Rapid single flux quantum pulse multiplier
AssigneeInternational Business Machines Corporation
InventorsMatthew Beck, John Timmerwilke
Life of this patent
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Abstract
A method of generating an output signal based on a single flux quantum (SFQ) pulse includes receiving the SFQ pulse and splitting it into a first path and a second path. The split SFQ pulse of the second path is stored in a latch. A second splitting of the split SFQ pulse of the first path is provided to provide a first output signal and a second output signal of the first path. The second output signal is delayed by a delay Josephson transmission line (JTL). An output of the delay JTL is provided as a clock input to the latch. The first output of the first path is recombined with an output of the latch to provide an output signal.
Claims20
A method of generating an output signal based on a single flux quantum (SFQ) pulse, the method comprising:
- receiving the SFQ pulse;
- splitting the SFQ pulse into a first path and a second path;
- storing the split SFQ pulse of the second path in a latch;
- providing a second splitting of the split SFQ pulse of the first path to provide a first output signal and a second output signal of the first path;
- delaying the second output signal by a delay Josephson transmission line (JTL);
- providing an output of the delay JTL as a clock input to the latch;
- and
- recombining the first output of the first path with an output of the latch to provide an output signal.
A circuit, comprising:
- a first splitter having a first output and a second output and configured to receive a single flux quantum (SFQ) pulse;
- a second splitter coupled to a first output of the first splitter;
- a delay Josephson transmission line (JTL) coupled to a second output of the second splitter;
- a latch having a data input coupled to the second output of the first splitter and a clock input coupled to an output of the delay JTL;
- and
- a recombination circuit configured to receive the second output of the second splitter and an output of the latch to provide a recombined output.
Dependencies are inferred from the claim text.