2017/04/06 by Wen-Qi Fang, Bang-Gui Liu
Materials Science · Physics and Astronomy · #Center (category theory) #Diamond #Diamond and Carbon-based Materials Research #Geometric phase #Graphene research and applications #Magnetic field #Operator (biology) #Quantum #Quantum and electron transport phenomena #Quantum computer #Spin (aerodynamics) #Spin engineering #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1088/1361-6463/aa7f1a
published as J. Phys. D: Appl. Phys. 50 (2017) 375002 · 5 pages, 4 figures
arxiv created 2017/04/06 · openalex created_date 2017/04/28 · openalex publication_date 2017/07/11 · arxiv updated 2017/08/25 · openalex updated_date 2026/08/05
Abstract Fast quantum spin manipulation is needed to design spin-based quantum logic gates and other quantum applications. Here, we construct the exact evolution operator of the nitrogen-vacancy-center (NV) spin in diamond under external magnetic fields, and investigate the nonadiabatic geometric phases—both cyclic and non-cyclic—in these fast-manipulated NV spin systems. It is believed that the nonadiabatic geometric phases can be measured in future experiments, and that these fast quantum manipulations can be useful in designing spin-based quantum applications.