Coherent population transfer in a chain of tunnel coupled quantum dots

Abstract

We consider the dynamics of a single electron in a chain of tunnel coupled quantum dots, exploring the formal analogies of this system with some of the laser-driven multilevel atomic or molecular systems studied by Bruce W. Shore and collaborators over the last 30 years. In particular, we describe two regimes for achieving complete coherent transfer of population in such a multistate system. In the first regime, by carefully arranging the coupling strengths, the flow of population between the states of the system can be made periodic in time. In the second regime, by employing a "counterintuitive" sequence of couplings, the coherent population trapping eigenstate of the system can be rotated from the initial to the final desired state, which is an equivalent of the STIRAP technique for atoms or molecules. Our results may be useful in future quantum computation schemes.

References in corpus (3)

• Perfect Transfer of Arbitrary States in Quantum Spin Networks
• Coherent electronic transfer in quantum dot systems using adiabatic passage
• Electron wavepacket propagation and entanglement in a chain of coupled quantum dots

Cited by in corpus (10)

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• Measurement back-action on adiabatic coherent electron transport
• Adiabatic quantum state transfer in tight-binding chains using periodic driving fields
• Resonant optical electron transfer in one-dimensional multiwell structures
• Parity-dependent state transfer for direct entanglement generation
• Sensing electrons during an adiabatic coherent transport passage