The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.
A two-qubit logic gate in silicon
Open accessAbstract
Quantum computation requires qubits that can be coupled in a scalable manner, together with universal and high-fidelity one- and two-qubit logic gates. Many physical realizations of qubits exist, including single photons, trapped ions, superconducting circuits, single defects or atoms in diamond and silicon, and semiconductor quantum dots, with single-qubit fidelities that exceed the stringent thresholds required for fault-tolerant quantum computing. Despite this, high-fidelity two-qubit gates in the solid state that can be manufactured using standard lithographic techniques have so far been limited to superconducting qubits, owing to the difficulties of coupling qubits and dephasing in semiconductor systems. Here we present a two-qubit logic gate, which uses single spins in isotopically enriched silicon and is realized by performing single- and two-qubit operations in a quantum dot system using the exchange interaction, as envisaged in the Loss–DiVincenzo proposal. We realize CNOT gates via controlled-phase operations combined with single-qubit operations. Direct gate-voltage control provides single-qubit addressability, together with a switchable exchange interaction that is used in the two-qubit controlled-phase gate. By independently reading out both qubits, we measure clear anticorrelations in the two-spin probabilities of the CNOT gate.
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Citations
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
Surface codes: Towards practical large-scale quantum computation
Fowler, A. G., Mariantoni, M., Martinis, J. M., & Cleland, A. N. (2012) · Physical Review A · doi:10.1103/physreva.86.032324 · Cited by 3,059 · cited 3×
“Strong effort across several fields have led to an impressive array of qubit realizations, including trapped ions [4], superconducting circuits [5], single photons[3], single defects or atoms in diamond [6, 7] and silicon [8], and semiconductor quantum dots [4], all with single qubit fidelities exceeding the stringent…”
BackgroundLinear optical quantum computing with photonic qubits
Kok, P., Munro, W. J., Nemoto, K., Ralph, T. C., Dowling, J. P., & Milburn, G. J. (2007) · Reviews of Modern Physics · doi:10.1103/revmodphys.79.135 · Cited by 2,904
Superconducting quantum circuits at the surface code threshold for fault tolerance
Barends, R., Kelly, J., Megrant, A., Veitia, A., Sank, D., Jeffrey, E., White, T. C., Mutus, J., Fowler, A. G., Campbell, B., et al. (2014) · Nature · doi:10.1038/nature13171 · Cited by 1,733
High-fidelity spin entanglement using optimal control
Dolde, F., Bergholm, V., Wang, Y., Jakobi, I., Naydenov, B., Pezzagna, S., Meijer, J., Jelezko, F., Neumann, P., Schulte-Herbrüggen, T., et al. (2014) · Nature Communications · doi:10.1038/ncomms4371 · Cited by 325
Cited by
High-Fidelity Quantum Logic Gates Using Trapped-Ion Hyperfine Qubits
Ballance, C. J., Harty, T. P., Linke, N. M., Sepiol, M. A., & Lucas, D. M. (2016) · Physical Review Letters · doi:10.1103/physrevlett.117.060504 · Cited by 777
Quantum optimization using variational algorithms on near-term quantum devices
Moll, N., Barkoutsos, P., Bishop, L. S., Chow, J. M., Cross, A., Egger, D. J., Filipp, S., Fuhrer, A., Gambetta, J. M., Ganzhorn, M., et al. (2018) · Quantum Science and Technology · doi:10.1088/2058-9565/aab822 · Cited by 744
A Survey on quantum computing technology
Gyongyosi, L., & Imre, S. (2019) · Computer Science Review · doi:10.1016/j.cosrev.2018.11.002 · Cited by 646
Interfacing spin qubits in quantum dots and donors—hot, dense, and coherent
Vandersypen, L. M. K., Bluhm, H., Clarke, J. S., Dzurak, A. S., Ishihara, R., Morello, A., Reilly, D. J., Schreiber, L. R., & Veldhorst, M. (2017) · npj Quantum Information · doi:10.1038/s41534-017-0038-y · Cited by 624
Self-citationSynthetic three-dimensional atomic structures assembled atom by atom
Barredo, D., Lienhard, V., de Léséleuc, S., Lahaye, T., & Browaeys, A. (2018) · Nature · doi:10.1038/s41586-018-0450-2 · Cited by 562
Metadata
- Authors
- Veldhorst, M., Yang, C. H., Hwang, J. C. C., Huang, W., Dehollain, J. P., Muhonen, J. T., Simmons, S., Laucht, A., Hudson, F. E., Itoh, K. M., Morello, A., & Dzurak, A. S.
- Venue
- Nature
- Published
- 2015-10
- Volume
- 526
- Issue
- 7573
- Pages
- 410-414
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2165294844
- Cited by
- 919
- References
- 5
- FWCI
- 49.08
- Type
- journal article
- Language
- en
- Open access
- green
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- Veldhorst, M., Yang, C. H., Hwang, J. C. C., Huang, W., Dehollain, J. P., Muhonen, J. T., Simmons, S., Laucht, A., Hudson, F. E., Itoh, K. M., Morello, A., & Dzurak, A. S. (2015). A two-qubit logic gate in silicon. Nature. https://doi.org/10.1038/nature15263
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