Macroscopic entanglement in Josephson nanocircuits

[摘要] We propose a scheme to generate and detect entanglement between charge states in superconducting nanocircuits. We discuss different procedures to discriminate such entanglement from classical correlations. The case of maximally entangled states of two and three coupled Josephson junctions is discussed as an example.

[关键词] COOPER-PAIR BOX;QUANTUM STATES;HANBURY-BROWN;ELECTRONS;JUNCTIONS;SUPERPOSITION;TRANSPORT;NOISE;DOT