Quantum Measurement of a Single Spin using Magnetic Resonance Force Microscopy

Abstract

Single-spin detection is one of the important challenges facing the development of several new technologies, e.g. single-spin transistors and solid-state quantum computation. Magnetic resonance force microscopy with a cyclic adiabatic inversion, which utilizes a cantilever oscillations driven by a single spin, is a promising technique to solve this problem. We have studied the quantum dynamics of a single spin interacting with a quasiclassical cantilever. It was found that in a similar fashion to the Stern-Gerlach interferometer the quantum dynamics generates a quantum superposition of two quasiclassical trajectories of the cantilever which are related to the two spin projections on the direction of the effective magnetic field in the rotating reference frame. Our results show that quantum jumps will not prevent a single-spin measurement if the coupling between the cantilever vibrations and the spin is small in comparison with the amplitude of the radio-frequency external field.

16 pages RevTeX including 4 figures

Cited by in corpus (7)

• All-Electrical Quantum Computation with Mobile Spin Qubits
• Single spin measurement using spin-orbital entanglement
• Cooling a magnetic resonance force microscope via the dynamical back-action of nuclear spins
• Quantum Dissipative Dynamics of the Magnetic Resonance Force Microscope in the Single-Spin Detection Limit
• Modeling and Simulations of a Single-Spin Measurement using MRFM
• A Model for Quantum Jumps in Magnetic Resonance Force Microscopy
• Quantum trajectory analysis for electrical detection of single-electron spin resonance