Relaxation and Dephasing in a Two-Electron \(^{13}C\) Nanotube Double Quantum Dot

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Relaxation and Dephasing in a Two-Electron \(^{13}C\) Nanotube Double Quantum Dot

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Title: Relaxation and Dephasing in a Two-Electron \(^{13}C\) Nanotube Double Quantum Dot
Author: Churchill, Hugh Olen Hill; Kuemmeth, Ferdinand; Harlow, Jennifer W.; Bestwick, Andrew J.; Rashba, Emmanuel; Flensberg, Karsten; Stwertka, Carolyn H.; Taychatanapat, Thiti; Watson, Susan K.; Marcus, Charles Masamed

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Citation: Churchill, Hugh Olen Hill, Ferdinand Kuemmeth, Jennifer W. Harlow, Andrew J. Bestwick, Emmanuel I. Rashba, Karsten Flensberg, Carolyn H. Stwertka, Thiti Taychatanapat, Susan K. Watson, and Charles Masamed Marcus. 2009. Relaxation and dephasing in a two-electron \(^{13}C\) nanotube double quantum dot. Physical Review Letters 102(166802).
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Abstract: We use charge sensing of Pauli blockade (including spin and isospin) in a two-electron \(^{13}C\) nanotube double quantum dot to measure relaxation and dephasing times. The relaxation time \(T_1\) first decreases with a parallel magnetic field and then goes through a minimum in a field of \(1.4 T\). We attribute both results to the spin-orbit-modified electronic spectrum of carbon nanotubes, which at high field enhances relaxation due to bending-mode phonons. The inhomogeneous dephasing time \(T_2^*\) is consistent with previous data on hyperfine coupling strength in \(^{13}C\) nanotubes.
Published Version: doi:10.1103/PhysRevLett.102.166802
Other Sources: http://marcus.physics.harvard.edu/papers/Churchill_PRL_102_166802.pdf
http://arxiv.org/abs/0811.3239v1
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:5110755

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  • FAS Scholarly Articles [7587]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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