dorsal/arxiv
View SchemaCryogenic small-signal conversion with relaxation oscillations in Josephson junctions
| Authors | Miha Furlan |
|---|---|
| Categories | |
| ArXiv ID | physics/0512072 |
| URL | https://arxiv.org/abs/physics/0512072 |
| DOI | 10.1063/1.2218984 |
| Journal | J. Appl. Phys. 100, 034511 (2006) |
Abstract
Broadband detection of small electronic signals from cryogenic devices, with the option of simple implementation for multiplexing, is often a highly desired, although non-trivial task. We investigate and demonstrate a small-signal analog-to-frequency conversion system based on relaxation oscillations in a single Josephson junction. Operation and stability conditions are derived, with special emphasis on noise analysis, showing the dominant noise sources to originate from fluctuation processes in the junction. At optimum conditions the circuit is found to deliver excellent noise performance over a broad dynamic range. Our simple models apply within the regime of classical Josephson junction and circuit dynamics, which we confirm by experimental results. A discussion on possible applications includes a measurement of the response to a cryogenic radiation detector.
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"abstract": "Broadband detection of small electronic signals from cryogenic devices, with\nthe option of simple implementation for multiplexing, is often a highly\ndesired, although non-trivial task. We investigate and demonstrate a\nsmall-signal analog-to-frequency conversion system based on relaxation\noscillations in a single Josephson junction. Operation and stability conditions\nare derived, with special emphasis on noise analysis, showing the dominant\nnoise sources to originate from fluctuation processes in the junction. At\noptimum conditions the circuit is found to deliver excellent noise performance\nover a broad dynamic range. Our simple models apply within the regime of\nclassical Josephson junction and circuit dynamics, which we confirm by\nexperimental results. A discussion on possible applications includes a\nmeasurement of the response to a cryogenic radiation detector.",
"arxiv_id": "physics/0512072",
"authors": [
"Miha Furlan"
],
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"physics.ins-det"
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"doi": "10.1063/1.2218984",
"journal_ref": "J. Appl. Phys. 100, 034511 (2006)",
"title": "Cryogenic small-signal conversion with relaxation oscillations in Josephson junctions",
"url": "https://arxiv.org/abs/physics/0512072"
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