Quantum hierarchic models for information processing

Details Quantum hierarchic models for information processing Quantum hierarchic models for information processing

2011-05-07

arxiv.org/abs/1105.1464v3

International Journal of Quantum Information, vol. 10, 2012, p.1250026-1-14

Physics

Quantum Physics

14 pages, LaTeX, 1 eps figure

Scientific paper

10.1142/S0219749912500268

Both classical and quantum computations operate with the registers of bits. At nanometer scale the quantum fluctuations at the position of a given bit, say, a quantum dot, not only lead to the decoherence of quantum state of this bit, but also affect the quantum states of the neighboring bits, and therefore affect the state of the whole register. That is why the requirement of reliable separate access to each bit poses the limit on miniaturization, i.e, constrains the memory capacity and the speed of computation. In the present paper we suggest an algorithmic way to tackle the problem of constructing reliable and compact registers of quantum bits. We suggest to access the states of quantum register hierarchically, descending from the state of the whole register to the states of its parts. Our method is similar to quantum wavelet transform, and can be applied to information compression, quantum memory, quantum computations.

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