Highly efficient and long-lived optical quantum memory with cold atoms
| Autor: | Nicholas Robins, Geoff Campbell, Daniel B. Higginbottom, Young Wook Cho, Jesse L. Everett, Julian Bernu, Benjamin Buchler, Ping Koy Lam, Jiao Geng, Mingtao Cao |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Quantum network Hardware_MEMORYSTRUCTURES business.industry 010401 analytical chemistry Quantum sensor 020206 networking & telecommunications 02 engineering and technology Quantum channel Quantum imaging 01 natural sciences 0104 chemical sciences Quantum technology Quantum error correction ComputerSystemsOrganization_MISCELLANEOUS Quantum mechanics 0202 electrical engineering electronic engineering information engineering Optoelectronics business Quantum information science Quantum computer |
| Zdroj: | Conference on Lasers and Electro-Optics. |
| DOI: | 10.1364/cleo_qels.2017.fm2e.4 |
| Popis: | Quantum memory is an essential element for long distance quantum communication and photonics quantum computation protocols. The practical implementation of such protocols requires an efficient quantum memory with long coherence time. Here, we report a highly efficient coherent optical memory via the gradient echo memory (GEM) technique in cold atoms. The efficiency is as high as 87% with the e−1 coherence time of 1 ms. The ability of quantum storage is verified using heterodyne tomography of small coherent states, showing that our system performs in the quantum regime. |
| Databáze: | OpenAIRE |
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