I’m currently in San Francisco for my younger brother’s wedding, but that doesn’t stop me from providing science content to you, dear readers. (Ahem.) Researchers have figured out a way to read and manipulate the quantum spin state of a single electron—a classic example in quantum computing that up until now has existed only in theoretical calculations.

By embedding a phosphorous atom in silicon, the researchers used this contrast to isolate the properties of a single electron orbiting the atom. They massaged the electron spin into a particular state using microwaves to drive the system. Varying the microwave pulses, the researchers could cause the electron spin to flip in a controlled fashion. [Read more….]

Building quantum computations from a single electron spin