Abstract: The theory of quasi-phase-matched second-harmonic generation is presented in both the space domain and the wave vector mismatch domain. Departures from ideal quasi-phase matching in ...

Abstract: The development of large quantum computers will have dire consequences for cryptography. Most of the symmetric and asymmetric cryptographic algorithms are vulnerable to quantum algorithms.

A Chinese state-owned company has unveiled what it described as the world’s first commercial cryptography system that cannot be hacked even by quantum computers. China Telecom Quantum Group ...

A photograph etched on a tiny, metal pendant has been reunited with its owner after spending more than seven years underground. Dave Helm discovered the pendant, which has a picture of an elderly ...

A quantum theory of gravity would clear the path to answering some of the biggest questions in physics. Credit: SciTechDaily.com A bold new quantum theory of gravity may finally bridge the ...

This idea, then, became the central component to quantum theory, sprouting the field of science known as quantum mechanics. The double-slit experiment supported the idea, showing bright and dark bands ...

Whether you're shopping for a special occasion or something to wear every day, we've rounded up the best necklaces for women. Our editors and experts handpick every product we feature. We may earn ...

A way to greatly enhance the efficiency of a method for correcting errors in quantum computers has been realized by theoretical physicists at RIKEN. This advance could help to develop larger ...

D-Wave Quantum and IONQ reported smaller-than-expected Q1 losses, too QBTS was last seen up 39.9% at $9.64, gapping above former pressure at the $8 level and trading at its highest level since ...

Quantum computing stocks surged in premarket trading Thursday, driven by robust quarterly results from D-Wave Quantum (NYSE:QBTS). D-Wave shares jumped more than 20% after the company reported ...

Quantum teleportation, once a theoretical concept, is now a tangible reality, reshaping the landscape of communication. This article delves into recent breakthroughs, their significance, and the ...