Quantum mechanics is a fundamental branch of physics that describes the behavior of matter and energy at the smallest scales—typically at the level of atoms, electrons, photons, and subatomic ...

OUITE a number of books have been written on quantum mechanics with applications to problems of physics. Now, however, we have something new, a book on quantum mechanics with applications to chemistry ...

In 2020 one of us, Toni, asked another of us, Marco, to come to his office at the Institute of Photonic Sciences, a large research center in Castelldefels near Barcelona. “There is a problem that I ...

A quantum number describes the energies of electrons in atoms. Each quantum number specifies the value of a conserved quantity in the dynamics of the quantum system. Since any quantum system can have ...

From cybersecurity to banking, supply chain to medicines, and military to weather forecasting, quantum computing has the potential to have a profound influence on a wide range of industries. Making ...

Imaginary numbers might seem like unicorns and goblins — interesting but irrelevant to reality. But for describing matter at its roots, imaginary numbers turn out to be essential. They seem to be ...

Do you feel nervous when you make a credit-card transaction using your mobile phone? Your worries could soon be a thing of the past, thanks to a low-cost device that could bring powerful cryptography ...