Bell's inequality violation with spins in silicon.

Dehollain, JP; Simmons, S; Muhonen, JT; Kalra, R; Laucht, A; Hudson, F; Itoh, KM; Jamieson, DN; McCallum, JC; Dzurak, AS; Morello, A

Bell's inequality violation with spins in silicon.

Dehollain, JP Simmons, S Muhonen, JT Kalra, R Laucht, A Hudson, F Itoh, KM Jamieson, DN McCallum, JC Dzurak, AS Morello, A

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Publisher:: NATURE PUBLISHING GROUP
Publication Type:: Journal Article
Citation:: Nat Nanotechnol, 2016, 11, (3), pp. 242-246
Issue Date:: 2016-03

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Field	Value	Language
dc.contributor.author	Dehollain, JP
dc.contributor.author	Simmons, S
dc.contributor.author	Muhonen, JT
dc.contributor.author	Kalra, R
dc.contributor.author	Laucht, A
dc.contributor.author	Hudson, F
dc.contributor.author	Itoh, KM
dc.contributor.author	Jamieson, DN
dc.contributor.author	McCallum, JC
dc.contributor.author	Dzurak, AS
dc.contributor.author	Morello, A
dc.date.accessioned	2022-08-10T22:47:33Z
dc.date.available	2015-10-07
dc.date.available	2022-08-10T22:47:33Z
dc.date.issued	2016-03
dc.identifier.citation	Nat Nanotechnol, 2016, 11, (3), pp. 242-246
dc.identifier.issn	1748-3387
dc.identifier.issn	1748-3395
dc.identifier.uri	http://hdl.handle.net/10453/159865
dc.description.abstract	Bell's theorem proves the existence of entangled quantum states with no classical counterpart. An experimental violation of Bell's inequality demands simultaneously high fidelities in the preparation, manipulation and measurement of multipartite quantum entangled states, and provides a single-number benchmark for the performance of devices that use such states for quantum computing. We demonstrate a Bell/ Clauser-Horne-Shimony-Holt inequality violation with Bell signals up to 2.70(9), using the electron and the nuclear spins of a single phosphorus atom embedded in a silicon nanoelectronic device. Two-qubit state tomography reveals that our prepared states match the target maximally entangled Bell states with >96% fidelity. These experiments demonstrate complete control of the two-qubit Hilbert space of a phosphorus atom and highlight the important function of the nuclear qubit to expand the computational basis and maximize the readout fidelity.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	NATURE PUBLISHING GROUP
dc.relation.ispartof	Nat Nanotechnol
dc.relation.isbasedon	10.1038/nnano.2015.262
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Bell's inequality violation with spins in silicon.
dc.type	Journal Article
utslib.citation.volume	11
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - QSI - Centre for Quantum Software and Information
utslib.copyright.status	closed_access	*
dc.date.updated	2022-08-10T22:47:31Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	3

Abstract:

Bell's theorem proves the existence of entangled quantum states with no classical counterpart. An experimental violation of Bell's inequality demands simultaneously high fidelities in the preparation, manipulation and measurement of multipartite quantum entangled states, and provides a single-number benchmark for the performance of devices that use such states for quantum computing. We demonstrate a Bell/ Clauser-Horne-Shimony-Holt inequality violation with Bell signals up to 2.70(9), using the electron and the nuclear spins of a single phosphorus atom embedded in a silicon nanoelectronic device. Two-qubit state tomography reveals that our prepared states match the target maximally entangled Bell states with >96% fidelity. These experiments demonstrate complete control of the two-qubit Hilbert space of a phosphorus atom and highlight the important function of the nuclear qubit to expand the computational basis and maximize the readout fidelity.

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http://hdl.handle.net/10453/159865