Chinese Physics Letters

Programmable Quantum Processor with Quantum Dot Qubits

Yao Chen, Fo-Liang Lin, Xi Liang, Nian-Quan Jiang

Published Jul 1, 2019• 3 citations

Abstract

The realization of controllable couplings between any two qubits and among any multiple qubits is the critical problem in building a programmable quantum processor (PQP). We present a design to implement these types of couplings in a double-dot molecule system, where all the qubits are connected directly with capacitors and the couplings between them are controlled via the voltage on the double-dot molecules. A general interaction Hamiltonian of n qubits is presented, from which we can derive the Hamiltonians for performing operations needed in building a PQP, such as gate operations between arbitrary two qubits and parallel coupling operations for multigroup qubits. The scheme is realizable with current technology.

DOI: 10.1088/0256-307x/36/7/070302

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