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Coherent tunneling adiabatic passage with the alternating coupling scheme


Jong, LM and Greentree, AD and Conrad, VI and Hollenberg, LCL and Jamieson, DN, Coherent tunneling adiabatic passage with the alternating coupling scheme, Nanotechnology, 20, (40) pp. 1-8. ISSN 0957-4484 (2009) [Refereed Article]

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Copyright Statement

Copyright 2009 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication/published in Nanotechnology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it.

DOI: doi:10.1088/0957-4484/20/40/405402


The use of adiabatic passage techniques to mediate particle transport through real space, rather than phase space, is becoming an interesting possibility. We have investigated the properties of Coherent Tunneling Adiabatic Passage (CTAP) with alternating tunneling matrix elements. This coupling scheme, not previously considered in the donor in silicon paradigm, provides an interesting route to long-range quantum transport. We introduce simplified coupling protocols and transient eigenspectra as well as a realistic gate design for this transport protocol. Using a pairwise treatment of the tunnel couplings for a 5 donor device with 30 nm donor spacings, 120nm total chain length, we estimate the time scale required for adiabatic operation to be ~70 ns, a time well within measured electron spin and estimated charge relaxation times for phosphorus donors in silicon.

Item Details

Item Type:Refereed Article
Keywords:adiabatic passage; quantum dots; quantum computation
Research Division:Physical Sciences
Research Group:Quantum physics
Research Field:Quantum information, computation and communication
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Jong, LM (Dr Lenneke Jong)
ID Code:102641
Year Published:2009
Web of Science® Times Cited:27
Deposited By:IMAS Research and Education Centre
Deposited On:2015-09-01
Last Modified:2022-09-02
Downloads:420 View Download Statistics

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