A method, device, computer storage medium and terminal for constructing logic gates

Abstract

A method, device, computer storage medium, and terminal for constructing a logic gate, comprising: non-resonantly driving ion electric quadrupole moment transition to generate a phase shift related to the quantum state of the ion; generating a phase shift related to the quantum state of the ion After the associated phase shift, a single-bit operation is performed on the ion to obtain a two-qubit controllable geometric phase logic gate; wherein, the phase shift associated with the quantum state of the ion is used to: by the hyperfine energy level structure middle two m F On the qubit |0>, |1> state formed by the magnon energy level of 0. In the embodiment of the present invention, after the phase shift related to the quantum state is generated by the electric quadrupole moment transition, a single-bit operation is performed on the ion, and the energy level m of the magneton is realized. F Geometric phase logic gates on qubits of 0.

Description

technical field [0001] This article involves but is not limited to computer technology, especially a method, device, computer storage medium and terminal for constructing logic gates. Background technique [0002] A quantum computer is a device that uses quantum logic gates for general-purpose quantum computing and quantum simulation. The basic logic unit that constitutes a quantum computer is composed of qubits that obey the principles of quantum mechanics, combined with universal single-bit and double-bit quantum logic gates, which can realize arbitrary logic gate operations. Complex quantum algorithms can be decomposed into several single-bit and double-bit quantum logic gates, through which a large number of qubits can be coherently manipulated, a quantum computer can be physically realized. Under experimental conditions, high-fidelity quantum logic gate operations have been realized on ion qubit arrays trapped in ion traps; ion qubits have a coherence time of more than...

AI Technical Summary

Problems solved by technology

The transition frequency between this pair of magnon energy levels is generally in the microwave frequency range, and the impact of the transition frequency with the fluctuation of the external magnetic field is very small, and its coherence time can reach more than 10 seconds, which is an ideal qubit carrier; but the magnon energy The Stark frequency shift produced by the level pair under the action of laser is basically the same, and there is no sufficient phase difference in the evolution process of the two ground state energy levels.

Therefore, the geometric phase logic gates in the related art cannot be controlled by m F Efficient implementation on qubits composed of two magnon energy levels = 0

Images