PIRSA:13040135

The Quantum von Neumann Architecture and the Future of Quantum Computing with Superconducting Circuits

Mariantoni, M. (2013). The Quantum von Neumann Architecture and the Future of Quantum Computing with Superconducting Circuits. Perimeter Institute. https://pirsa.org/13040135

Mariantoni, Matteo. The Quantum von Neumann Architecture and the Future of Quantum Computing with Superconducting Circuits. Perimeter Institute, Apr. 25, 2013, https://pirsa.org/13040135 

          @misc{ pirsa_PIRSA:13040135,
            doi = {10.48660/13040135},
            url = {https://pirsa.org/13040135},
            author = {Mariantoni, Matteo},
            keywords = {},
            language = {en},
            title = {The Quantum von Neumann Architecture and the Future of Quantum Computing with Superconducting Circuits},
            publisher = {Perimeter Institute},
            year = {2013},
            month = {apr},
            note = {PIRSA:13040135 see, \url{https://pirsa.org}}
          }

Matteo Mariantoni Institute for Quantum Computing (IQC)

DOI 10.48660/13040135
Collection
Talk Type Conference

Abstract

Superconducting quantum circuits have made significant advances over the past decade, allowing more complex and integrated circuits that perform with good fidelity. We have recently implemented a machine comprising seven quantum channels, with three superconducting resonators, two phase qubits, and two zeroing registers. I will explain the design and operation of this machine, first showing how a single microwave photon |1> can be prepared in one resonator and coherently transferred between the three resonators [1]. I will then demonstrate how this machine can be used as the quantum-mechanical analog of the von Neumann computer architecture, which for a classical computer comprises a central processing unit and a memory holding both instructions and data. The quantum version comprises a quantum central processing unit (quCPU) that exchanges data with a quantum random-access memory (quRAM) integrated on one chip, with instructions stored on a classical computer [2]. Finally, I will demonstrate that the quantum von Neumann machine provides one unit cell of a two-dimensional qubit-resonator array that can be used for surface code quantum computing. This will allow the realization of a scalable, fault-tolerant quantum processor with the most forgiving error rates to date [3].
[1] M. Mariantoni et al., Nature Physics 7, 287-293 (2011)
[2] M. Mariantoni et al., Science 334, 61-65 (2011)
[3] A. G. Fowler, M. Mariantoni, J. M. Martinis, and A. N. Cleland, Phys. Rev. A 86, 032324 (2012)