NIST has created a method to use quantum systems with long-range interactions to do the following two things faster (in some cases exponentially faster) than in systems with short-range interactions: (1) accomplish quantum state transfer across the system; (2) prepare a large variety of entangled states with applications to metrology and quantum computing. This method makes use of individual control of all participating quantum bits and takes advantage of long-range interactions in such a way that many interaction pathways coherently and constructively interfere to provide the speed-up.
Alexey V. Gorshkov
Ali Hamed Moosavian
Jeremy T. Young
It speeds up a wide range of quantum computer algorithms as well as speeding up the preparation of a wide range of entangled states, including for entanglement-based magnetometry and thermometry with defects in diamond.