Japanese team develops method to detect quantum W states

2026년 05월 14일

AI에 의해 보고됨

Researchers from Kyoto University and Hiroshima University have created a new technique to identify W states, a complex form of quantum entanglement. The advance could support progress in quantum computing and communication.

A team led by Shigeki Takeuchi demonstrated the method using three photons in a stable optical circuit. The device performs a quantum Fourier transformation based on the cyclic shift symmetry of W states. It distinguishes different three-photon W states in a single measurement without needing extensive adjustments during operation.

관련 기사

University of Chicago team simplifies creation of entangled quantum states

Researchers at the University of Chicago have developed a straightforward method to produce complex entangled quantum states using basic adjustments in optical cavity systems. The approach relies on existing laboratory tools and could advance quantum sensing applications. Their findings appear in a recent issue of Physical Review X.

Oxford physicists create new Schrödinger’s cat quantum state

2026년 06월 15일 AI에 의해 보고됨

Researchers at the University of Oxford have generated a new family of quantum superpositions using nonclassical components in a trapped ion system. The work demonstrates programmable control over exotic motional states and could advance quantum technologies.

Science

Hidden quantum states discovered in cobalt metal

Science

Physicists discover transdimensional quantum state in carbon material

Science

Scientists observe wave-like behavior in positronium for first time

Finnish team detects record-low energy with quantum sensor

Researchers in Finland have measured an energy signal smaller than one zeptojoule using a new calorimeter. The achievement opens pathways for improved quantum computing and searches for dark matter.

Researchers create exotic quantum states with timed magnetic fields

2026년 05월 05일 AI에 의해 보고됨

Scientists at California Polytechnic State University have discovered new forms of quantum matter by varying magnetic fields over time. The breakthrough, detailed in Physical Review B, shows that time-dependent control can produce stable quantum states without static equivalents. This could advance quantum computing by making systems more resistant to errors.

Quantum systems exhibit memory depending on perspective, scientists find

An international team of researchers has discovered that quantum systems can appear memoryless from one viewpoint while retaining memory from another. The finding, based on Schrödinger and Heisenberg pictures, reveals hidden memory effects in quantum dynamics. This could impact the design of quantum technologies.

Scientists observe atoms spinning backward in quantum experiment

2026년 05월 24일 AI에 의해 보고됨

An international team of researchers has directly observed angular momentum transfer in a crystal for the first time, revealing an unexpected reversal in atomic rotation direction. The discovery, achieved with powerful terahertz laser pulses on bismuth selenide, highlights a quantum effect tied to crystal symmetry. Findings were published in Nature Physics.

2026년 06월 11일 14시 34분