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Coherent tunneling adiabatic passage with the alternating coupling scheme
Citation
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
Abstract
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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