A superconducting readout system (500; 700; 800) comprising: a computation qubit (502; 721, 722; 821, 822); a measurement device (503; 731; 831) configured to read out a state of the computation qubit (502; 721, 722; 821, 822); a first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) comprising a qubit loop formed by a loop of superconducting material and a compound Josephson junction that interrupts the qubit loop , wherein the compound Josephson junction is formed by a closed loop of superconducting material that is interrupted by at least two Josephson junctions ; and a first clock signal input structure configured to communicatively couple a clock signal to the compound Josephson junction of the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851), wherein the clock signal controls an operation of the first latch qubit by raising a barrier in a potential energy curve of the first latch qubit producing a "W" shaped potential energy curve for triggering latching, wherein the computation qubit (502; 721, 722; 821, 822) and the measurement device (503; 731; 831) are communicatively coupled to the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) such that a signal from the computation qubit (502; 721, 722; 821, 822) is coupled to the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851), the signal being latched by the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) when the clock signal pulses, and the signal is coupled from the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) to the measurement device (503; 731; 831), the measurement device (503; 731; 831) thereby reading out the state of the computation qubit (502; 721, 722; 821, 822) indirectly via the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851). a computation qubit (502; 721, 722; 821, 822); a measurement device (503; 731; 831) configured to read out a state of the computation qubit (502; 721, 722; 821, 822); a first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) comprising a qubit loop formed by a loop of superconducting material and a compound Josephson junction that interrupts the qubit loop , wherein the compound Josephson junction is formed by a closed loop of superconducting material that is interrupted by at least two Josephson junctions ; and a first clock signal input structure configured to communicatively couple a clock signal to the compound Josephson junction of the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851), wherein the clock signal controls an operation of the first latch qubit by raising a barrier in a potential energy curve of the first latch qubit producing a "W" shaped potential energy curve for triggering latching, wherein the computation qubit (502; 721, 722; 821, 822) and the measurement device (503; 731; 831) are communicatively coupled to the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) such that a signal from the computation qubit (502; 721, 722; 821, 822) is coupled to the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851), the signal being latched by the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) when the clock signal pulses, and the signal is coupled from the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851) to the measurement device (503; 731; 831), the measurement device (503; 731; 831) thereby reading out the state of the computation qubit (502; 721, 722; 821, 822) indirectly via the first latch qubit (300; 501; 601, 602, 603; 711, 712, 713; 841, 842, 843, 851). <EOS>