Disentangled Quantum Operation on Majorana Qubits in Qubit Chains

Autor:	Yu. Makhlin, Alexander Shnirman, Stefan Backens
Rok vydání:	2019
Předmět:	Physics Symmetry operation Spins General Physics and Astronomy Quantum Physics 01 natural sciences MAJORANA Computer Science::Emerging Technologies Quantum mechanics Logic gate Qubit 0103 physical sciences Quantum operation Hardware_ARITHMETICANDLOGICSTRUCTURES 010306 general physics Quantum Spin-½
Zdroj:	Journal of Experimental and Theoretical Physics. 129:733-737
ISSN:	1090-6509 1063-7761
DOI:	10.1134/s1063776119100212
Popis:	We consider quantum logical gates on Majorana qubits implemented in chain structures of ordinary qubits, spins, or pseudospins. We demonstrate that one can implement a two-qubit operation via local manipulations, using an extra coupler spin in a T-junction geometry, so that this coupler spin remains disentangled from the qubit. Furthermore, we identify a set of symmetry operations, which not only allow us to determine the resulting two-qubit gate, but also to demonstrate robustness of the resulting gate to inaccuracies in the manipulations, known for topological quantum computation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5722cd0f672d6d5dcd361d14e4a7e00a https://doi.org/10.1134/s1063776119100212 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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