Quantum Mechanics Quantum News

“Filming” a Quantum Measurement

March 9, 2020

“Filming” a Quantum Measurement

In his 1932 work Mathematical Foundations of Quantum Mechanics, John Von Neumann held that an “ideal” measurement of a quantum system would destroy all quantum superpositions in the system. weirdness” of quantum mechanics is that a quantum system, such as an electron, can exist in multiple quantum states at the same time A team of scientists in Sweden, Spain and Germany has now provided some insight, by “filming” a quantum measurement in progress (Phys. The work both sheds light on the nature of quantum measurement, and could offer insights useful in further development of trapped-ion-based quantum computers. That’s because a key type of quantum computer under development involves the measurement of quantum information, via fluorescence detection, from trapped ions —or, more precisely, that the state at any given moment constitutes a superposition of multiple wave functions describing possible solutions. In the interpretation generally accepted by physicists today, Lüders held that superpositions involving so-called degenerate eigenstates (characteristic states) not involved with the measurement could survive it.

Article from Optics & Photonics News.