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dc.contributor.author	Hu, Yongjie
dc.contributor.author	Kuemmeth, Ferdinand
dc.contributor.author	Lieber, Charles M.
dc.contributor.author	Marcus, Charles Masamed
dc.date.accessioned	2012-06-04T14:57:14Z
dc.date.issued	2012
dc.identifier.citation	Hu, Yongjie, Ferdinand Kuemmeth, Charles M. Lieber, and Charles M. Marcus. 2012. Hole spin relaxation in Ge-Si core-shell nanowire qubits. Nature Nanotechnology 7(1): 47-50.	en_US
dc.identifier.issn	1748-3395	en_US
dc.identifier.uri	http://nrs.harvard.edu/urn-3:HUL.InstRepos:8822352
dc.description.abstract	Controlling decoherence is the biggest challenge in efforts to develop quantum information hardware. Single electron spins in gallium arsenide are a leading candidate among implementations of solid-state quantum bits, but their strong coupling to nuclear spins produces high decoherence rates. Group IV semiconductors, on the other hand, have relatively low nuclear spin densities, making them an attractive platform for spin quantum bits. However, device fabrication remains a challenge, particularly with respect to the control of materials and interfaces. Here, we demonstrate state preparation, pulsed gate control and charge-sensing spin readout of hole spins confined in a Ge–Si core–shell nanowire. With fast gating, we measure \(T_1\) spin relaxation times of up to 0.6 ms in coupled quantum dots at zero magnetic field. Relaxation time increases as the magnetic field is reduced, which is consistent with a spin–orbit mechanism that is usually masked by hyperfine contributions.	en_US
dc.description.sponsorship	Chemistry and Chemical Biology	en_US
dc.description.sponsorship	Physics	en_US
dc.language.iso	en_US	en_US
dc.publisher	Nature Publishing Group	en_US
dc.relation.isversionof	doi:10.1038/nnano.2011.234	en_US
dc.relation.hasversion	http://arxiv.org/abs/1110.4742	en_US
dash.license	OAP
dc.subject	electronic properties and devices	en_US
dc.subject	quantum information	en_US
dc.title	Hole Spin Relaxation in Ge-Si Core-Shell Nanowire Qubits	en_US
dc.type	Journal Article	en_US
dc.description.version	Accepted Manuscript	en_US
dc.relation.journal	Nature Nanotechnology	en_US
dash.depositing.author	Lieber, Charles M.
dc.date.available	2012-06-04T14:57:14Z

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  Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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