Path entanglement of continuous-variable quantum microwaves
| Autor: | Edwin P. Menzel, Achim Marx, M. Haeberlein, Enrique Solano, P. Eder, E. Hoffmann, Tsuyoshi Yamamoto, L. Zhong, Frank Deppe, A. Baust, Kunihiro Inomata, Rudolf Gross, Yasunobu Nakamura, D. Ballester, R. Di Candia, M. Ihmig |
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| Rok vydání: | 2012 |
| Předmět: |
General Physics and Astronomy
FOS: Physical sciences 02 engineering and technology Quantum channel Quantum entanglement Quantum imaging 01 natural sciences Superconductivity (cond-mat.supr-con) Quantum mechanics 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Quantum metrology 010306 general physics Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity Quantum sensor 021001 nanoscience & nanotechnology 3. Good health Quantum technology Quantum radar 0210 nano-technology Quantum Physics (quant-ph) Quantum teleportation |
| Zdroj: | Physical Review Letters |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/PhysRevLett.109.250502 |
| Popis: | Path entanglement constitutes an essential resource in quantum information and communication protocols. Here, we demonstrate frequency-degenerate entanglement between continuous-variable quantum microwaves propagating along two spatially separated paths. We combine a squeezed and a vacuum state using a microwave beam splitter. Via correlation measurements, we detect and quantify the path entanglement contained in the beam splitter output state. Our experiments open the avenue to quantum teleportation, quantum communication, or quantum radar with continuous variables at microwave frequencies. Comment: 16 pages, 14 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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