Programmable Quantum Processor with Quantum Dot Qubits
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.
- Publication:
-
Chinese Physics Letters
- Pub Date:
- July 2019
- DOI:
- 10.1088/0256-307X/36/7/070302
- Bibcode:
- 2019ChPhL..36g0302C
- Keywords:
-
- 03.67.Lx;
- 42.50.Dv;
- 42.50.Pq;
- 85.35.Be