Entanglement-enhanced time-continuous quantum control in optomechanics
| Autor: | Hofer, Sebastian G., Hammerer, Klemens |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 91, 033822 (2015) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.91.033822 |
| Popis: | The cavity-optomechanical radiation pressure interaction provides the means to create entanglement between a mechanical oscillator and an electromagnetic field interacting with it. Here we show how we can utilize this entanglement within the framework of time-continuous quantum control, in order to engineer the quantum state of the mechanical system. Specifically, we analyze how to prepare a low-entropy mechanical state by (measurement-based) feedback cooling operated in the blue detuned regime, the creation of bipartite mechanical entanglement via time-continuous entanglement swapping, and preparation of a squeezed mechanical state by time-continuous teleportation. The protocols presented here are feasible in optomechanical systems exhibiting a cooperativity larger than 1. Comment: 18 pages, 12 figures |
| Databáze: | arXiv |
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