SFQ-based pulse-conserving logic gates

A method comprising:

• providing a single-flux-quantum (SFQ) based input to a Josephson junction based logic device, wherein the Josephson junction based logic device comprises an OMA3 gate, wherein the OMA3 gate comprises:
• a first OMA3 input node inductively coupled to a first OMA3 input source;
• a second OMA3 input node inductively coupled to a second OMA3 input source;
• a third OMA3 input node inductively coupled to a third OMA3 input source, wherein the first OMA3 input source, the second OMA3 input source, and the third OMA3 input source are configured to provide single-flux-quantum (SFQ) pulses;
• a first plurality of OMA3 inductors coupled between the first OMA3 input node and one of:
• a first OMA3 output node, a second OMA3 output node, or a third OMA3 output node;
• a second plurality of OMA3 inductors coupled between the second OMA3 input node and one of:
• the first OMA3 output node, the OMA3 second output node, or the OMA3 third output node;
• a third plurality of OMA3 inductors coupled between the third OMA3 input node and one of:
• the first OMA3 output node, the second OMA3 output node, or the third OMA3 output node;
• and
• a plurality of OMA3 Josephson junctions, wherein each OMA3 Josephson junction is coupled between a common node and one of:
• the first OMA3 input node, the second OMA3 input node, the third OMA3 input node, the first OMA3 output node, the OMA3 second output node, or the third OMA3 output node.

A Josephson junction based logic device comprising:

• a three-input OR/MAJ/AND (OMA3) gate, wherein the OMA3 gate comprises:
• a first input node inductively coupled to a first input source;
• a second input node inductively coupled to a second input source;
• a third input node inductively coupled to a third input source, wherein the first input source, the second input source, and the third input source are configured to provide single-flux-quantum (SFQ) pulses;
• a first plurality of inductors coupled between the first input node and one of:
• a first output node, or a second output node;
• a second plurality of inductors coupled between the second input node and one of:
• the first output node or the second output node;
• a third plurality of inductors coupled between the third input node and one of:
• the first output node or the second output node;
• and
• a plurality of Josephson junctions, wherein each Josephson junction is coupled between a common node and one of:
• the first input node, the second input node, the third input node, the first output node, or the second output node.