Controlled phase gate and Grover’s search algorithm on two distant NV-centers assisted by an NAMR

• Published in: Quantum information processing Vol. 19; no. 6
• Main Authors: Hua, Ming, Tao, Ming-Jie, Zhou, Zeng-Rong, Wei, Hai-Rui
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2020; Springer Nature B.V
• Subjects: Accuracy; Computer simulation; Data Structures and Information Theory; Mathematical Physics; Physics; Physics and Astronomy; Quantum Computing; Quantum Information Technology; Quantum Physics; Qubits (quantum computing); Search algorithms; Spintronics; Nanomechanical cantilevel resonator; Nitrogen vacancy center; Quantum computation; Universal quantum gate; Grover’s search algorithm
• ISSN: 1570-0755; 1573-1332
• DOI: 10.1007/s11128-020-02682-w

We propose a scheme to construct a controlled phase gate on two distant nitrogen-vacancy centers (NV-centers) assisted by a quantized nanomechanical cantilevel resonator (NAMR). Unlike the previous work to complete the gate in the dispersive regime to let NV-centers detune with the NAMR largely, our gate is completed by using resonant operations between NV-centers and the NAMR, and single-qubit operations on the NV-center, which let the gate to be achieved within a short time with a high fidelity. To study the performance of the gate for universal quantum computation, we simulate a two-qubit Grover’s search algorithm on the NV-centers with a fidelity of 98.46 % .