A new study provides insights into cleaning up noise in quantum entanglement

Shadow estimation of gate-set properties from random sequences

With quantum computing devices increasing in scale and complexity, there is a growing need for tools that obtain precise diagnostic information about quantum operations. However, current quantum devices are only capable of short unstructured gate sequences followed by native measurements. We accept this limitation and turn it into a new paradigm for characterizing quantum gate-sets. A single experiment—random sequence estimation—solves a wealth …

A new study provides insights into cleaning up noise in quantum entanglement

Quantum entanglement—a connection between particles that produces correlations beyond what is classically possible—will be the backbone of future quantum technologies, including secure communication, cloud quantum computing, and distributed sensing. But entanglement is fragile; noise from the environment degrades entangled states over time, leaving scientists searching for methods to improve the fidelity of noisy entangled states.

Remote particle measurement via quantum entanglement

Quantum physics keeps challenging our intuition. Researchers have shown that joint measurements can be carried out on distant particles, without the need to bring them together. This breakthrough relies on quantum entanglement -- the phenomenon that links particles across distance as if connected by an invisible thread. The discovery opens up exciting prospects for quantum communication and computing, where information becomes accessible only on…

Logarithmic growth of peripheral entanglement concentrated via noisy measurements in a star network of spins

In a star-network of qubits interacting via Heisenberg interaction of XYZ-type, we demonstrate a logarithmic growth of the localizable bipartite perip…

Proposed new route to sharper imaging using quantum interference

Proposed new route to sharper imaging using quantum interference LeahyD Wed, 14/05/2025 - 14:46 University of Portsmouth researchers propose an experimentally simple method that could improve resolution in imaging technologies 14 May 2025 8 minutes Scientists say quantum-enhanced imaging is feasible, thanks to a new approach The innovative method has the potential to break a century-old limit in optical resolution The simplicity of the …

Remote Particle Measurement via Quantum Entanglement

13.05.2025 - A team from the University of Geneva has shown that particles can be measured jointly without bringing them together - a key advance for quantum communication and computing. Quantum physics keeps challenging our intuition.