Scanning quantum decoherence microscopy

被引：99

作者：

Cole, Jared H. ^{[1
,2
]}

Hollenberg, Lloyd C. L. ^{[1
]}

机构：

[1] Univ Melbourne, Sch Phys, Ctr Quantum Comp Technol, Melbourne, Vic 3010, Australia

[2] Univ Karlsruhe, Inst Theoret Festkorperphys & DFG, CFN, D-76128 Karlsruhe, Germany

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 49期

基金：

澳大利亚研究理事会;

关键词：

SPIN; DYNAMICS; STATES;

D O I：

10.1088/0957-4484/20/49/495401

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The use of qubits as sensitive nanoscale magnetometers has been studied theoretically and recently demonstrated experimentally. In this paper we propose a new concept, in which a scanning two-state quantum system is used to probe a sample through the subtle effects of decoherence. Mapping both the Hamiltonian and decoherence properties of a qubit simultaneously provides a unique image of the magnetic (or electric) field properties at the nanoscale. The resulting images are sensitive to the temporal as well as spatial variation in the fields created by the sample. As examples we theoretically study two applications; one from condensed matter physics, the other biophysics. The individual components required to realize the simplest version of this device (characterization and measurement of qubits, nanoscale positioning) have already been demonstrated experimentally.

引用

页数：10

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