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What’s going on inside quantum computers? New method simplifies process tomography

Quantum computers work by applying quantum operations, such as quantum gates, to delicate quantum states. Ideally, quantum computers can solve complex equations at staggeringly fast speeds that vastly outpace regular computers. In real hardware, the operations of quantum computers often deviate from the ideal behavior because of device imperfections and unwanted noise from the environment. To build reliable quantum machines, researchers need a way to accurately determine what a quantum device is actually doing.

Quantum process tomography (QPT) is a standard method for this. However, traditional QPT becomes very costly as the system grows, because the number of required measurements and calculations increases rapidly with the number of qubits.

To address this challenge, a research team from Tohoku University, the Nara Institute of Science and Technology (NAIST), and the University of Information Technology (Vietnam National University, Ho Chi Minh City) has introduced a new framework called compilation-based quantum process tomography (CQPT). The work is published in Advanced Quantum Technologies.

NA62 Collaboration refines measurement of rare particle decay

The NA62 Collaboration has dramatically reduced the uncertainty in its measurement of an extremely rare particle decay, in results just presented at the 2026 La Thuile conference.

The study of rare decays gives physicists the chance to probe the Standard Model of particle physics. Researchers can determine what is known as the branching ratio of a decay, which describes how many particles decay through a particular process as a fraction of the total number of decays that occur.

The branching ratio of the decay that the NA62 Collaboration has studied—the decay of a positively charged kaon into a positively charged pion and neutrino–antineutrino pair (written K+→π+νν)—can be predicted theoretically with a very high degree of precision. Thanks to this “theoretical cleanliness,” this particular kaon decay is extremely sensitive to new physics beyond the Standard Model but, with a predicted branching ratio of less than one in 10 billion, it is extremely rare and very challenging to observe.

How “Empty Space” Is Supercharging Atomically Thin Semiconductors

A single layer of atoms may seem too thin to meaningfully interact with light, yet materials like tungsten disulfide are reshaping what is possible in nanophotonics. Researchers have now found a way to dramatically strengthen these interactions. Atomically thin semiconductors such as tungsten dis

Europol-Led Operation Takes Down Tycoon 2FA Phishing-as-a-Service Linked to 64,000 Attacks

The panel serves as a hub for configuring, tracking, and refining campaigns. It features pre‑built templates, attachment files for common lure formats, domain and hosting configuration, redirect logic, and victim tracking. Operators can also configure how the malicious content is delivered through attachments, as well as keep tabs on valid and invalid sign-in attempts.

The captured information, such as credentials, multi-factor authentication (MFA) codes, and session cookies, can be downloaded directly within the panel or forwarded to Telegram for near‑real‑time monitoring.

“It enabled thousands of cybercriminals to covertly access email and cloud-based service accounts,” Europol said. “At scale, the platform generated tens of millions of phishing emails each month and facilitated unauthorized access to nearly 100,000 organizations globally, including schools, hospitals, and public institutions.”

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