Non-collapsing electric readout of arbitrary Andreev qubits
Non-collapsing electric readout of arbitrary Andreev qubits
Nondemolition protocols use ancilla qubits to identify the fragile quantum state of a qubit without destroying its encoded information, thus playing a crucial role in nondestructive quantum measurements particularly relevant for quantum error correction. However, the multitude of ancilla preparations, information transfers, and ancilla measurements in these protocols create an …