Entangling atoms in photonic crystals

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Authors	KONOPKA M. BŮŽEK Vladimír
Year of publication	2000
Type	Article in Periodical
Magazine / Source	European J. Phys. D
MU Faculty or unit	Faculty of Informatics
Citation
Field	Theoretical physics
Keywords	BAND-GAP; BELLS-INEQUALITY; RYDBERG ATOMS; ENTANGLEMENT; VIOLATION
Description	We propose a method for entangling a system of two-level atoms in photonic crystals. The atoms are assumed to move in void regions of a photonic crystal. The interaction between the atoms is mediated either via a defect mode or via a resonant dipole-dipole interaction. We show that these interactions can produce pure entangled atomic states. We analyze the problem with parameters typical for currently existing photonic crystals and Rydberg atoms and we show that the atoms can emerge from photonic crystals in entangled states. Depending on the linear dimensions of the crystal we estimate that a pair of atoms entangled in a photonic crystal can be separated by tens of centimeters.
Related projects:	Informatics as the third methodology Non-sequential Models of Computing -- Quantum and Concurrent Distributed Models of Computing