MLC No-go Theorems: Reinterpretation and Extension
| dc.creator | Dang, Minh-Dung | |
| dc.creator | Bellot, Patrick | |
| dc.date | 2007-01-22 | |
| dc.date | 2008-03-21 | |
| dc.date.accessioned | 2026-07-07T09:27:43Z | |
| dc.date.available | 2026-07-07T09:27:43Z | |
| dc.description | In this article, we are interested in the physical model of general quantum protocols implementing secure two-party computations in the light of Mayers' and Lo's & Chau's no-go theorems of bit commitment and oblivious transfer. In contrast to the commonly adobted quantum pure two-party model in the literature where classical communication is normally ignored, we propose an alternative interpretation for the purification of classical communication in two-party protocols by introducing a quantum third party for the classical channel. This interpretation leads to a global three-party model, involving Alice's and Bob's machines and the environment coupled to the macroscopic channel, using the decoherence scheme in quantum measurements. This model could give a more general view on the concealing/binding trade-off of quantum bit commitment protocols. Inspired from this three-party interpretation, we extend the no-go theorems for denying some classes of two-party protocols having access to some particular quantum trusted third-parties, known as quantum two-party oracles. The extension implies that a quantum protocol for implementing secure two-party computations musts have access to a trusted third-party which erases information and thus makes dissipation of heat to the environment. | |
| dc.description | 25 pages, revtex4 (prb, onecollumn), co-author added | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0701156 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0701156 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/157206 | |
| dc.subject | Quantum Physics | |
| dc.title | MLC No-go Theorems: Reinterpretation and Extension | |
| dc.type | text |