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Title: Strong coupling between two distant electronic spins via a nanomechanical resonator

Abstract

We propose a scheme to achieve a strong coupling between two distant symmetrically placed electronic spins (such as nitrogen-vacancy centers in diamonds) by using a quantized nanomechanical resonator (NAMR) as a data bus. These distant spins (without any direct interaction) simultaneously couple to a common NAMR. When the detunings between effective spin transition frequencies and the fundamental frequency of the NAMR are large enough, an effective coupling could be induced between the two distant electronic spins. The value of such a coupling could be significantly large (i.e., up to a few kilohertz). This induced interaction between the two spins can be used to implement an iSWAP quantum gate, and to probabilistically prepare two-spin maximal entangled states by detecting the frequency shifts of the NAMR.

Authors:
;  [1];  [2];  [1]
  1. Department of Physics, Tsinghua University, Beijing 100084 (China)
  2. Quantum Optoelectronics Institute, Southwest Jiaotong University, Chengdu 610031 (China)
Publication Date:
OSTI Identifier:
21408582
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 81; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.81.042323; (c) 2010 The American Physical Society; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COUPLING; DIAMONDS; INTERACTIONS; NITROGEN; QUANTUM ENTANGLEMENT; RESONATORS; SPIN; VACANCIES; ANGULAR MOMENTUM; CARBON; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; MINERALS; NONMETALS; PARTICLE PROPERTIES; POINT DEFECTS

Citation Formats

Ligong, Zhou, Xiangbin, Wang, Wei, L F, Ming, Gao, and Department of Physics, National University of Defense Technology, Changsha 410073. Strong coupling between two distant electronic spins via a nanomechanical resonator. United States: N. p., 2010. Web. doi:10.1103/PHYSREVA.81.042323.
Ligong, Zhou, Xiangbin, Wang, Wei, L F, Ming, Gao, & Department of Physics, National University of Defense Technology, Changsha 410073. Strong coupling between two distant electronic spins via a nanomechanical resonator. United States. https://doi.org/10.1103/PHYSREVA.81.042323
Ligong, Zhou, Xiangbin, Wang, Wei, L F, Ming, Gao, and Department of Physics, National University of Defense Technology, Changsha 410073. 2010. "Strong coupling between two distant electronic spins via a nanomechanical resonator". United States. https://doi.org/10.1103/PHYSREVA.81.042323.
@article{osti_21408582,
title = {Strong coupling between two distant electronic spins via a nanomechanical resonator},
author = {Ligong, Zhou and Xiangbin, Wang and Wei, L F and Ming, Gao and Department of Physics, National University of Defense Technology, Changsha 410073},
abstractNote = {We propose a scheme to achieve a strong coupling between two distant symmetrically placed electronic spins (such as nitrogen-vacancy centers in diamonds) by using a quantized nanomechanical resonator (NAMR) as a data bus. These distant spins (without any direct interaction) simultaneously couple to a common NAMR. When the detunings between effective spin transition frequencies and the fundamental frequency of the NAMR are large enough, an effective coupling could be induced between the two distant electronic spins. The value of such a coupling could be significantly large (i.e., up to a few kilohertz). This induced interaction between the two spins can be used to implement an iSWAP quantum gate, and to probabilistically prepare two-spin maximal entangled states by detecting the frequency shifts of the NAMR.},
doi = {10.1103/PHYSREVA.81.042323},
url = {https://www.osti.gov/biblio/21408582}, journal = {Physical Review. A},
issn = {1050-2947},
number = 4,
volume = 81,
place = {United States},
year = {Thu Apr 15 00:00:00 EDT 2010},
month = {Thu Apr 15 00:00:00 EDT 2010}
}