Abstract: Disclosed herein are quantum dot devices, as well as related computing devices and methods. For example, in some embodiments, a quantum dot device may include: a quantum well stack; a first gate above the quantum well stack, wherein the first gate includes a first gate metal and a first gate dielectric; and a second gate above the quantum well stack, wherein the second gate includes a second gate metal and a second gate dielectric, and the first gate is at least partially between a portion of the second gate and the quantum well stack.

Abstract: Disclosed herein is an improved joy stick control including a control rod interrelated with four switches so as to enable the control of movements in eight different directions. In a further aspect, the present invention includes a fire button located below the switches associated with the control rod and above indentations formed in the handle for the fingers. Each of the switches associated with the control rod includes a stationary upper contact and a movable lower contact with the lower contacts of the switches being operatively connected to the control rod.