| Zugriffsnummer | 30397 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Theory of signal and noise performance of superconducting quantum interferometers with two quantization loops |
| Autor(in); Institution |
Greenberg, Yakov S.; Novosibirsk Technical University, Novosibirsk, RUSSIA
Krivoy, Gennady; 9.33, Kryoelektronik, PTB-Berlin
Koch, Hans; 9.33, Kryoelektronik, PTB-Berlin
|
| Quelle/Jahr | Journal of Applied Physics: 77 (1995), 9, 4783 - 4794 |
| ISSN | 0021-8979 (PRINT) ; 1089-7550 (ONLINE) |
| DOI | |
| Verlag | Melville, NY: AIP |
| Freie Schlagworte | Josephson junctions ; superconducting quantum interference devices ; superconductivity ; superconductivity models |
| Zusammenfassung | The superconducting quantum interferometer with two quantization loops, the so‐called double SQUID, or D‐SQUID, is a modification of the well‐known rf SQUID. The modification consists of a replacement of the one junction of the rf SQUID by a superconducting loop with two Josephson junctions. This device can be used to transform the weak magnetic flux applied to the loop with junctions to a voltage across the tank circuit inductively coupled to the other loop. As has previously been shown in experiments [G. S. Krivoy and H. Koch, J. Appl. Phys. 74, 2925 (1993)], D‐SQUIDs have an extremely large output signal swing up to 1 mV and a transfer function of several mV/(h/2e). In this paper, a D‐SQUID theory using a numerical and an analytical approach is developed. The theoretical results are compared with the above‐mentioned experiments. |
