Development and characterization of a flux-pumped lumped element Josephson parametric amplifier
| Autor: | J. Rahamim, Brian Vlastakis, Takahiro Tsunoda, James Wills, Peter Leek, Giulio Campanaro, Giovanna Tancredi, Sophia Sosnina, Martina Esposito, M. Mergenthaler, Andrew Patterson, Salha Jebari, Kitty Ratter, Peter Spring |
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| Rok vydání: | 2019 |
| Předmět: |
Superconductivity
Physics business.industry QC1-999 Bandwidth (signal processing) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Inductance Qubit Condensed Matter::Superconductivity 0103 physical sciences Quantum interference Optoelectronics Figure of merit Parametric oscillator 010306 general physics 0210 nano-technology business Parametric statistics |
| Zdroj: | EPJ Web of Conferences, Vol 198, p 00008 (2019) |
| DOI: | 10.1051/epjconf/201919800008 |
| Popis: | Josephson parametric amplification is a tool of paramount importance in circuit-QED especially for the quantum-noise-limited single-shot read-out of superconducting qubits. We developed a Josephson parametric amplifier (JPA) based on a lumped-element LC resonator, in which the inductance L is composed by a geometric inductance and an array of 4 superconducting quantum interference devices (SQUIDs). We characterized the main figures of merit of the device, obtaining a −3 dB bandwidth BW = 15 MHz for a gain G = 21 dB and a 1 dB compression point P1dB = −115 dBm. The obtained results are promising for the future use of such JPA as the first stage of amplification for single-shot readout of superconducting qubits. |
| Databáze: | OpenAIRE |
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