quantum private comparison against decoherence noise

In this paper, we propose a quantum private comparison scheme which can be used in decoherence noise scenario. With the combination of decoherence-free states and error-correcting code, it achieves a fault tolerant quantum private comparison to prevent collective decoherence noise and limited other decoherence noise. And the third party used in the protocol is not needed to be semi-honest. © 2012 Springer Science+Business Media New York.In this paper, we propose a quantum private comparison scheme which can be used in decoherence noise scenario. With the combination of decoherence-free states and error-correcting code, it achieves a fault tolerant quantum private comparison to prevent collective decoherence noise and limited other decoherence noise. And the third party used in the protocol is not needed to be semi-honest. © 2012 Springer Science+Business Media New York