Coherent Spin Manipulation in an Exchange-Only Qubit
| Title: | Coherent Spin Manipulation in an Exchange-Only Qubit |
| Author: |
Laird, Edward A.; Taylor, Jacob Mason; Di Vincenzo, David P.; Marcus, Charles Masamed; Hanson, Micah P.; Gossard, Arthur C.
Note: Order does not necessarily reflect citation order of authors. |
| Citation: | Laird, Edward A., Jacob M. Taylor, David P. Di Vincenzo, Charles M. Marcus, Micah P. Hanson, and Arthur C. Gossard. 2011. Coherent spin manipulation in an exchange-only qubit. Physical Review B, Condensed Matter and Materials Physics 82(7): 075403. |
| Full Text & Related Files: |
Laird_CoherentSpin.pdf (3.444Mb; PDF) 
|
| Abstract: | Initialization, two-spin coherent manipulation, and readout of a three-spin qubit are demonstrated using a few-electron triple quantum dot. The three-spin qubit is designed to allow all operations for full qubit control to be tuned via nearest-neighbor exchange interaction. Fast readout of charge states takes advantage of multiplexed reflectometry. Decoherence measured in a two-spin subspace is found to be consistent with predictions based on gate voltage noise with a uniform power spectrum. The theory of the exchange-only qubit is developed and it is shown that initialization of only two spins suffices for operation. Requirements for full multiqubit control using only exchange and electrostatic interactions are outlined. |
| Published Version: | doi:10.1103/PhysRevB.82.075403 |
| Other Sources: |
http://marcus.physics.harvard.edu/papers/Laird_Exchonly_PRB2010.pdf
http://homepage.tudelft.nl/76b6t/research/Papers/LairdTriplePRB.pdf http://arxiv.org/abs/1005.0273 |
| Terms of Use: | This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP |
| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:5139193 |
This item appears in the following Collection(s)
-
FAS Scholarly Articles [5133]
Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
Contact administrator regarding this item (to report mistakes or request changes)
