RECIPROCAL QUANTUM LOGIC BASED CIRCUITS FOR AN A-AND-NOT-B GATE

Superconducting circuits-based devices and methods, including reciprocal quantum logic (RQL) based devices and methods are provided. In one example, a circuit for an A-and-not-B gate including an output terminal, a first input terminal for receiving a first set of single flux quantum (SFQ) pulses, and a second input terminal for receiving a second set of SFQ pulses is provided. The circuit further includes a first Josephson junction (JJ) coupled to receive the first set of SFQ pulses. The circuit further includes a second JJ, where the second JJ when positively biased is configured to negatively bias the first JJ such that the circuit is configured to not pass the first set of SFQ pulses to the output terminal only when the second set of SFQ pulses have arrived at the second input terminal prior to an arrival of the first set of SFQ pulses at the first input terminal.