Renormalization scheme for a multi-qubit-network

Details Renormalization scheme for a multi-qubit-network Renormalization scheme for a multi-qubit-network

2005-09-02

arxiv.org/abs/quant-ph/0509022v1

Europhysics Letters 74, 208-214 (2006)

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1209/epl/i2006-10005-1

We present a renormalization scheme which simplifies the dynamics of an important class of interacting multi-qubit systems. We show that a wide class of M+1 qubit systems can be reduced to an equivalent n+1 qubit system with n equal to, or greater than, 2, for any M. Our renormalization scheme faithfully reproduces the overall dynamics of the original system including the entanglement properties. In addition to its direct application to atom-cavity and nanostructure systems, the formalism offers insight into a variety of situations ranging from decoherence due to a spin-bath with its own internal entanglement, through to energy transfer processes in organic systems such as biological photosynthetic units.

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