A Quantum Network of Silicon Qubits using Mid-Infrared Graphene Plasmons
Joint Quantum Institute, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA(Dated: July 31, 2014)We consider a quantum network of mid-infrared, graphene plasmons coupled to the hydrogen-likeexcited states of group-V donors in silicon. First, we show how to use plasmon-enhanced light-matter interactions to achieve single-shot spin readout of the donor qubits via optical excitationand electrical detection of the emitted plasmons. We then show how plasmons in high mobilitygraphene nanoribbons can be used to achieve high- delity, two-qubit gates and entanglement ofdistant Si donor qubits. The proposed device is readily compatible with existing technology andfabrication methods.