Study On Entanglement Of Formation In The Dissipative Cavity System

Quantum information theory is a newly arisen cross academics which is the combinationof classical information theory and quantum mechanics. In quantum information theory,including the newly developed promising field of quantum game theory as well as the wellknown fields such as quantum communication and quantum computation.Cavity quantum electrodynamics is one of the important protocols of realizing quantuminformation process, is also currently to acquire the physical system that Deterministicmulti-particle entanglement on the experiment.Quantum entanglement is one of the most basic characteristics of quantum mechanics, theimportance of quantum entanglement states to quantum information lies in the aspect ofQuantum Communication to build up the quantum channel of the Communication betweentwo parties and making use of this kind of quantum channel assist by classic Communicationto carry out the purpose that the information deliver. Moreover the quantum entanglementalso is placed an important position in the realization of the quantum teleportation and thequantum cryptography;In the paper, we discussed information transfer in the disspative atom-cavity idealcondition and the influence of dissipation on entanglement of formation, on the contition ofthree qubit we study the influence of the cavitys initial entanglement of Von Neumannentropy on the field entropy. on the base of review of the fundamental theoretical frame of thequantum information theory, physics realization and development general situation; thedevelopment and application of cavity quantum electrodynamics which is a protocol ofrealizing quantum information process ;the quantum entanglement of development and itsbasic theories.Then do detailed analysis.finally summed up above each contents and do some outlooks to aftertime's work...