npj Quantum Information
The scope of this journal spans across all relevant disciplines, fields, approaches and levels and so considers outstanding work ranging from fundamental research to applications and technologies.
Universal quantum control of an atomic qubit on a surface
Our paper demonstrates universal quantum control of an atomic spin qubit on surface using vector microwave control technique. We were able to control and measure an arbitrary superposition state of the spin, a significant step towards quantum applications of spin architectures at the atomic scale.
Scientists discover light conversion in free space: a manifestation of the quantum van Cittert-Zernike theorem
A new article published in Nature’s npj Quantum Information demonstrates the possibility of producing different kinds of light through propagation in free space.
Entanglement is more than transitive
In science we are often concerned with the relation between a whole and its parts. In quantum physics, this is manifest in the problem of detecting global many-body entanglement from marginal information. But can the knowledge of some parts also be used to reveal new information about another part?