Metal Rings as Quantum Bits

We propose a device that meets the physical and quantum mechanical conditions required for the operation of interacting quantumbits. Metal rings embeddedin a solid state substrate by means of silicon processing technology are considered as the basic computing elements. We investigate different set-ups and concepts that are compatible with the topology of the metallic rings. Accessing the rings for in- and output signals as well as achieving the exchange and quantization of information are two essential requirements for a proper operation of an array of communicating quantum bits. In particular, the superposition of the quantum states characterizing the quantum bit array is primordial in order to run quantumcomputing algorithms. Furthermore, decoherence must be dealt with in a controllable fashion in order to read out the signals before they loose the signature of the quantum information. This work reports on the processing and testing of two device configurations.