Entangled laser beams improve the resolution of gravitational-wave detectors

Quantum noise is a limiting issue in high-precision measurements of gravitational waves. Physicists lead by Prof. Roman Schnabel at the “Quantum Universe” Excellence cluster at the University of Hamburg proved in a test experiment that quantum entanglement of laser light can increase the sensitivity of gravitational-wave observatories. The results of their studies where published in … Read more

Quantum Mechanics survives a gravity test in space

Scientists have challenged one of the great mysteries of physics – by undertaking an experiment in space proposed by The University of Queensland a decade ago. The School of Mathematics and Physics’ Professor Timothy Ralph collaborated on the study, which he said could bring quantum technologies, such as a global quantum internet, closer to being … Read more

Bridge between quantum mechanics and general relativity still possible

Quantum mechanics and the general theory of relativity form the bedrock of the current understanding of physics – yet the two theories don’t seem to work together. Physical phenomena rely on relationship of motion between the observed and the observer. Certain rules hold true across types of observed objects and those observing, but those rules … Read more

20-qubit Schrödinger cat states with superconducting quantum processor

Scientists, mainly from Zhejiang University led by Professor Haohua Wang and Institute of Physics of Chinese Academy of Sciences led by Professors Heng Fan and Dongning Zheng, have successfully created Schrödinger cat states of up to 20 qubits with a superconducting quantum processor. In addition, they show that the generated 18-qubit Greenberger-Horne-Zeilinger (GHZ) state is … Read more

Quantum entanglement in chemical reactions? Now there’s a way to find out

Purdue University researchers have demonstrated a new way to measure the phenomenon of entanglement in chemical reactions – the ability of quantum particles to maintain a special correlation with each other over a large distance. Uncovering exactly how chemical reactions work could bring ways to mimic or recreate them in new technologies, such as for … Read more

Researchers teleport information within a diamond

Researchers from the Yokohama National University have teleported quantum information securely within the confines of a diamond. The study has big implications for quantum information technology – the future of how sensitive information is shared and stored. The researchers published their results on June 28, 2019 in Communications Physics. “Quantum teleportation permits the transfer of quantum information … Read more

Building a bridge to the quantum world

Entanglement is one of the main principles of quantum mechanics. Physicists from Professor Johannes Fink’s research group at the Institute of Science and Technology Austria (IST Austria) have found a way to use a mechanical oscillator to produce entangled radiation. This method, which the authors published in the current edition of Nature, might prove extremely useful … Read more

Only a few questions to prove quantum entanglement: a further step towards reliable quantum computation

A team of physicists from the University of Vienna and the University of Belgrade introduces a novel technique to detect entanglement even in large-scale quantum systems with unprecedented efficiency. This brings scientists one step closer to the implementation of reliable quantum computation. The new results are of direct relevance for future generations of quantum devices … Read more