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Preparing, manipulating, and measuring quantum states on a chip

Abstract:

We use gate voltage control of the exchange interaction to prepare, manipulate, and measure two-electron spin states in a GaAs double quantum dot. By placing two electrons in a single dot at low temperatures we prepare the system in a spin singlet state. The spin singlet is spatially separated by transferring an electron to an adjacent dot. The spatially separated spin singlet state dephases in ∼ 10 ns due to the contact hyperfine interaction with the GaAs host nuclei. To combat the hyperfine...

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Publication status:
Published

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Publisher copy:
10.1016/j.physe.2006.08.020

Authors


Johnson, AC More by this author
Taylor, JM More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
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Journal:
PHYSICA E-LOW-DIMENSIONAL SYSTEMS and NANOSTRUCTURES
Volume:
35
Issue:
2
Pages:
251-256
Publication date:
2006-12-05
DOI:
ISSN:
1386-9477
URN:
uuid:d17844ba-98d2-49f8-8d91-272e36ef269e
Source identifiers:
414495
Local pid:
pubs:414495
Language:
English
Keywords:

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