2008/03/31 by Dong-Lin Zhou, Zhou Dong-Lin, Le-Man Kuang +1
Computer Science · Physics and Astronomy · #Cluster state #Coherent states #Excited state #Mechanical and Optical Resonators #Multipartite entanglement #Photon #Photon entanglement #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum electrodynamics #Quantum entanglement #Quantum mechanics #Squashed entanglement #W state #quant-ph
paper · pdf · doi:10.1088/1674-1056/18/4/006
5 pages, no figure. v2: Revised version with corrections in equations and discussions
openalex publication_date 2009/03/17 · arxiv created 2009/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
This paper introduces two types of two-mode excited entangled coherent states (TMEECSs) |Ψ±(α, m , n )⟩, studies their entanglement characteristics, and investigates the influence of photon excitations on quantum entanglement. It shows that for the state |Ψ+(α, m , m )⟩ the two-mode photon excitations affect seriously entanglement character while the state |Ψ-(α, m , m )⟩ is always a maximally entangled state, and shows how such states can be produced by using cavity quantum electrodynamics and quantum measurements. It finds that the entanglement amount of the TMEECSs is larger than that of the single-mode excited entangled coherent states with the same photon excitation number.