Quantum Breathers in Coupled Josephson Junctions
Ricardo A. Pinto and Sergej Flach
Max-Planck Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, 01187 Dresden, Germany; e-mail: pinto@mpipks-dresden.mpg.de
Abstract – Anharmonicity present in the potentials of two capacitively coupled Josephson junctions allows for quantum excitations that localize energy on one junction during a time that sensitively depends on the excitation energy, and can be tuned through the bias current injected into the junctions. Manipulation techniques that nowadays are used for quantum information processing with Josephson junctions can be used to resolve the flow of energy between the junctions in time.
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Manuscript received October 30, 2007; accepted November 21, 2007. Reference No. ST11, Category 4. This is a shorter version of ref. [3], Europhysics Letters 79, 66002 (2007). Further results are described in http://xxx.lanl.gov/abs/0707.3955, accepted for publication in Phys. Rev. B. |
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