Purification of Gaussian maximally mixed states
arXiv:1605.00869 · doi:10.1016/j.physleta.2016.09.001
Abstract
We find that the purifications of several Gaussian maximally mixed states (GMMSs) correspond to some Gaussian maximally entangled states (GMESs) in the continuous-variable regime. Here, we consider a two-mode squeezed vacuum (TMSV) state as a purification of the thermal state and construct a general formalism of the Gaussian purification process. Moreover, we introduce other kind of GMESs via the process. All of our purified states of the GMMSs exhibit Gaussian profiles; thus, the states show maximal quantum entanglement in the Gaussian regime.
6 pages, 2 figures; Close to published version
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Cited by in corpus (5)
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- Upper bounds on the private capacity for bosonic Gaussian channels
- Universal upper bounds for Gaussian information capacity
- Correspondence between maximally entangled states in discrete and Gaussian regimes
- Approximate private quantum channels on fermionic Gaussian systems