Compare Papers
Paper 1
State Decoding in Multi-Stage Cryptography Protocols
Sindhu Chitikela
- Year
- 2013
- Journal
- arXiv preprint
- DOI
- arXiv:1306.5192
- arXiv
- 1306.5192
This paper presents a practical method of quantum tomography for decoding the state of photons in a multistage cryptography protocol. This method works if the polarization angles are defined on a fixed plane, as is assumed in several quantum cryptography protocols. We show if there are 2m polarization angles in a fixed plane, we need m number of filters and m2 number of photons through each filter.
Open paperPaper 2
Synthesis of Arbitrary Quantum Circuits to Topological Assembly: Systematic, Online and Compact
Alexandru Paler, Austin G. Fowler, Robert Wille
- Year
- 2017
- Journal
- arXiv preprint
- DOI
- arXiv:1711.01387
- arXiv
- 1711.01387
It is challenging to transform an arbitrary quantum circuit into a form protected by surface code quantum error correcting codes (a variant of topological quantum error correction), especially if the goal is to minimise overhead. One of the issues is the efficient placement of magic state distillation sub circuits, so-called distillation boxes, in the space-time volume that abstracts the computation's required resources. This work presents a general, systematic, online method for the synthesis of such circuits. Distillation box placement is controlled by so-called schedulers. The work introduces a greedy scheduler generating compact box placements. The implemented software, whose source code is available online, is used to illustrate and discuss synthesis examples. Synthesis and optimisation improvements are proposed.
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