State Transfer in Highly Connected Networks and a Quantum Babinet Principle

Abstract

The transfer of a quantum state between distant nodes in two-dimensional networks, is considered. The fidelity of state transfer is calculated as a function of the number of interactions in networks that are described by regular graphs. It is shown that perfect state transfer is achieved in a network of size N, whose structure is that of a N/2-cross polytope graph, if N is a multiple of 4. The result is reminiscent of the Babinet principle of classical optics. A quantum Babinet principle is derived, which allows for the identification of complementary graphs leading to the same fidelity of state transfer, in analogy with complementary screens providing identical diffraction patterns.

5 pages, 3 figures; Replaced with published version

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Cited by in corpus (1)

• Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport