dorsal/arxiv
View SchemaModeling and Simulations of a Single-Spin Measurement using MRFM
| Authors | G. P. Berman, F. Borgonovi, V. N. Gorshkov, V. I. Tsifrinovich |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0410002 |
| URL | https://arxiv.org/abs/quant-ph/0410002 |
| DOI | 10.1109/TNANO.2004.840143 |
Abstract
We review the quantum theory of a single spin magnetic resonance force microscopy (MRFM). We concentrate on the novel technique called oscillating cantilever-driven adiabatic reversals (OSCAR), which has been used for a single spin detection (Dan Rugar, Talk on the 2004 IEEE NTC Quantum Device Technology Workshop). First we describe the quantum dynamics of the cantilever-spin system using simple estimates in the spirit of the mean field approximation. Then we present the results of our computer simulations of the Schrodinger equation for the wave function of the cantilever-spin system and of the master equation for the density matrix of the system. We demonstrate that the cantilever behaves like a quasi-classical measurement device which detects the spin projection along the effective magnetic field. We show that the OSCAR technique provides continuous monitoring of the single spin, which could be used to detect the mysterious quantum collapses of the wave function of the cantilever-spin system.
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"abstract": "We review the quantum theory of a single spin magnetic resonance force\nmicroscopy (MRFM). We concentrate on the novel technique called oscillating\ncantilever-driven adiabatic reversals (OSCAR), which has been used for a single\nspin detection (Dan Rugar, Talk on the 2004 IEEE NTC Quantum Device Technology\nWorkshop). First we describe the quantum dynamics of the cantilever-spin system\nusing simple estimates in the spirit of the mean field approximation. Then we\npresent the results of our computer simulations of the Schrodinger equation for\nthe wave function of the cantilever-spin system and of the master equation for\nthe density matrix of the system. We demonstrate that the cantilever behaves\nlike a quasi-classical measurement device which detects the spin projection\nalong the effective magnetic field. We show that the OSCAR technique provides\ncontinuous monitoring of the single spin, which could be used to detect the\nmysterious quantum collapses of the wave function of the cantilever-spin\nsystem.",
"arxiv_id": "quant-ph/0410002",
"authors": [
"G. P. Berman",
"F. Borgonovi",
"V. N. Gorshkov",
"V. I. Tsifrinovich"
],
"categories": [
"quant-ph",
"cond-mat.mtrl-sci",
"cond-mat.other"
],
"doi": "10.1109/TNANO.2004.840143",
"title": "Modeling and Simulations of a Single-Spin Measurement using MRFM",
"url": "https://arxiv.org/abs/quant-ph/0410002"
},
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