2007/08/31 by Anne E. B. Nielsen, Klaus Mølmer
Computer Science · Mathematics · Physics and Astronomy · #Amplitude #Coherent states #Computer science #Dark state #Fidelity #Field (mathematics) #Light field #Mathematics #Nonclassical light #Optics #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum electrodynamics #Quantum mechanics #Quantum optics #Quantum optics and atomic interactions #Squeezed coherent state #State (computer science) #Superposition principle #Telecommunications #Vacuum state #quant-ph
paper · pdf · doi:10.1103/physreva.76.043840
published as Phys. Rev. A 76, 043840 (2007) · 6 pages, 4 figures, v2: published version
openalex publication_date 2007/10/26 · arxiv created 2014/10/08 · arxiv updated 2014/10/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A quantum superposition of two coherent states of light with small amplitude can be obtained by subtracting a photon from a squeezed vacuum state. In experiments this preparation can be made conditioned on the detection of a photon in the field from a squeezed light source. We propose and analyze an extended measurement strategy which allows generation of high fidelity coherent state superpositions with larger amplitude.