Kinetic inductance parametric amplifier
AssigneeSilicon Quantum Computing Pty Limited
InventorsJarryd Pla, Mykhailo Savytskyi
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Abstract
The present disclosure relates to a kinetic inductance parametric amplifier that comprises an input port arranged to receive a pump tone, a DC bias and input signal; an output port arranged to provide an amplified version of the input signal; a tunable stepped-impedance assembly arranged to attenuate and/or filter predetermined frequency bands; and a high kinetic inductance line. The tunable stepped-impedance assembly is tuned at a frequency that allows for the amplifier to resonate at a predetermined frequency and a pump tone with a frequency higher than the input signal and a DC biasing signal to be transmitted to the high kinetic inductance line.
Claims18
A kinetic inductance parametric amplifier comprising:
- an input port arranged to receive a pump tone, a DC bias and input signal;
- an output port arranged to provide an amplified version of the input signal;
- a tunable stepped-impedance assembly comprising a bandstop filter arranged to attenuate and/or filter predetermined frequency bands;
- and
- a high kinetic inductance line;
- wherein the tunable stepped-impedance assembly is tuned at a frequency that allows for the kinetic inductance parametric amplifier to resonate at a predetermined frequency and wherein the pump tone has a frequency higher than the frequency of the input signal and the DC bias signal is transmitted to the high kinetic inductance line.
A method for performing parametric amplification with a kinetic inductance parametric amplifier comprising the step of:
- providing a kinetic inductance parametric amplifier comprising:
- an input port arranged to receive a pump tone, a DC bias and an input signal;
- an output port arranged to provide an amplified version of the input signal;
- a tunable stepped-impedance assembly comprising a bandstop filter arranged to attenuate and/or filter predetermined frequency bands;
- and a high kinetic inductance line;
- wherein the tunable stepped-impedance assembly is tuned at a frequency that allows for the kinetic inductance parametric amplifier to resonate at a predetermined frequency and wherein the pump tone has a frequency higher than the frequency of the input signal and the DC bias signal is transmitted to the high kinetic inductance line;
- applying a DC signal configured to modify the kinetic inductance and one or more filtering properties of the stepped-impedance assembly;
- applying the pump tone and the input signal to the input port;
- and
- detecting the amplified version of the input signal at the output port.
A kinetic inductance parametric amplifier for performing phase-sensitive amplification, the amplifier comprising:
- an input port arranged to receive a pump tone, a DC bias and input signal;
- an output port arranged to provide an amplified or de-amplified version of the input signal;
- a tunable stepped-impedance assembly arranged to attenuate and/or filter predetermined frequency bands;
- and
- a high kinetic inductance line;
- wherein the tunable stepped-impedance assembly is tuned at a frequency that allows for the amplifier to resonate at a predetermined frequency and wherein the pump tone has a frequency twice that of the input signal and wherein the DC biasing signal is transmitted to the high kinetic inductance line.
Dependencies are inferred from the claim text.