A Nobel That Points Us Toward Our Quantum Future
Scientists like to think that true measures of our understanding are our ability to predict something, and, in experimental physics, control something. This yearâ€™s Nobel Prize in physics has been awarded to Serge Haroche and David Wineland for controlling the quantum world in ways that, not so long ago, were simply unthinkable. In this case, â€œcontrolling the quantum worldâ€ means controlling not just the physical motion of a single atom, but also the internal state of the atom. It is the difference between being able to set off an avalanche, and being able to control where every snowflake goes once the avalanche is in motion.
This level of precise control allows us to use the internal states of atoms, ions and photons as information carriers, similar to bits in todayâ€™s computers. That means that certain calculations that have been impossible until now can become a lot easier. Soon, thanks to quantum computing, weâ€™re going to be inventing things we never thought to invent before.