Physics – Quantum Physics
Scientific paper
2011-06-13
Physics
Quantum Physics
14 pages, 7 figures, sections III and IV merged with section II and analytic expressions moved to Appendices A and B. Figures
Scientific paper
A pair of two level atoms A1A2, prepared either in a separable state or in an entangled state, interacts with a single mode of two mode squeezed cavity field while a third atomic qubit B interacts with the second mode of the squeezed field in a remote cavity. We analyze, numerically, the generation, sudden death and revival of three qubit entanglement as a function of initial entanglement of qubits A1A2 and degree of squeezing of electromagnetic field. Global negativity of partially transposed state operator is used to quantify the entanglement of three atom state. It is found that the initial entanglement of two mode field as well as that of the pair A1A2, both, contribute to three atom entanglement. A maximally entangled single excitation Bell pair in first cavity and two mode field with squeeze parameter s=0.64 are the initial conditions that optimize the peak value of three qubit mixed state entanglement. A smaller value of s=0.4 under similar conditions is found to generate a three qubit mixed state with comparable entanglement dynamics free from entanglement sudden death.
dos Reis Paulo Jose
Sharma Naresh K.
Sharma Shelly S.
No associations
LandOfFree
Entanglement generation and transfer between remote atomic qubits interacting with squeezed field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Entanglement generation and transfer between remote atomic qubits interacting with squeezed field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Entanglement generation and transfer between remote atomic qubits interacting with squeezed field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-112792