2010/09/06 by A. Kowalewska-Kudłaszyk, A Kowalewska-Kudłaszyk, W. Leoński +1
Computer Science · Physics and Astronomy · #Excited state #Field (mathematics) #Negativity effect #Nonlinear system #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #State (computer science) #Vacuum state #physics.optics #quant-ph
paper · pdf · doi:10.1088/0953-4075/43/20/205503
published as J. Phys. B: At. Mol. Opt. Phys. 43 (2010) 205503 · Accepted for publication in J. Phys.B
arxiv created 2010/09/06 · openalex publication_date 2010/10/04 · arxiv updated 2015/05/19 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
We discuss the coupler system of two nonlinear oscillators excited by an external coherent field prepared in a maximally entangled state (Bell-like state). We show that as a result of the coupler interaction of the system with external broadband squeezed vacuum bath, entanglement decay dynamics can be considerably affected. Besides the phenomena of sudden entanglement death and its rebirth, a shortening (or lengthening) of the total disentanglement time τD can be observed, depending on the squeezing parameters. Moreover, on the example of one of the reborn entanglement cases it is shown that by changing the values of these parameters the maximal values of the negativity for the 3 ⊗ 2 system discussed can be tailored.