Abstract
We present equivalence relations which simplify the dynamics of an important class of interacting multi-qubit systems. We show that a wide class of M + 1 qubit systems, with one or M excitations, can be reduced to an equivalent n + 1 qubit system with n ≥ 2, for any M. The equivalent system faithfully reproduces the overall dynamics of the original one including the entanglement properties. In addition to its direct application to qubit-cavity 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.
Original language | English (US) |
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Pages (from-to) | 208-214 |
Number of pages | 7 |
Journal | Europhysics Letters |
Volume | 74 |
Issue number | 2 |
DOIs | |
State | Published - Apr 15 2006 |
ASJC Scopus subject areas
- Physics and Astronomy(all)