Displacement of propagating squeezed microwave states
| Autor: | Frank Deppe, R. Di Candia, Kunihiro Inomata, Stefan Pogorzalek, U. Las Heras, Michael Fischer, Achim Marx, L. Zhong, Kirill G. Fedorov, Enrique Solano, E. Xie, Jan Goetz, F. Wulschner, Rudolf Gross, Tsuyoshi Yamamoto, Edwin P. Menzel, P. Eder, Mikel Sanz, Yasunobu Nakamura |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Quantum optics
Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Quantum limit Condensed Matter - Superconductivity FOS: Physical sciences General Physics and Astronomy 02 engineering and technology Quantum entanglement 021001 nanoscience & nanotechnology 01 natural sciences Superconductivity (cond-mat.supr-con) Quantum state Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Quantum metrology Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology Quantum information science Quantum teleportation Squeezed coherent state |
| Popis: | Displacement of propagating quantum states of light is a fundamental operation for quantum communication. It enables fundamental studies on macroscopic quantum coherence and plays an important role in quantum teleportation protocols with continuous variables. In our experiments, we have successfully implemented this operation for propagating squeezed microwave states. We demonstrate that, even for strong displacement amplitudes, there is no degradation of the squeezing level in the reconstructed quantum states. Furthermore, we confirm that path entanglement generated by using displaced squeezed states remains constant over a wide range of the displacement power. |
| Databáze: | OpenAIRE |
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