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The Properties of Entanglement of the Optical Field Interacting with the Atom under Phase Decoherece Condition in the Multiphoton Process

Author: ZhangDongXia
Tutor: SaChuErFu
School: Inner Mongolia Normal
Course: Optics
Keywords: Quantum Optics Entanglement properties Binomial state light field Transposed matrix negative of the value Phase decoherence factor
CLC: O431.2
Type: Master's thesis
Year: 2011
Downloads: 25
Quote: 0
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Abstract


Quantum entanglement as quantum world the difference between the basic characteristics of the classical world , remote communications and other fields in quantum communication resources is particularly important to explore how to get a better coherence of the entangled state in the presence of phase decoherence phenomenon , people look forward to solve with important issue of practical significance . mainly on the characteristics of the light field with two two - level atoms interacting quantum entanglement . thesis mainly include the following aspects : (1) briefly discusses the basic theory of quantum entanglement and non - classical effects of the light field ; introduced the concept of phase decoherence and binomial field . (2) the phase decoherence coefficient gamma is the entanglement of . The results showed : phase decoherence factor does not completely destroy the coherence between the two atoms , but the attenuation of the oscillation amplitude of the atomic entangled two atoms end up in a more stable value of the entanglement of entangled states . (3) the use of quantum theory to discuss the dipole - dipole interaction coefficient between two atoms entanglement character : select the appropriate phase the decoherence factor role , the greater the coefficient of the dipole-dipole interaction between the two atoms coherence . entangled state in a short period of time the two atoms of the value of the entanglement of high and stable . (4) to discuss the impact of the transition photon number of the entanglement of the transition photon number can be drawn from the results : select the appropriate parameters change can change the cycle of entanglement between atoms and the strength of entanglement , to avoid the emergence of the phenomenon of disentanglement . (5) negative eigenvalues ??of the full quantum theory and transposed matrix method to study the phase decoherence multi-photon TC model in two two-level atoms of the binomial field interacting system of two - atom entanglement character . The the binomial field of the maximum number of photons M binomial field coefficient 77 , phase decoherence coefficient gamma transition photon number m atom entanglement .

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CLC: > Mathematical sciences and chemical > Physics > Optics > The light nature of the theory > Quantum optics
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