Nonlinear entanglement and its application to generating cat States
The Einstein-Podolsky-Rosen (EPR) paradox, which was formulated to argue for the incompleteness of quantum mechanics, has since metamorphosed into a resource for quantum information. The EPR entanglement describes the strength of linear correlations between two objects in terms of a pair of conjugat...
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| Veröffentlicht in: | Physical review letters 2015-03, Vol.114 (10), p.100403-100403, Article 100403 |
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| container_title | Physical review letters |
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| creator | Shen, Y Assad, S M Grosse, N B Li, X Y Reid, M D Lam, P K |
| description | The Einstein-Podolsky-Rosen (EPR) paradox, which was formulated to argue for the incompleteness of quantum mechanics, has since metamorphosed into a resource for quantum information. The EPR entanglement describes the strength of linear correlations between two objects in terms of a pair of conjugate observables in relation to the Heisenberg uncertainty limit. We propose that entanglement can be extended to include nonlinear correlations. We examine two driven harmonic oscillators that are coupled via third-order nonlinearity can exhibit quadraticlike nonlinear entanglement which, after a projective measurement on one of the oscillators, collapses the other into a cat state of tunable size. |
| doi_str_mv | 10.1103/PhysRevLett.114.100403 |
| format | Article |
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| ispartof | Physical review letters, 2015-03, Vol.114 (10), p.100403-100403, Article 100403 |
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| language | eng |
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| source | American Physical Society |
| subjects | Conjugates Correlation Entanglement Joining Nonlinearity Oscillators Quantum mechanics Uncertainty |
| title | Nonlinear entanglement and its application to generating cat States |
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