Phys. Rev. A 69, 042303 (2004) [14 pages]Bell states in a resonant quantum waveguide networkReceived 14 November 2003; published 5 April 2004 We show that a network of ballistic electron waveguides can generate entangled Bell-like states from separable states when it is resonant. The network we study is grouped into individual qudits (d=4) made up of pairs of waveguides. Rotation gates in the network produce coherent superpositions of qudit states. A Coulomb gate entangles the qudits. We construct a unitary matrix which characterizes the network dynamics and allows a more systematic study of that dynamics. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.042303
DOI:
10.1103/PhysRevA.69.042303
PACS:
03.67.Mn, 03.65.Ud, 73.23.Ad
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