The problem there is that heat is noise, and the balmy 300 Kelvin environment next to my workstation is a very noisy place indeed. So far, qubits seem to demons

The problem there is that heat is noise, and the balmy 300 Kelvin environment next to my workstation is a very noisy place indeed. So far, qubits seem to demonstrate the ability to actually be in a superposition of states only when we get them extremely cold so as to remove as much noise as possible from the system. This doesn't seem to be changing anytime soon, at least in the realm of superconducting qubits! It's not actually a problem at this point, because cryogenics technology is really advanced, to some extent commoditized - if you want a fridge, you can buy one, though at D-Wave we've pushed the state of the art on these systems far past what you'd get off the shelf, to the extent where we've had production systems spend years cold with only routine maintenance. For the foreseeable future, it makes way more sense to interact with a quantum computer remotely, the same way you interact with your Hadoop cluster or your GPU farm; you don't want to work right next to it, it's noisy, and unfortunately unlike a Cray it doesn't provide built-in seating. I should know, there are a large number of these machines a stone's throw from my desk...