Adiabatic Control of the Electron Phase in a Quantum Dot

Details Adiabatic Control of the Electron Phase in a Quantum Dot Adiabatic Control of the Electron Phase in a Quantum Dot

2002-06-14

arxiv.org/abs/cond-mat/0206273v3

Phys. Rev. B 67, 155317 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

14 pages, 2 .eps figures

Scientific paper

10.1103/PhysRevB.67.155317

A Berry phase can be added to the wavefunction of an isolated quantum dot by adiabatically modulating a nonuniform electric field along a time-cycle. The dot is tuned close to a three-level degeneracy, which provides a wide range of possibilities of control. We propose to detect the accumulated phase by capacitively coupling the dot to a double-path inteferometer. The effective Hamiltonian for the phase-sensitive coupling is discussed in detail.

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