Spin coherent quantum transport of electrons between defects in diamond

Nanophotonics

article

Lachlan M. Oberg¹  Marcus W. Doherty¹  Eric Huang¹  Prithvi M. Reddy¹  Audrius Alkauskas²  Andrew D. Greentree³  Jared H. Cole³  Neil B. Manson¹  Carlos A. Meriles⁴ 

[1] Laser Physics Center, Research School of Physics and Engineering, Australian National University;Center for Physical Sciences and Technology;ARC Center of Excellence for Nanoscale BioPhotonics, School of Science, RMIT University;Department of Physics, CUNY-City College of New York

关键词: diamond;    STIRAP;    quantum transport;   

DOI  :  10.1515/nanoph-2019-0144

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

The nitrogen-vacancy (NV) color center in diamond has rapidly emerged as an important solid-state system for quantum information processing. Whereas individual spin registers have been used to implement small-scale diamond quantum computing, the realization of a large-scale device requires the development of an on-chip quantum bus for transporting information between distant qubits. Here, we propose a method for coherent quantum transport of an electron and its spin state between distant NV centers. Transport is achieved by the implementation of spatial stimulated adiabatic Raman passage through the optical control of the NV center charge states and the confined conduction states of a diamond nanostructure. Our models show that, for two NV centers in a diamond nanowire, high-fidelity transport can be achieved over distances of order hundreds of nanometers in timescales of order hundreds of nanoseconds. Spatial adiabatic passage is therefore a promising option for realizing an on-chip spin quantum bus.

【 授权许可】

CC BY