Compare Papers
Paper 1
Quantum election scheme based on anonymous quantum key distribution
Rui-Rui Zhou, Li Yang
- Year
- 2011
- Journal
- arXiv preprint
- DOI
- arXiv:1112.1212
- arXiv
- 1112.1212
An unconditionally secure authority-certified anonymous quantum key distribution scheme using conjugate coding is presented, base on which we construct a quantum election scheme without the help of entanglement state. We show that this election scheme ensures the completeness, soundness, privacy, eligibility, unreusability, fairness and verifiability of a large-scale election in which the administrator and counter are semi-honest. This election scheme can work even if there exist loss and errors in quantum channels. In addition, any irregularity in this scheme is sensible.
Open paperPaper 2
Entanglement at the interplay between single- and many-bodyness
Jose Reslen
- Year
- 2022
- Journal
- arXiv preprint
- DOI
- arXiv:2209.04287
- arXiv
- 2209.04287
The tensor network representation of the ground state of a Bethe chain is analytically obtained and studied in relation to its entanglement distribution. Block entanglement displays a maximum at the interplay between single- and many-bodyness. In systems of two fermions, tensor networks describing ground states of interacting Hamiltonians cannot be written as a sequence of next-neighbor unitaries applied on an uncorrelated state, but need four-next-neighbor unitaries in addition. This differs from the idea that the ground state can be obtained as a sequence of next-neighbor operations applied on a tensor network. The work uncovers the transcendence of the notion of many-bodyness in the implementation of protocols based on matrix product states.
Open paper