2000/05/31 by M. S. Kim, Jinhyoung Lee · 19 citations
Computer Science · Mathematics · Physics and Astronomy · #Amplitude damping channel #Channel (broadcasting) #Computer science #Imperfect #Law #Mathematics #No-teleportation theorem #Physics #Political science #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum information #Quantum mechanics #Quantum network #Quantum teleportation #Superdense coding #Telecommunications #Teleportation #Topology (electrical circuits) #Unitary state #Unitary transformation #quant-ph
paper · pdf · doi:10.1103/physreva.64.012309
published in Physical Review A 64(1) (American Physical Society) · 4pages, 1figure
arxiv created 2000/12/20 · openalex publication_date 2001/06/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose an optimal strategy for continuous-variable teleportation in a realistic situation. We show that the typical imperfect quantum operation can be described as a combination of an asymmetrically decohered quantum channel and perfect apparatuses for other operations. For the asymmetrically decohered quantum channel, we find some counterintuitive results: teleportation does not necessarily get better as the channel is initially squeezed more. We show that decoherence-assisted measurement and transformation may enhance fidelity for an asymmetrically mixed quantum channel.