تقرير
High-Fidelity Polarization Storage in a Gigahertz Bandwidth Quantum Memory
| العنوان: | High-Fidelity Polarization Storage in a Gigahertz Bandwidth Quantum Memory |
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| المؤلفون: | England, D. G., Michelberger, P. S., Champion, T. F. M., Reim, K. F., Lee, K. C., Sprague, M. R., Jin, X. -M., Langford, N. K., Kolthammer, W. S., Nunn, J., Walmsley, I. A. |
| سنة النشر: | 2011 |
| المجموعة: | Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Physics - Atomic Physics |
| الوصف: | We demonstrate a dual-rail optical Raman memory inside a polarization interferometer; this enables us to store polarization-encoded information at GHz bandwidths in a room-temperature atomic ensemble. By performing full process tomography on the system we measure up to 97\pm1% process fidelity for the storage and retrieval process. At longer storage times, the process fidelity remains high, despite a loss of efficiency. The fidelity is 86\pm4% for 1.5 \mu s storage time, which is 5,000 times the pulse duration. Hence high fidelity is combined with a large time-bandwidth product. This high performance, with an experimentally simple setup, demonstrates the suitability of the Raman memory for integration into large-scale quantum networks. Comment: 10 pages, 4 figures. Accepted for publication in Journal of Physics B |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/0953-4075/45/12/124008 |
| URL الوصول: | http://arxiv.org/abs/1112.0900 |
| رقم الأكسشن: | edsarx.1112.0900 |
| قاعدة البيانات: | arXiv |
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