An Efficient Quantum Private Comparison of Equality over Collective-Noise Channels

Chih Hung Chang, Tzonelih Hwang, Prosanta Gope

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This article proposes a collective-noise resistant QPC protocol with the help of an almostdishonest third party (TP) who may try to perform any sort of attacks to derive participants’ private secrets except colluding with any participant. The proposed scheme has some considerable advantages over the state-of-the-art QPC protocols over collective-noise channels, where it does not require any pre-shared key between the participants (Alice and Bob). Nevertheless, the proposed scheme can resist Trojan horse attacks without consuming half of the transmitted qubits and any additional equipment (wavelength filter and PNS) support. As a consequence, the proposed QPC protocol can guarantee higher qubit efficiency as compared to the others over collective noise channels.

Original languageEnglish
Pages (from-to)2125-2138
Number of pages14
JournalInternational Journal of Theoretical Physics
Issue number4
Publication statusPublished - 2016 Apr 1

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Physics and Astronomy (miscellaneous)


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