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Category: computing

Silicon quantum processor detects single-qubit errors while preserving entanglement

Quantum computers are alternative computing devices that process information, leveraging quantum mechanical effects, such as entanglement between different particles. Entanglement establishes a link between particles that allows them to share states in such a way that measuring one particle instantly affects the others, irrespective of the distance between them.

Quantum computers could, in principle, outperform classical computers in some optimization and computational tasks. However, they are also known to be highly sensitive to environmental disturbances (i.e., noise), which can cause quantum errors and adversely affect computations.

Researchers at the International Quantum Academy, Southern University of Science and Technology, and Hefei National Laboratory have developed a new approach to detect these errors in a silicon-based quantum processor. This error detection strategy, presented in a paper published in Nature Electronics, was found to successfully detect quantum errors in silicon qubits, while also preserving entanglement after their detection.

Optical switch protocol verifies entangled quantum states in real time without destroying them

The fragility and laws of quantum physics generally make the characterization of quantum systems time‑consuming. Furthermore, when a quantum system is measured, it is destroyed in the process. A breakthrough by researchers at the University of Vienna demonstrates a novel method for quantum state certification that efficiently verifies entangled quantum states in real time without destroying all available states—a decisive step forward in the development of robust quantum computers and quantum networks.

The work was carried out in Philip Walther’s laboratories at the Faculty of Physics and the Vienna Center for Quantum Science and Technology (VCQ) and published in the journal Science Advances.

Entangled quantum states are the fundamental building blocks of many new quantum technologies, from ultra‑secure communication to powerful quantum computing. However, before these delicate states can be used, they must be rigorously verified to ensure their quality and integrity.

Man arrested for demanding reward after accidental police data leak

Dutch authorities arrested a 40-year-old man after he downloaded confidential documents that had been mistakenly shared by the police and refused to delete them unless he received “something in return.”

Police detained the suspect at his Prinses Beatrixstraat residence in Ridderkerk on Thursday evening for computer hacking after the failed “extortion” attempt, searching his home and seizing data storage devices to recover the files.

The incident began when the man contacted police on February 12 about images he had that may be relevant to an ongoing investigation. An officer responded to his inquiry but, instead of sending a link to upload the images, mistakenly shared a download link to confidential police documents.

Amaterasu Particle That Broke Physics Has Finally Been Explained

A mysterious, extremely energetic particle, known as the Amaterasu particle, was detected coming from a distant region of space, and scientists have proposed explanations for its origin, potentially tracing it back to a starburst galaxy like Messier 82 ##

## Questions to inspire discussion.

Understanding Ultra-High Energy Cosmic Rays.

🔬 Q: What makes the Amaterasu particle exceptionally powerful? A: The Amaterasu particle detected in Utah in 2021 carries energy 40 million times higher than anything produced on Earth, equivalent to a baseball traveling at 100 km/h compressed into a single subatomic particle, making it one of the most energetic particles ever detected.

Solving the Origin Mystery.

🎯 Q: Where did scientists determine the Amaterasu particle actually originated? A: A 2026 study by Max Planck Institute scientists using approximate Bayesian computation and 3D magnetic field simulations traced the particle’s origin to a starburst galaxy like Messier 82, located 12 million light-years away, rather than the initially suspected local void with only six known galaxies.

Continue reading “Amaterasu Particle That Broke Physics Has Finally Been Explained” | >

Twisted 2D magnet creates skyrmions for ultra dense data storage

As data keeps exploding worldwide, scientists are racing to pack more information into smaller and smaller spaces — and a team at the University of Stuttgart may have just unlocked a powerful new trick. By slightly twisting ultra-thin layers of a magnetic material called chromium iodide, researchers created an entirely new magnetic state that hosts tiny, stable structures known as skyrmions — some of the smallest and toughest information carriers ever observed.

A microfluidic chip for one-step detection of PFAS and other pollutants

Environmental pollutant analysis typically requires complex sample pretreatment steps such as filtration, separation, and preconcentration. When solid materials such as sand, soil, or food residues are present in water samples, analytical accuracy often decreases, and filtration can unintentionally remove trace-level target pollutants along with the solids.

To address this challenge, a joint research team led by Dr. Ju Hyeon Kim at the Korea Research Institute of Chemical Technology (KRICT), in collaboration with Professor Jae Bem You’s group at Chungnam National University, has developed a microfluidic-based analytical device that enables direct extraction and analysis of pollutants from solid-containing samples without any pretreatment. The study was published in ACS Sensors

Water, food, and environmental samples encountered in daily life may contain trace amounts of hazardous contaminants that are invisible to the naked eye.

Hologram processing method boosts 3D image depth of focus fivefold

Researchers from the University of Tartu Institute of Physics have developed a novel method for enhancing the quality of three-dimensional images by increasing the depth of focus in holograms fivefold after recording, using computational imaging techniques. The technology enables improved performance of 3D holographic microscopy under challenging imaging conditions and facilitates the study of complex biological structures.

The research results were published in the Journal of Physics: Photonics in the article “Axial resolution post-processing engineering in Fresnel incoherent correlation holography.”

One of the main limitations of conventional microscopes and 3D imaging systems is that, once an image or hologram has been recorded, its imaging properties cannot be altered. To overcome this limitation, Shivasubramanian Gopinath, a Junior Research Fellow at the University of Tartu Institute of Physics, and his colleagues have developed a new method that enables to capture a set of holograms with different focal distances at the time of acquisition, instead of a single image. These can then be computationally combined to produce a synthetic hologram that offers a much greater depth of focus than conventional approaches, and allows for post-processing of the recorded image.

Quantum research in two ways: From proving someone’s location to simulating financial markets

Quantum physics may sound abstract, but Ph.D. candidates Kirsten Kanneworff and David Dechant show that quantum research can also be very concrete. Together, they are investigating how quantum technology can change the world. While Kanneworff worked in the lab to study how quantum optics can be used to prove someone’s location, Dechant focused on quantum computing for dynamic systems, such as the financial world. The two researchers are defending their doctoral theses this week.

Imagine that you receive an email from someone posing as your bank, asking you to enter your personal details on a website. How can you verify the sender’s identity?

Kanneworff investigated a smart way to check whether someone is really in a certain place: quantum position verification. “The idea for this project came about during my master’s degree,” she says. “I found it an interesting subject. The combination of optics and quantum communication really appealed to me, especially since it has a clear application.”

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