Linear amplification and quantum cloning for non-Gaussian continuous variables
arXiv:1009.2306 · doi:10.1088/1367-2630/12/10/103010
Abstract
We investigate phase-insensitive linear amplification at the quantum limit for single- and two-mode states and show that there exists a broad class of non-Gaussian states whose nonclassicality survives even at an arbitrarily large gain. We identify the corresponding observable nonclassical effects and find that they include, remarkably, two-mode entanglement. The implications of our results for quantum cloning outside the Gaussian regime are also addressed.
published version with reference update
References in corpus (7)
- Finite-Time Disentanglement via Spontaneous Emission
- A computable measure of nonclassicality for light
- The optimal cloning of quantum coherent states is non-Gaussian
- Experimental determination of a nonclassical Glauber-Sudarshan P function
- Universal optical amplification without nonlinearity
- Uncertainty inequalities as entanglement criteria for negative partial-transpose states
- Squeezing the limit: Quantum benchmarks for the teleportation and storage of squeezed states