Qubit Spinner Keychain

thingiverse

This is a straightforward representation of a Qubit -- a Quantum Bit. Yes, it resembles a rotating bit within the letter "Q", but it actually depicts a qubit inside a quantum computer, which can be valued at 0, 1, or an uncertain value potentially entangled with other qubits. Since this is just one qubit, there isn't any entanglement and the uncertain value is indicated by either rotating the bit to any position between the 0 and 1 sides or, much more engaging, by the central portion spinning freely. When printed without supports, the center will spin quite freely when you blow on it. The top of the Qubit features a cavity that can accept a 25-27mm diameter keychain loop, or cord/fishing line could be threaded through it to treat it as a pendant. The Qubit itself measures 36x36x5.5mm in size. This design was intended to be a 3D-printed give-away for our group's [research exhibit at SC18](http://aggregate.org/EXHIBITS/SC18/), and several hundred were given away there. Our group, [Aggregate.Org](http://aggregate.org/), is based in the [Electrical and Computer Engineering Department](http://www.engr.uky.edu/research-faculty/departments/electrical-computer-engineering/) of the [University of Kentucky](http://www.uky.edu/). The raised lettering on the model gives URLs; the "plain" versions do not. The number at the end of the file specifies the rotation pivot tolerance; 1000 works well for quick, coarse prints and 500 is better suited for extrusion heights of 0.2mm or less.