Three-wave mixing traveling-wave parametric amplifier with periodic variation of the circuit parameters

Abstract

We report the implementation of a near-quantum-limited, traveling-wave parametric amplifier that uses three-wave mixing (3WM). To favor amplification by 3WM, we use the superconducting nonlinear asymmetric inductive element (SNAIL) loops, biased with a dc magnetic flux. In addition, we equip the device with dispersion engineering features to create a stop-band at the second harmonic of the pump and suppress the propagation of the higher harmonics that otherwise degrade the amplification. With a chain of 440 SNAILs, the amplifier provides up to 20 dB gain and a 3-dB bandwidth of 1 GHz. The added noise by the amplifier is found to be less than one photon.

6 pages, 6 figures

References in corpus (4)

• Reducing intrinsic loss in superconducting resonators by surface treatment and deep etching of silicon substrates
• Theory of Multiwave Mixing within the Superconducting Kinetic-Inductance Traveling-Wave Amplifier
• Four wave-mixing in a microstrip kinetic inductance travelling wave parametric amplifier
• A high gain travelling-wave parametric amplifier based on three-wave mixing

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