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Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots
Abstract
We demonstrated coherent control of a quantum two-level system based on two-electron spin states in a double quantum dot, allowing state preparation, coherent manipulation, and projective readout. These techniques are based on rapid electrical control of the exchange interaction. Separating and later recombining a singlet spin state provided a measurement of the spin dephasing time, T 2 *, of ∼10 nanoseconds, limited by hyperfine interactions with the gallium arsenide host nuclei. Rabi oscillations of two-electron spin states were demonstrated, and spin-echo pulse sequences were used to suppress hyperfine-induced dephasing. Using these quantum control techniques, a coherence time for two-electron spin states exceeding 1 microsecond was observed.
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Cites
Quantum computation with quantum dots
Loss, D., & DiVincenzo, D. P. (1998) · Physical Review A · doi:10.1103/physreva.57.120 · Cited by 6,840
Quantum Mechanics Helps in Searching for a Needle in a Haystack
Grover, L. K. (1997) · Physical Review Letters · doi:10.1103/physrevlett.79.325 · Cited by 4,306
Cited by
Ladd, T. D., Jelezko, F., Laflamme, R., Nakamura, Y., Monroe, C., & O’Brien, J. L. (2010) · Nature · doi:10.1038/nature08812 · Cited by 3,592
Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems
Xiang, Z.-L., Ashhab, S., You, J. Q., & Nori, F. (2013) · Reviews of Modern Physics · doi:10.1103/revmodphys.85.623 · Cited by 1,514
Quantum register based on individual electronic and nuclear spin qubits in diamond
Dutt, M. V. G., Childress, L., Jiang, L., Togan, E., Maze, J., Jelezko, F., Zibrov, A. S., Hemmer, P. R., & Lukin, M. D. (2007) · Science · doi:10.1126/science.1139831 · Cited by 1,287
Self-citationQuantum computing with trapped ions
HAFFNER, H., ROOS, C., & BLATT, R. (2008) · Physics Reports · doi:10.1016/j.physrep.2008.09.003 · Cited by 1,154
An addressable quantum dot qubit with fault-tolerant control-fidelity
Veldhorst, M., Hwang, J. C. C., Yang, C. H., Leenstra, A. W., de Ronde, B., Dehollain, J. P., Muhonen, J. T., Hudson, F. E., Itoh, K. M., Morello, A., et al. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.216 · Cited by 940
Metadata
- Authors
- Petta, J. R., Johnson, A. C., Taylor, J. M., Laird, E. A., Yacoby, A., Lukin, M. D., Marcus, C. M., Hanson, M. P., & Gossard, A. C.
- Venue
- Science
- Published
- 2005-09-30
- Volume
- 309
- Issue
- 5744
- Pages
- 2180-2184
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2087965200
- Cited by
- 3,183
- References
- 2
- FWCI
- 114.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots. https://app.cochat.ai/papers/10.1126/science.1116955
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- Petta, J. R., Johnson, A. C., Taylor, J. M., Laird, E. A., Yacoby, A., Lukin, M. D., Marcus, C. M., Hanson, M. P., & Gossard, A. C. (2005). Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots. Science. https://doi.org/10.1126/science.1116955
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