High-power linear flux-pump system
AssigneeNorthrop Grumman Systems Corporation
InventorsHUGH PHILIPP, HAITAO O. DAI
Life of this patent
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Abstract
One example describes a linear flux-pump system. The system includes a trigger stage configured to generate a pulse train in response to an initialization current. The system also includes a current amplifier stage comprising a plurality of Josephson transmission line (JTL) stages configured to propagate MFQ pulses based on a clock signal in response to the pulse train. The system further includes a flux-pump stage configured to aggregate the MFQ pulses based on the clock signal to generate a DC output current.
Claims20
A linear flux-pump system comprising:
- a trigger stage configured to generate a pulse train in response to an initialization current;
- a current amplifier stage comprising a plurality of Josephson transmission line (JTL) stages configured to propagate multiple flux quanta (MFQ) pulses based on a clock signal in response to the pulse train;
- and
- a flux-pump stage configured to aggregate the MFQ pulses based on the clock signal to generate a DC output current.
A method for generating a DC output current, the method comprising:
- providing an initialization current to a trigger stage of a linear flux-pump system to generate a pulse train, the linear flux-pump system further comprising a current amplifier stage and a flux-pump stage;
- and
- providing a clock signal to the current amplifier stage and the flux-pump stage, the current amplifier stage being configured to generate multiple flux quanta (MFQ) pulses via Josephson transmission line (JTL) stages in response to the pulse train and the clock signal, and the flux-pump stage being configured to generate the DC output current in response to the MFQ pulses and the clock signal.
A linear flux-pump system comprising:
- a trigger stage configured to generate a pulse train in response to an initialization current;
- a current amplifier stage comprising:
- a first plurality of Josephson transmission line (JTL) stages configured to propagate first multiple flux quanta (MFQ) pulses based on a first phase of a clock signal in response to the pulse train;
- and
- a second plurality of JTL stages configured to propagate second MFQ pulses based on a second phase of the clock signal in response to the pulse train, the second phase being opposite the first phase;
- and
- a flux-pump stage comprising:
- a first long Josephson junction comprising a first plurality of Josephson junctions inductively coupled to the clock signal to trigger in response to the first MFQ pulses and the first phase of the clock signal to generate a first portion of a DC output current;
- and
- a second long Josephson junction comprising a second plurality of Josephson junctions inductively coupled to the clock signal to trigger in response to the second MFQ pulses and the second phase of the clock signal to generate a second portion of the DC output current.
Dependencies are inferred from the claim text.