Electronic Resource
Springer
Journal of low temperature physics
52 (1983), S. 1-13
ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The time variation of the quantum phase difference and the radiated power of two resistively shunted junctions in a superconducting loop are analyzed using a first harmonic approximation method. It is shown explicitly that an output coupling impedance connected across the junctions plays an important role in determining the output power as well as the cutoff frequency in the radiation spectrum. The radiated power of an array of dc SQUIDs is compared with the power output of a synchronized series array in a resonant cavity. WithN superconducting weak links coupled to a fixed load, the SQUID array suffers an output power saturation for largeN; our analysis shows that it is very difficult to obtain radiated power higher than a few microwatts. On the other hand, a cavity-coupled large array gives an output power proportional toN with a narrow linewidth, suggesting that it could be very useful in practice.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00681260
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