تقرير
Entanglement in a quantum annealing processor
| العنوان: | Entanglement in a quantum annealing processor |
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| المؤلفون: | Lanting, T., Przybysz, A. J., Smirnov, A. Yu., Spedalieri, F. M., Amin, M. H., Berkley, A. J., Harris, R., Altomare, F., Boixo, S., Bunyk, P., Dickson, N., Enderud, C., Hilton, J. P., Hoskinson, E., Johnson, M. W., Ladizinsky, E., Ladizinsky, N., Neufeld, R., Oh, T., Perminov, I., Rich, C., Thom, M. C., Tolkacheva, E., Uchaikin, S., Wilson, A. B., Rose, G. |
| المصدر: | Phys. Rev. X 4, 021041 (2014) |
| سنة النشر: | 2014 |
| المجموعة: | Condensed Matter Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Condensed Matter - Superconductivity |
| الوصف: | Entanglement lies at the core of quantum algorithms designed to solve problems that are intractable by classical approaches. One such algorithm, quantum annealing (QA), provides a promising path to a practical quantum processor. We have built a series of scalable QA processors consisting of networks of manufactured interacting spins (qubits). Here, we use qubit tunneling spectroscopy to measure the energy eigenspectrum of two- and eight-qubit systems within one such processor, demonstrating quantum coherence in these systems. We present experimental evidence that, during a critical portion of QA, the qubits become entangled and that entanglement persists even as these systems reach equilibrium with a thermal environment. Our results provide an encouraging sign that QA is a viable technology for large-scale quantum computing. Comment: 13 pages, 8 figures, contact corresponding author for Supplementary Information |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevX.4.021041 |
| URL الوصول: | http://arxiv.org/abs/1401.3500 |
| رقم الأكسشن: | edsarx.1401.3500 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevX.4.021041 |
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