A Twisted Pair Cryogenic Filter
| dc.creator | Spietz, Lafe | |
| dc.creator | Teufel, John | |
| dc.creator | Schoelkopf, R. J. | |
| dc.date | 2006-01-15 | |
| dc.date.accessioned | 2026-07-07T06:57:34Z | |
| dc.date.available | 2026-07-07T06:57:34Z | |
| dc.description | In low temperature transport measurements, there is frequently a need to protect a device at cryogenic temperatures from thermal noise originating in warmer parts of the experiment. There are also a wide range of experiments, such as high precision transport measurements on low impedance devices, in which a twisted-pair wiring configuration is useful to eliminate magnetic pickup. Furthermore, with the rapid growth in complexity of cryogenic experiments, as in the field of quantum computing, there is a need for more filtered lines into a cryostat than are often available using the bulky low temperature filters in use today. We describe a low cost filter that provides the needed RF attenuation while allowing for tens of wires in a twisted pair configuration with an RF-tight connection to the sample holder. Our filter consists of manganin twisted pairs wrapped in copper tape with a light-tight connection to the shield of the sample holder. We demonstrate agreement of our filter with a theoretical model up to the noise floor of our measurement apparatus (90 dB). We describe operation of our filter in noise thermometry experiments down to 10 mK. | |
| dc.description | 12 pages,5 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0601316 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0601316 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/107016 | |
| dc.subject | Other Condensed Matter | |
| dc.title | A Twisted Pair Cryogenic Filter | |
| dc.type | text |