I³MS - DiVincenzo Seminar
Prof. Dr. David DiVincenzo - Prospects for Solid State Quantum Computers
Institute for Theoretical Nanoelectronics and Institute for Advanced Simulation, Forschungszentrum Jülich GmbH
Progress on solid state qubits, particularly Josephson junction devices, now brings us to the possibility of planning a scalable, multi-qubit architecture. While we can envision how the quantum part of device can be designed to effectively implement fault tolerant error correction, I will argue that, if implemented with present-day techniques, the classical controller of this quantum computer will be massively bigger than its quantum part. I will take as a case study the history of the microwave circulator to illustrate this problem, and to point out the engineering (and physics) innovations that might give fundamental improvements on the classical side.