2006/11/28 by Jun Jing, Jing Jun, Hongru Ma +1 · 5 citations
Chemistry · Computer Science · Physics and Astronomy · #Antiferromagnetism #Chemistry #Concurrence #Condensed matter physics #Coupling (piping) #Hamiltonian (control theory) #Materials science #Physics #Polarization (electrochemistry) #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum decoherence #Quantum entanglement #Quantum mechanics #Spectroscopy and Quantum Chemical Studies #Spins #Thermal #Thermal equilibrium #Thermodynamics #quant-ph
paper · pdf · doi:10.1088/1009-1963/16/6/001
published in Chinese Physics 16(6), 1489-1504 (IOP Publishing) · 32 pages, Chinese Physics (accepted)
arxiv created 2006/11/28 · openalex publication_date 2007/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The dynamics of two coupled spins-½ coupled to a spin-bath is studied as an extended model of the Tessieri–Wilkie Hamiltonian. The pair of spins served as an open subsystem is prepared in one of the Bell states and the bath consisting of some spins-½ is in a thermal equilibrium state from the very beginning. It is found that with increasing coupling strength of the bath spins, the bath forms a resonant antiferromagnetic order. The polarization correlation between the two spins of the subsystem and the concurrence of it are recovered to some extent in the isolated subsystem. This suppression of the subsystem decoherence may be used to control the quantum devices in practical applications.