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Title: Enhancement of entanglement by means of squeezing in continuous-variable systems
Authors: Er, Chern Han
Keywords: DRNTU::Science::Physics::Atomic physics::Quantum theory
Issue Date: 2010
Abstract: In this project, we investigate the enhancement of entanglement by means of local squeezing of the coherent initial state in various two-mode coupled harmonic oscillator systems within the pure Gaussian regime. Remarkably, we discover that the enhancement of maximum entanglement produced in the time evolution occurs under two different conditions: the existence or non-existence of an entanglement enhancement threshold. By developing a mathematical framework, we are able to: (i) develop a phase-space picture that allows us to explain the entanglement enhancement due to squeezing; (ii) explain the origin of the threshold. In particular, it has enabled us to determine the analytical expression of the threshold.
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Student Reports (FYP/IA/PA/PI)

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