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An All-Optical Quantum Gate in a Semiconductor Quantum Dot
Abstract
We report coherent optical control of a biexciton (two electron-hole pairs), confined in a single quantum dot, that shows coherent oscillations similar to the excited-state Rabi flopping in an isolated atom. The pulse control of the biexciton dynamics, combined with previouslydemonstrated control of the single-exciton Rabi rotation, serves as the physical basis for a two-bit conditional quantum logic gate. The truth table of the gate shows the features of an all-optical quantum gate with interacting yet distinguishable excitons as qubits. Evaluation of the fidelity yields a value of 0.7 for the gate operation. Such experimental capabilityis essential to a scheme for scalable quantum computation bymeans of the optical control of spin qubits in dots.
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Cites
Quantum Information Processing Using Quantum Dot Spins and Cavity QED
Imamog¯lu, A., Awschalom, D. D., Burkard, G., DiVincenzo, D. P., Loss, D., Sherwin, M., & Small, A. (1999) · Physical Review Letters · doi:10.1103/physrevlett.83.4204 · Cited by 1,995
Cited by
Interfacing single photons and single quantum dots with photonic nanostructures
Lodahl, P., Mahmoodian, S., & Stobbe, S. (2015) · Reviews of Modern Physics · doi:10.1103/revmodphys.87.347 · Cited by 1,465
Room-temperature coherent coupling of single spins in diamond
Gaebel, T., Domhan, M., Popa, I., Wittmann, C., Neumann, P., Jelezko, F., Rabeau, J. R., Stavrias, N., Greentree, A. D., Prawer, S., et al. (2006) · Nature Physics · doi:10.1038/nphys318 · Cited by 586
On the Cyto‐Toxicity Caused by Quantum Dots
Shiohara, A., Hoshino, A., Hanaki, K., Suzuki, K., & Yamamoto, K. (2004) · Microbiology and Immunology · doi:10.1111/j.1348-0421.2004.tb03478.x · Cited by 385
Quantum simulation and computing with Rydberg-interacting qubits
Morgado, M., & Whitlock, S. (2021) · AVS Quantum Science · doi:10.1116/5.0036562 · Cited by 370
Arakawa, Y., & Holmes, M. J. (2020) · Applied Physics Reviews · doi:10.1063/5.0010193 · Cited by 363
Metadata
- Authors
- Li, X., Wu, Y., Steel, D., Gammon, D., Stievater, T. H., Katzer, D. S., Park, D., Piermarocchi, C., & Sham, L. J.
- Venue
- Science
- Published
- 2003-08-08
- Volume
- 301
- Issue
- 5634
- Pages
- 809-811
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1637233379
- Cited by
- 898
- References
- 1
- FWCI
- 41.33
- Type
- journal article
- Language
- en
- Open access
- closed
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- Li, X., Wu, Y., Steel, D., Gammon, D., Stievater, T. H., Katzer, D. S., Park, D., Piermarocchi, C., & Sham, L. J. (2003). An All-Optical Quantum Gate in a Semiconductor Quantum Dot. Science. https://doi.org/10.1126/science.1083800
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