An rf Quantum Capacitance Parametric Amplifier
- URL: http://arxiv.org/abs/2304.13227v1
- Date: Wed, 26 Apr 2023 01:28:28 GMT
- Title: An rf Quantum Capacitance Parametric Amplifier
- Authors: A. El Kass, C. T. Jin, J. D. Watson, G. C. Gardner, S. Fallahi, M. J.
Manfra, and D. J. Reilly
- Abstract summary: Prototype narrowband amplifier exhibits a gain greater than 20 dB up to an input power of - 66 dBm (1 dB compression)
In contrast to superconducting amplifiers, the quantum capacitance parametric amplifier (QCPA) is operable at tesla-scale magnetic fields and temperatures ranging from milli kelvin to a few kelvin.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We demonstrate a radio-frequency parametric amplifier that exploits the
gate-tunable quantum capacitance of an ultra high mobility two dimensional
electron gas (2DEG) in a GaAs heterostructure at cryogenic temperatures. The
prototype narrowband amplifier exhibits a gain greater than 20 dB up to an
input power of - 66 dBm (1 dB compression), and a noise temperature TN of 1.3 K
at 370 MHz. In contrast to superconducting amplifiers, the quantum capacitance
parametric amplifier (QCPA) is operable at tesla-scale magnetic fields and
temperatures ranging from milli kelvin to a few kelvin. These attributes,
together with its low power (microwatt) operation when compared to conventional
transistor amplifiers, suggest the QCPA may find utility in enabling on-chip
integrated readout circuits for semiconductor qubits or in the context of space
transceivers and radio astronomy instruments.
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