Physical-resource demands for scalable quantum computation
Quantum Physics
2009-11-10 v1
Abstract
The primary resource for quantum computation is Hilbert-space dimension. Whereas Hilbert space itself is an abstract construction, the number of dimensions available to a system is a physical quantity that requires physical resources. Avoiding a demand for an exponential amount of these resources places a fundamental constraint on the systems that are suitable for scalable quantum computation. To be scalable, the number of degrees of freedom in the computer must grow nearly linearly with the number of qubits in an equivalent qubit-based quantum computer.
Cite
@article{arxiv.quant-ph/0304083,
title = {Physical-resource demands for scalable quantum computation},
author = {Carlton M. Caves and Ivan H. Deutsch and Robin Blume-Kohout},
journal= {arXiv preprint arXiv:quant-ph/0304083},
year = {2009}
}
Comments
This paper will be published in the proceedings of the SPIE Conference on Fluctuations and Noise in Photonics and Quantum Optics, Santa Fe, New Mexico, June 1--4, 2003