Quantum-computer architecture using nonlocal interactions
Abstract
Several authors have described the basic requirements essential to build a scalable quantum computer. Because many physical implementation schemes for quantum computing rely on nearest-neighbor interactions, there is a hidden quantum communication overhead to connect distant nodes of the computer. In this paper, we propose a physical solution to this problem, which, together with the key building blocks, provides a pathway to a scalable quantum architecture using nonlocal interactions. Our solution involves the concept of a quantum bus that acts as a refreshable entanglement resource to connect distant memory nodes, providing an architectural concept for quantum computers analogous to the von Neumann architecture for classical computers.
- Publication:
-
Physical Review A
- Pub Date:
- May 2003
- DOI:
- 10.1103/PhysRevA.67.050302
- arXiv:
- arXiv:quant-ph/0301012
- Bibcode:
- 2003PhRvA..67e0302B
- Keywords:
-
- 03.67.Lx;
- 03.65.Ud;
- 03.67.Mn;
- Quantum computation;
- Entanglement and quantum nonlocality;
- Entanglement production characterization and manipulation;
- Quantum Physics
- E-Print:
- 4 pages, 2 figures, Slight modifications to satisfy referee, 2 new references, modified acknowledgement. This draft to appear in PRA Rapid Communications