The Holevo bound is a keystone in many applications of quantum information theory. We propose “ maximal Holevo quantity for weak measurements” as the generalization of the maximal Holevo quantity ...

Measurements are crucial in quantum mechanics, for fundamental research as well as for applicative fields like quantum metrology, quantum-enhanced measurements and other quantum technologies. In the ...

Over the past 20 years, a strange idea called a "weak value" has taken root in quantum information science. Many of the things you can do with quantum technologies entail being able to gain ...

A technique known as a “weak measurement”, which allows physicists to measure certain properties of a quantum system without disturbing it, is being called into question by two physicists based in ...

Through a one-of-a-kind experiment at the Department of Energy's Oak Ridge National Laboratory, nuclear physicists have precisely measured the weak interaction between protons and neutrons. The result ...

A new method has been developed allowing for quick and precise measurement of quantum states. At TU Wien, a new method was developed allowing for quick and precise measurement of quantum states.

A new result from the Q-weak experiment at the Department of Energy's Thomas Jefferson National Accelerator Facility provides a precision test of the weak force, one of four fundamental forces in ...

“There is no quantum world,” claimed Niels Bohr, one of the founders of quantum mechanics. This powerful theory, though it underlies so much of modern science and technology, is an abstract ...

Scientists at Jefferson Lab in Virginia have precisely measured an important and innate property of the ubiquitous proton for the first time, according to a new paper. The proton property, called its ...

Chalk up another win for the Standard Model, the remarkably successful theory that describes how all the known fundamental particles interact. Physicists have made the most precise measurement yet of ...

Nuclear spin tomography is an application in (human) medicine known from medical institutions. The patient absorbs and re-emits electromagnetic radiation in all directions in space. They are detected ...

A new result from the Q-weak experiment provides a precision test of the weak force, one of four fundamental forces in nature. The proton's weak charge was found to be QWp=0.0719±0.0045, in excellent ...