Sigrist, Martin and Ihn, Thomas and Ensslin, Klaus and Reinwald, Matthias and Wegscheider, Werner
Coherent Probing of Excited Quantum Dot States in an Interferometer.
Physical Review Letters 98 (3), 036805.
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Measurements of elastic and inelastic cotunneling currents are presented on a two-terminal Aharonov-Bohm interferometer with a Coulomb-blockaded quantum dot embedded in each arm. Coherent current contributions, even in a magnetic field, are found in the nonlinear regime of inelastic cotunneling at a finite-bias voltage. The phase of the Aharonov-Bohm oscillations in the current exhibits phase ...
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