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Article: Tunable charge qubit based on barrier-controlled triple quantum dots
Title | Tunable charge qubit based on barrier-controlled triple quantum dots |
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Authors | |
Issue Date | 2018 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/pra/ |
Citation | Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2018, v. 98 n. 3, article no. 032334 How to Cite? |
Abstract | We present a theoretical proposal of a tunable charge qubit, hosted in triple quantum dots. The manipulation is solely performed by changing the heights of the two potential barriers between the three dots, while the energies of all three dots are fixed. We have found that when the relative heights of the two barriers are changed, the direction of the axis of rotation in performing single-qubit gates can be varied. On the other hand, the corresponding rotation speed can be tuned by raising or lowering the two barriers at the same time. Our proposal therefore allows for tunability of both the rotation axis and rotating speed for a charge qubit via all-electrical control, which may facilitate realization of quantum algorithms in these devices. © 2018 American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/264275 |
ISSN | 2023 Impact Factor: 2.6 2023 SCImago Journal Rankings: 1.081 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Yang, X | - |
dc.contributor.author | Chan, GX | - |
dc.contributor.author | Wang, X | - |
dc.date.accessioned | 2018-10-22T07:52:19Z | - |
dc.date.available | 2018-10-22T07:52:19Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2018, v. 98 n. 3, article no. 032334 | - |
dc.identifier.issn | 2469-9926 | - |
dc.identifier.uri | http://hdl.handle.net/10722/264275 | - |
dc.description.abstract | We present a theoretical proposal of a tunable charge qubit, hosted in triple quantum dots. The manipulation is solely performed by changing the heights of the two potential barriers between the three dots, while the energies of all three dots are fixed. We have found that when the relative heights of the two barriers are changed, the direction of the axis of rotation in performing single-qubit gates can be varied. On the other hand, the corresponding rotation speed can be tuned by raising or lowering the two barriers at the same time. Our proposal therefore allows for tunability of both the rotation axis and rotating speed for a charge qubit via all-electrical control, which may facilitate realization of quantum algorithms in these devices. © 2018 American Physical Society. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/pra/ | - |
dc.relation.ispartof | Physical Review A: covering atomic, molecular, and optical physics and quantum information | - |
dc.rights | Copyright 2018 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevA.98.032334 | - |
dc.title | Tunable charge qubit based on barrier-controlled triple quantum dots | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevA.98.032334 | - |
dc.identifier.scopus | eid_2-s2.0-85054471625 | - |
dc.identifier.hkuros | 295770 | - |
dc.identifier.volume | 98 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | article no. 032334 | - |
dc.identifier.epage | article no. 032334 | - |
dc.identifier.isi | WOS:000446163200007 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2469-9926 | - |