Experimental generation of pseudo bound entanglement

Abstract

We use Nuclear Magnetic Resonance (NMR) to experimentally generate a bound entangled (more precisely: pseudo bound entangled) state, i.e. a quantum state which is non-distillable but nevertheless entangled. Our quantum system consists of three qubits. We characterize the produced state via state tomography to show that the created state has a positive partial transposition with respect to any bipartite splitting, and we use a witness operator to prove its entanglement.

5 pages

References in corpus (8)

• Quantum entanglement
• Entanglement detection
• Scalable multi-particle entanglement of trapped ions
• Experimental entanglement of six photons in graph states
• Optimal spin squeezing inequalities detect bound entanglement in spin models
• Liquid State NMR as a Test-bed for Developing Quantum Control Methods
• Implementing Grover's Quantum Search on a Para-Hydrogen based Pure State NMR Quantum Computer
• Iterative quantum state transfer along a chain of nuclear spin qubits

Cited by in corpus (26)

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• Algorithm for characterizing stochastic local operations and classical communication classes of multiparticle entanglement
• Quantum information
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• Experimental Classification of Entanglement in Arbitrary Three-Qubit States on an NMR Quantum Information Processor
• Bound entangled states fit for robust experimental verification
• Experimental Extraction of Secure Correlations from a Noisy Private State
• How many mutually unbiased bases are needed to detect bound entangled states?
• Low rank positive partial transpose states and their relation to product vectors
• Entanglement detection on an NMR quantum information processor using random local measurements
• Controlling NMR spin systems for quantum computation
• Distillation of free entanglement from bound entangled states using weak measurements
• Delayed birth of distillable entanglement in the evolution of bound entangled states
• Experimentally identifying the entanglement class of pure tripartite states
• Experimental generation of complex noisy photonic entanglement
• $GHZ$ state generation of three Josephson qubits in presence of bosonic baths
• Experimental Detection of Qubit-Ququart Pseudo-Bound Entanglement using Three Nuclear Spins
• Low-dimensional quite noisy bound entanglement with cryptographic key
• Experimental Detection of Non-local Correlations using a Local Measurement-Based Hierarchy on an NMR Quantum Processor
• Creating multiphoton-polarization bound-entangled states
• Bound entanglement-assisted prepare-and-measure scenarios based on four-dimensional quantum messages
• Generation and Detection of Quantum Correlations and Entanglement on a Spin-Based Quantum Information Processor