2007/06/25 by Fabio Dell’Anno, F. Dell'Anno, Silvio De Siena +5 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Bell state #Coherent states #Computer science #Continuous variable #Gaussian #Mathematical analysis #Mathematics #Mode (computer interface) #Photon #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum entanglement #Quantum mechanics #Quantum teleportation #Squeezed coherent state #Statistical physics #Statistics #Superdense coding #Teleportation #Variable (mathematics) #quant-ph
paper · pdf · doi:10.1103/physreva.76.022301
published as Phys. Rev. A 76, 022301 (2007) · 12 pages, 12 figures
arxiv created 2007/06/25 · openalex publication_date 2007/08/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate continuous variable quantum teleportation using non-Gaussian states of the radiation field as entangled resources. We compare the performance of different classes of degaussified resources, including two-mode photon-added and two-mode photon-subtracted squeezed states. We then introduce a class of two-mode squeezed Bell-like states with one-parameter dependence for optimization. These states interpolate between and include as subcases different classes of degaussified resources. We show that optimized squeezed Bell-like resources yield a remarkable improvement in the fidelity of teleportation both for coherent and nonclassical input states. The investigation reveals that the optimal non-Gaussian resources for continuous variable teleportation are those that most closely realize the simultaneous maximization of the content of entanglement, the degree of affinity with the two-mode squeezed vacuum, and the, suitably measured, amount of non-Gaussianity.