Gaussian state entanglement witnessing through lossy compression
| Autor: | Klobus, Waldemar, Cieslinski, Pawel, Knips, Lukas, Kurzynski, Pawel, Laskowski, Wieslaw |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 103, 032412 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.103.032412 |
| Popis: | We propose a method to witness entanglement between two continuous-variable systems in a Gaussian state. Its key ingredient is a local lossy state transfer from the original spatially separated systems onto two spatially separated qubits. The qubits are initially in a pure product state, therefore by detecting entanglement between the qubits we witness entanglement between the two original systems. This method greatly simplifies entanglement witnessing in complex systems. Comment: 5 pages, 2 figures |
| Databáze: | arXiv |
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