"The researchers demonstrated that they were able to suppress quantum tunneling merely by observing the atoms. This so-called “Quantum Zeno effect,” named for a Greek philosopher, derives from a proposal in 1977 by E.C. George Sudarshan and Baidyanath Misra at the University of Texas, Austin, who pointed out that the weird nature of quantum measurements allows, in principle, for a quantum system to be “frozen” by repeated measurements.
"Previous experiments have demonstrated the Zeno effect with the “spins” of subatomic particles. “This is the first observation of the Quantum Zeno effect by real space measurement of atomic motion,” Vengalattore said. “Also, due to the high degree of control we’ve been able to demonstrate in our experiments, we can gradually ‘tune’ the manner in which we observe these atoms. Using this tuning, we’ve also been able to demonstrate an effect called ‘emergent classicality’ in this quantum system.” Quantum effects fade, and atoms begin to behave as expected under classical physics."
Emergent Classicality. Woah. Tuning between quantum 'rules' and classical 'rules', like shifting between stations on a radio dial. (Sorry, Old Man Analogy). Posted before (last year?) about the idea of 'quantum-ness' - that a system can be created that's "partial-quantum" to varying degrees. The first large-scale quantum-computers may well turn out to be partial-quantum, but still be multiple powers faster than 'classical' binary-computers.