Noise analysis of single-mode Gaussian operations using continuous-variable cluster states

Autor:	Seiji Armstrong, Rafael N. Alexander, Ryuji Ukai, Nicolas C. Menicucci
Rok vydání:	2014
Předmět:	Physics Quantum Physics Quantum network FOS: Physical sciences Quantum capacity Topology Atomic and Molecular Physics and Optics Quantum error correction Quantum process Quantum mechanics Quantum operation Quantum algorithm Quantum information Quantum Physics (quant-ph) Quantum computer
Zdroj:	Physical Review A. 90
ISSN:	1094-1622 1050-2947
DOI:	10.1103/physreva.90.062324
Popis:	We consider measurement-based quantum computation that uses scalable continuous-variable cluster states with a one-dimensional topology. The physical resource, known here as the dual-rail quantum wire, can be generated using temporally multiplexed offline squeezing and linear optics or by using a single optical parametric oscillator. We focus on an important class of quantum gates, specifically Gaussian unitaries that act on single modes, which gives universal quantum computation when supplemented with multi-mode operations and photon-counting measurements. The dual-rail wire supports two routes for applying single-qumode Gaussian unitaries: the first is to use traditional one-dimensional quantum-wire cluster-state measurement protocols. The second takes advantage of the dual-rail quantum wire in order to apply unitaries by measuring pairs of qumodes called macronodes. We analyze and compare these methods in terms of the suitability for implementing single-qumode Gaussian measurement-based quantum computation. Comment: 25 pages, 9 figures, more accessible to general audience
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a73863967c7b47fbac81cbd4aa6b8d6c https://doi.org/10.1103/physreva.90.062324 Zobrazit plný text záznamu