Physical-resource demands for scalable quantum computation

Carlton M. Caves; Ivan Deutsch; Robin Blume-Kohout

doi:10.1117/12.504760

16 May 2003 Physical-resource demands for scalable quantum computation

Carlton M. Caves, Ivan Deutsch, Robin Blume-Kohout

Proceedings Volume 5111, Fluctuations and Noise in Photonics and Quantum Optics; (2003) https://doi.org/10.1117/12.504760
Event: SPIE's First International Symposium on Fluctuations and Noise, 2003, Santa Fe, New Mexico, United States

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.

Citation Download Citation

Carlton M. Caves, Ivan Deutsch, and Robin Blume-Kohout "Physical-resource demands for scalable quantum computation", Proc. SPIE 5111, Fluctuations and Noise in Photonics and Quantum Optics, (16 May 2003); https://doi.org/10.1117/12.504760

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