Reciprocal Quantum Logic

Reciprocal Quantum Logic (RQL) is a new kind of superconducting logic, invented by Quentin Herr at Northrop Grumman, which uses reciprocal pairs of quantized single magnetic flux pulses to encode classical logic bits.^[1]

In Reciprocal Quantum Logic (RQL) the data is encoded in integer units of the magnetic flux quantum. RQL gates operate without the bias resistors of previous superconducting logic families and dissipate several orders of magnitude less power. Key RQL gates include: AndOr, AnotB, Set/Reset, which together from a universal logic set and provide memory capabilities.^[2]

References

1. Superconducting Logic Circuits Operating With Reciprocal Magnetic Flux Quanta, University of Maryland, Oberg, Oliver Timothy, 2011
2. Superconducting Logic Circuits Operating With Reciprocal Magnetic Flux Quanta, University of Maryland, Oberg, Oliver Timothy, 2011

Also See

• Josephson junction
• superconductivity
• digital logic
• Niobium
• microwave