Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment
We present a bidirectional quantum key distribution protocol with minimal encoding operations derived from the use of only two “nonorthogonal” unitary transformations selected from two mutually unbiased unitary bases. Differently from many bidirectional protocols, these transformations are indisting...
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my.iium.irep.627452018-04-13T02:06:43Z http://irep.iium.edu.my/62745/ Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment Shamsul Shaari, Jesni Soekardjo, Suryadi QC Physics We present a bidirectional quantum key distribution protocol with minimal encoding operations derived from the use of only two “nonorthogonal” unitary transformations selected from two mutually unbiased unitary bases. Differently from many bidirectional protocols, these transformations are indistinguishable in principle for a single use. Along with its decoding pro- cedure, it is unique compared to its “orthogonal encoding” predecessors. Given the nature of such protocols where key rates are usually dependent on two different types of error rates, we define a more relevant notion of security threshold for such protocols to allow for proper com- parisons to be made. The current protocol outperforms its predecessor in terms of security as the amount of information an eavesdropper can glean is limited by the indistinguishability of the transformations. We further propose adaptations for a practical scenario and report on a proof of concept experimental scheme based on polarised photons from an attenuated pulsed laser for qubits, demonstrating the feasibility of such a protocol. IOP Publishing 2017-12 Article REM application/pdf en http://irep.iium.edu.my/62745/8/62745%20Indistinguishable%20encoding%20for%20bidirectional%20quantum.pdf application/pdf en http://irep.iium.edu.my/62745/7/62745%20Indistinguishable%20encoding%20SCOPUS.pdf Shamsul Shaari, Jesni and Soekardjo, Suryadi (2017) Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment. EPL (Europhysics Letters),, 120 (6). p1-p7. ISSN 0295-5075 http://iopscience.iop.org/article/10.1209/0295-5075/120/60001/pdf 10.1209/0295-5075/120/60001 |
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QC Physics Shamsul Shaari, Jesni Soekardjo, Suryadi Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment |
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We present a bidirectional quantum key distribution protocol with minimal encoding operations derived from the use of only two “nonorthogonal” unitary transformations selected from two mutually unbiased unitary bases. Differently from many bidirectional protocols, these transformations are indistinguishable in principle for a single use. Along with its decoding pro- cedure, it is unique compared to its “orthogonal encoding” predecessors. Given the nature of such protocols where key rates are usually dependent on two different types of error rates, we define a more relevant notion of security threshold for such protocols to allow for proper com- parisons to be made. The current protocol outperforms its predecessor in terms of security as the amount of information an eavesdropper can glean is limited by the indistinguishability of the transformations. We further propose adaptations for a practical scenario and report on a proof of concept experimental scheme based on polarised photons from an attenuated pulsed laser for qubits, demonstrating the feasibility of such a protocol. |
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Article |
author |
Shamsul Shaari, Jesni Soekardjo, Suryadi |
author_facet |
Shamsul Shaari, Jesni Soekardjo, Suryadi |
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Shamsul Shaari, Jesni |
title |
Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment |
title_short |
Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment |
title_full |
Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment |
title_fullStr |
Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment |
title_full_unstemmed |
Indistinguishable encoding for bidirectional quantum key distribution: Theory to experiment |
title_sort |
indistinguishable encoding for bidirectional quantum key distribution: theory to experiment |
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IOP Publishing |
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2017 |
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http://irep.iium.edu.my/62745/8/62745%20Indistinguishable%20encoding%20for%20bidirectional%20quantum.pdf http://irep.iium.edu.my/62745/7/62745%20Indistinguishable%20encoding%20SCOPUS.pdf http://irep.iium.edu.my/62745/ http://iopscience.iop.org/article/10.1209/0295-5075/120/60001/pdf |
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