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Science News for May 18, 2025


More is less: a new state-multiplexed approach to quantum entanglement network

Researchers propose a polychromatic-pumped quantum light source to overcome exponential demand for spectrum in fully connected multi-user networks. The new approach enables significant reduction in wavelength channels required, with a 67% decrease projected for larger user counts.

Weight-loss surgery in jeopardy

Bariatric surgery, a critical tool for combating obesity, is under threat in Australia due to skyrocketing indemnity insurance premiums. The study found that surgeons are being penalized by rising premiums, forcing some to reconsider their future in the field.

SourceFlinders University·JournalANZ Journal of Surgery·TypeSurvey·DateMay 18, 2025

A multidimensional diagnostic approach for COPD

A new COPD diagnostic approach integrates respiratory symptoms, quality of life, spirometry, and CT imaging to accurately classify individuals with the disease. This framework reveals increased risks for mortality, exacerbations, and lung function decline among those classified as having COPD.

SourceJAMA Network·JournalJAMA·DateMay 18, 2025

Researchers reveal structure and activation mechanism of prostaglandin E2 receptor EP1

The study reveals the structure and activation mechanism of the human EP1 receptor, a key player in pain, cardiovascular disease, and certain cancers. The researchers identified unique residues that form a distinct binding motif for prostaglandin E2 and uncovered subtype-specific activation mechanisms.

SourceChinese Academy of Sciences Headquarters·JournalProceedings of the National Academy of Sciences·DateMay 18, 2025

Two out of five patients with heart failure do not see a cardiologist even once a year and these patients are more likely to die

Two out of five heart failure patients do not see a cardiologist annually, significantly increasing mortality risk. Patients who receive regular cardiology care are 24% less likely to die in the following year, with optimal visits ranging from once to four times per year depending on recent hospitalization and diuretic use.

SourceEuropean Society of Cardiology·JournalEuropean Heart Journal·TypeObservational study·DateMay 18, 2025

Quantum CZ gates on a single gradient metasurface

Researchers propose a novel solution using a single gradient metasurface to realize quantum controlled-Z (CZ) gates, enabling high-density integration and multifunctionality. This design allows for both polarization-encoded and path-encoded CZ gates, with potential applications in quantum computing, communication, and sensing.