Realistic simulations of single-spin nondemolition measurement by magnetic resonance force microscopy
Journal
Physical Review A - Atomic, Molecular, and Optical Physics
Journal Volume
68
Journal Issue
3
Date Issued
2003
Author(s)
Brun, T.A.
Abstract
A requirement for many quantum computation schemes is the ability to measure single spins. This paper examines one proposed scheme: magnetic resonance force microscopy (MRFM), including the effects of thermal noise and back action from monitoring. We derive a simplified equation using the adiabatic approximation and produce a stochastic pure state unraveling which is useful for numerical simulations. We also calculate the signal-to-noise ratio for single-spin measurement by MRFM, using a quantum Langevin equation approach.
SDGs
Type
journal article