Strong subadditivity inequality for quantum entropies and four-particle entanglement

Abstract

Strong subadditivity inequality for a three-particle composite system is an important inequality in quantum information theory which can be studied via a four-particle entangled state. We use two three-level atoms in $\Lambda$ configuration interacting with a two-mode cavity and the Raman adiabatic passage technique for the production of the four-particle entangled state. Using this four-particle entanglement, we study for the first time various aspects of the strong subadditivity inequality.

5 pages, 3 figures, RevTeX4, submitted to PRA

References in corpus (26)

• Entanglement of Formation of an Arbitrary State of Two Qubits
• Mixed State Entanglement and Quantum Error Correction
• Separability Criterion for Density Matrices
• A computable measure of entanglement
• Separability of Mixed States: Necessary and Sufficient Conditions
• Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
• Entanglement of a Pair of Quantum Bits
• Distributed Entanglement
• Peres-Horodecki separability criterion for continuous variable systems
• Inseparability criterion for continuous variable systems
• Quantifying Entanglement
• The Role of Relative Entropy in Quantum Information Theory
• Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
• Information and Computation: Classical and Quantum Aspects
• Characterizing Entanglement
• Entanglement induced by a single-mode heat environment
• Fundamentals of Quantum Information Theory
• Multi-particle entanglement and its applications to cryptography
• On the von Neumann capacity of noisy quantum channels
• Partial Teleportation of Entanglement in the Noisy Environment
• How entangled can two couples get?
• Inequalities for Quantum Entropy: A Review with Conditions for Equality
• Experimental observation of four-photon entanglement from down-conversion
• On Multipartite Pure-State Entanglement
• Experimental demonstration of a controlled-NOT wave-packet gate
• Entanglement Measure for Composite Systems

Cited by in corpus (4)

• Stimulated Raman adiabatic passage in physics, chemistry and beyond
• On maximal entanglement between two pairs in four-qubit pure states
• Regulating entanglement production in multitrap Bose-Einstein condensates
• Dynamics of quantum correlations and linear entropy in a multi-qubit-cavity system