A quantum circuit transformation (QCT) is required when executing a program in real processing unit (QPU). Through inserting auxiliary SWAP gates, QCT algorithm transforms to one that satisfies the connectivity constraint imposed by QPU. Due non-negligible gate error and limited qubit coherence time of QPU, algorithms which minimize number or depth maximize fidelity output circuits are urgent n...

Superconducting Single-Flux-Quantum (SFQ) devices have been paid much attention as alternative devices for digital circuits, because of their high switching speed and low power consumption. For large-scale circuit design, the role of computer-aided design environment is significant. As the characteristics of the SFQ devices are different from conventional devices, a new design environment is re...

Circuit reliability is an increasingly important design consideration for modern logic circuits. To this end, our work focuses on the evaluation of circuit reliability under probabilistic gate-level fault models that can capture both soft errors, e.g., radiation-related, and spatially-uniform manufacturing defects. This basic task can, in principle, be used (i) by synthesis procedures to select...

The preparation of quantum states using short quantum circuits is one of the most promising near-term applications of small quantum computers, especially if the circuit is short enough and the fidelity of gates high enough that it can be executed without quantum error correction. Such quantum state preparation can be used in variational approaches, optimizing parameters in the circuit to minimi...