Adiabatic quantum state transfer in non-uniform triple-quantum-dot system

Details Adiabatic quantum state transfer in non-uniform triple-quantum-dot system Adiabatic quantum state transfer in non-uniform triple-quantum-dot system

2010-10-18

arxiv.org/abs/1010.3505v2

Phys. Rev. A 83, 014301 (2011)

Physics

Quantum Physics

6 pages, 5 figures

Scientific paper

10.1103/PhysRevA.83.014301

We introduce an adiabatic quantum state transfer scheme in a non-uniform coupled triple-quantum-dot system. By adiabatically varying the external gate voltage applied on the sender and receiver, the electron can be transferred between them with high fidelity. By numerically solving the master equation for a system with always-on interaction, it is indicated that the transfer fidelity depends on the ration between the peak voltage and the maximum coupling constants. The effect of coupling mismatch on the transfer fidelity is also investigated and it is shown that there is a relatively large tolerance range to permit high fidelity quantum state transfer.

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