Yes, D-Wave's device is on a chip, but there are others long before that, too. I am not sure what the first solid-state qubit experiment was, but such experiments have been going on since the late 90's. The claim of these experiments is that they demonstrate the first quantum bus on a chip.
Slashdot Mirror
Readers may find the Yale group's press release interesting.
Yes, D-Wave's device is on a chip, but there are others long before that, too. I am not sure what the first solid-state qubit experiment was, but such experiments have been going on since the late 90's. The claim of these experiments is that they demonstrate the first quantum bus on a chip.