dorsal/arxiv
View SchemaNegative result measurements in mesoscopic systems
| Authors | S. A. Gurvitz |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0303177 |
| URL | https://arxiv.org/abs/quant-ph/0303177 |
| DOI | 10.1016/S0375-9601(03)00508-5 |
| Journal | Phys. Lett. A 311 (2003) 292 |
Abstract
We investigate measurement of electron transport in quantum dot systems by using single-electron transistor as a noninvasive detector. It is demonstrated that such a detector can operate in the ``negative-result measurement'' regime. In this case the measured current is not distorted, providing that it is a non-coherent one. For a coherent transport, however, the possibility of observing a particular state out of coherent superposition leads to distortion of a measured current even in the ``negative-result measurement'' regime. The corresponding decoherence rate is obtained in the framework of quantum rate equations.
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"abstract": "We investigate measurement of electron transport in quantum dot systems by\nusing single-electron transistor as a noninvasive detector. It is demonstrated\nthat such a detector can operate in the ``negative-result measurement\u0027\u0027 regime.\nIn this case the measured current is not distorted, providing that it is a\nnon-coherent one. For a coherent transport, however, the possibility of\nobserving a particular state out of coherent superposition leads to distortion\nof a measured current even in the ``negative-result measurement\u0027\u0027 regime. The\ncorresponding decoherence rate is obtained in the framework of quantum rate\nequations.",
"arxiv_id": "quant-ph/0303177",
"authors": [
"S. A. Gurvitz"
],
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"quant-ph",
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"doi": "10.1016/S0375-9601(03)00508-5",
"journal_ref": "Phys. Lett. A 311 (2003) 292",
"title": "Negative result measurements in mesoscopic systems",
"url": "https://arxiv.org/abs/quant-ph/0303177"
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