J4 ›› 2012, Vol. 29 ›› Issue (6): 688-694.

• Quantum Optics • Previous Articles     Next Articles

Reseach on fault detection, location and self-repairing of quantum logic circuits

Zhang Peixi,Wang Youren,Chen Yan   

  1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics,  Nanjing  210016, China
  • Received:2011-11-29 Revised:2012-01-16 Published:2012-11-28 Online:2014-03-20

Abstract:

Aiming at the enlarging scale of quantum logic circuits and the degradation of reliability, a new online error detecting method based on single quantum gate is proposed. The method designs a new signal generation gate and an error detection gate and uses parity-preserving characteristic to detect the error of the circuits. In the meantime, the method can detect the signal generation gate, ensuring the correctness of the gate. In addition, a new self-repairing method for quantum logic circuits base on hardware redundancy is given. The results show that the new method can detect all the error with less quantum gates and garbage outputs, and first-realized self repairing method increases the fault-tolerance capability and reliability of the quantum circuits.

Key words: quantum optics, quantum logic circuits, error detection, fault location, self-repair, parity-preserving

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