually do, you’re not alone. The truth is, no one knows what modern problems this technology can solve. Google launched a multi-year, global competition on Monday to find real-world use cases for quantum computing, and the finalists will split $5 million.No Google AI Search, I Don’t Need to Learn About the “Benefits of Slavery” “While there are many reasons to be optimistic about the potential of quantum computing, we’re still somewhat in the dark about the full scope of…

Stanford University’s research team has made a significant breakthrough in quantum technology by improving niobium-based qubits to match leading alternatives. This advancement highlights niobium’s potential to operate at higher temperatures and wider ranges, opening new possibilities for quantum computing. Credit: SciTechDaily.comExpanding possibilities for superconducting qubits.For years, niobium was considered an underperformer when it came to superconducting qubits. Now scientists supported by Q-NEXT have found a way…

Researchers at Paderborn University have pioneered a method using photon detectors for homodyne detection to characterize optical quantum states accurately. This technique is vital for advancing quantum information processing and quantum computing. Credit: SciTechDaily.comScientists achieve breakthrough in quantum optics with photon detector-based method, paving the way for improved quantum computing.Scientists at Paderborn University have used a new method to determine the characteristics of optical, i.e. light-based,…

Theoretical physicists have found a way to potentially enhance quantum computer chips’ memory capabilities by ensuring information remains organized, similar to perpetually swirling coffee creamer, defying traditional physics’ expectations.Add a dash of creamer to your morning coffee, and clouds of white liquid will swirl around your cup. But give it a few seconds, and those swirls will disappear, leaving you with an ordinary mug of brown liquid.Something similar happens in quantum computer chips—devices that tap into the…

Conceptual art of the operating device, consisting of a nanopillar-loaded drum sandwiched by two periodically segmented mirrors, allowing the laser light to strongly interact with the drum quantum mechanically at room temperature. Credit: EPFL & Second Bay StudiosResearchers at EPFL have achieved a milestone in quantum mechanics by controlling quantum phenomena at room temperature, overcoming the longstanding barrier of needing extreme cold. This opens up new possibilities for quantum technology applications and the…

A recent study has introduced a potent combination of diamond and lithium niobate for quantum technologies, achieving a remarkable 92% light transmission efficiency. This advancement promises to enhance the development of quantum computing and communication networks.Diamond and lithium niobate are combined to serve as a core component for future quantum technologiesDiamond and lithium niobate are often touted as high-performance quantum materials. Now, in a result supported by the Q-NEXT center, scientists have combined…

Researchers have developed a groundbreaking method to identify errors in quantum computers, greatly improving error correction efficiency. This advancement employs real-time error monitoring in quantum computations, marking a significant shift in quantum computing research. Credit: SciTechDaily.comWith a quick pulse of light, researchers can now find and erase errors in real time.Researchers have developed a method that can reveal the location of errors in quantum computers, making them up to ten times easier to correct.…