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Theory of electron spin decoherence by interacting nuclear spins in a quantum dot
Open accessAbstract
We present a quantum solution to the electron spin decoherence by a nuclear pair-correlation method for the electron-nuclear spin dynamics under a strong magnetic field and a temperature high for the nuclear spins but low for the electron. The theory incorporates the hyperfine interaction, the intrinsic (both direct and indirect) nuclear interactions, and the extrinsic nuclear coupling mediated by the hyperfine interaction with the single electron in question. The last is shown to be important in free-induction decay (FID) of the single electron spin coherence. The spin-echo eliminates the hyperfine-mediated decoherence but only reduces the decoherence by the intrinsic nuclear interactions. Thus, the decoherence times for single spin FID and ensemble spin-echo are significantly different. The decoherence is explained in terms of quantum entanglement, which involves more than the spectral diffusion.
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Cited by
Spins in few-electron quantum dots
Hanson, R., Kouwenhoven, L. P., Petta, J. R., Tarucha, S., & Vandersypen, L. M. K. (2007) · Reviews of Modern Physics · doi:10.1103/revmodphys.79.1217 · Cited by 2,665
Coherent control of single spins in silicon carbide at room temperature
Widmann, M., Lee, S.-Y., Rendler, T., Son, N. T., Fedder, H., Paik, S., Yang, L.-P., Zhao, N., Yang, S., Booker, I., et al. (2015) · Nature Materials · doi:10.1038/nmat4145 · Cited by 668
Dephasing time of GaAs electron-spin qubits coupled to a nuclear bath exceeding 200 μs
Bluhm, H., Foletti, S., Neder, I., Rudner, M., Mahalu, D., Umansky, V., & Yacoby, A. (2011) · Nature Physics · doi:10.1038/nphys1856 · Cited by 583
Universal quantum control of two-electron spin quantum bits using dynamic nuclear polarization
Foletti, S., Bluhm, H., Mahalu, D., Umansky, V., & Yacoby, A. (2009) · Nature Physics · doi:10.1038/nphys1424 · Cited by 403
Preserving electron spin coherence in solids by optimal dynamical decoupling
Du, J., Rong, X., Zhao, N., Wang, Y., Yang, J., & Liu, R. B. (2009) · Nature · doi:10.1038/nature08470 · Cited by 400
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Metadata
- Authors
- Yao, W., Liu, R.-B., & Sham, L. J.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2006-11-01
- Volume
- 74
- Issue
- 19
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2012067928
- Cited by
- 309
- References
- 0
- FWCI
- 12.67
- Type
- journal article
- Language
- en
- Open access
- green
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- Yao, W., Liu, R.-B., & Sham, L. J. (2006). Theory of electron spin decoherence by interacting nuclear spins in a quantum dot. Physical Review B. https://doi.org/10.1103/physrevb.74.195301
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