Josephson Array Mode Parametric Amplifier
ORAL
Abstract
We introduce a novel near-quantum-limited amplifier with a large tunable bandwidth and high dynamic range – the Josephson Array Mode Parametric Amplifier (JAMPA). The signal and idler modes involved in the amplification process are realized by the array modes of a chain of 1000 flux tunable, Josephson-junction-based, nonlinear elements. The frequency spacing between array modes is comparable to the flux tunability of the modes, ensuring that any desired frequency can be occupied by a resonant mode, which can further be pumped to produce high gain. We experimentally demonstrate that the device can be operated as a nearly quantum-limited parametric amplifier with 20dB of gain at almost any frequency within (4−12)GHz band. On average, it has a 3dB bandwidth of 11MHz and input 1dB compression power of −108dBm, which can go as high as −93dBm. We envision the application of such a device to the time- and frequency-multiplexed readout of multiple qubits, as well as to the generation of continuous-variable cluster states.
–
Presenters
-
Volodymyr Sivak
Yale University
Authors
-
Volodymyr Sivak
Yale University
-
Shyam Shankar
Yale University
-
Gangqiang Liu
Applied Physics, Yale University, Yale University
-
Jose Aumentado
National Institute of Standards and Technology Boulder, National Institute of Standards and Technology, Physics Measurement Lab, National Institute of Standards and Technology
-
Michel H. Devoret
Yale University, Department of Applied Physics, Yale University, Applied Physics, Yale University