Jong et al. - Proceedings of the 2008 International Conference on Nanoscience and Nanotechnology, ICONN 2008 - 2008 - Coherent tunneling.pdf (622.89 kB)
Coherent tunneling adiabatic passage with the alternating coupling scheme
journal contributionposted on 2023-05-18, 12:37 authored by Lenneke JongLenneke Jong, Greentree, AD, Conrad, VI, Hollenberg, LCL, Jamieson, DN
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.
Department/SchoolInstitute for Marine and Antarctic Studies
PublisherIop Publishing Ltd
Place of publicationDirac House, Temple Back, Bristol, England, Bs1 6Be
Rights statementCopyright 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.