Meltdown in quantum computers needs not occur: Nuclear experiments show a way out

Details Meltdown in quantum computers needs not occur: Nuclear experiments show a way out Meltdown in quantum computers needs not occur: Nuclear experiments show a way out

2005-02-08

arxiv.org/abs/quant-ph/0502050v1

Physics

Quantum Physics

11 pages, 3 postscript figures (low resolution). Uses scicite.sty which is included

Scientific paper

We show that phase memory can be much longer than energy relaxation in systems with exponentially large dimensions of Hilbert space; this finding is documented by fifty years of nuclear experiments, though the information is somewhat hidden. For quantum computers Hilbert spaces of dimension $2^{100}$ or larger will be typical and therefore this effect may contribute significantly to reduce the problems of scaling of quantum computers to a useful number of qubits.

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