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Coherent superpositions of three states for phosphorous donors in silicon prepared using THz radiation

Chick, Steven, Stavrias, N., Saeedi, K., Redlich, B., Greenland, P. T., Matmon, G., Naftaly, M., Pidgeon, C. R., Aeppli, G. and Murdin, Benedict (2017) Coherent superpositions of three states for phosphorous donors in silicon prepared using THz radiation Nature Communications, 8, 16038.

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Abstract

Superposition of orbital eigenstates is crucial to quantum technology utilising atoms, such as atomic clocks and quantum computers, and control over the interaction between atoms and their neighbours is an essential ingredient for both gating and readout. The simplest coherent wavefunction control uses a 2-eigenstate admixture, but more control over the spatial distribution of the wavefunction can be obained by increasing the number of states in the wavepacket. Here we demonstrate THz laser pulse control of Si:P orbitals using multiple orbital state admixtures, observing beat patterns produced by Zeeman splitting. The beats are an observable signature of the ability to control the path of the electron, which implies we can now control the strength and duration of the interaction of the atom with different neighbours. This could simplify surface code networks which require spatially controlled interaction between atoms, and we propose an architecture that might take advantage of this.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Chick, Stevens.chick@surrey.ac.ukUNSPECIFIED
Stavrias, N.UNSPECIFIEDUNSPECIFIED
Saeedi, K.UNSPECIFIEDUNSPECIFIED
Redlich, B.UNSPECIFIEDUNSPECIFIED
Greenland, P. T.UNSPECIFIEDUNSPECIFIED
Matmon, G.UNSPECIFIEDUNSPECIFIED
Naftaly, M.UNSPECIFIEDUNSPECIFIED
Pidgeon, C. R.UNSPECIFIEDUNSPECIFIED
Aeppli, G.UNSPECIFIEDUNSPECIFIED
Murdin, BenedictB.Murdin@surrey.ac.ukUNSPECIFIED
Date : 24 July 2017
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Identification Number : 10.1038/ncomms16038
Copyright Disclaimer : Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Depositing User : Clive Harris
Date Deposited : 06 Jun 2017 15:23
Last Modified : 16 Aug 2017 12:53
URI: http://epubs.surrey.ac.uk/id/eprint/841317

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