A low-noise series-array Josephson junction parametric amplifier

Journal Article · Thu Oct 31 23:00:00 EST 1996 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.116845· OSTI ID:389244

Yurke, B; Roukes, M L; Movshovich, R; Pargellis, A N ^[1]

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1. Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 (United States)

We have obtained parametric gain at 19 GHz from a distributed Josephson junction parametric amplifier whose active gain medium consists of a series array of 1000 Josephson junctions embedded in a coplanar waveguide. When cooled to 1.7 K the amplifier provides 16 dB gain in a mode where the internally generated double sideband noise referred to input is 0.5{plus_minus}0.1 K. This noise is consistent with Nyquist noise generated from the losses. An instantaneous bandwidth of 125 MHz has been observed with a peak gain of 12 dB. The 3 dB compression point with a peak gain of 14.6 dB is -90.5 dB and the dynamic range is 38 dB. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 389244
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 69; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
66 PHYSICS
ARRAYS
CRITICAL CURRENT
GAIN
JOSEPHSON JUNCTIONS
MICROWAVE AMPLIFIERS
NOISE
PARAMETRIC AMPLIFIERS
PERFORMANCE
WAVEGUIDES