Experimental investigation of dynamical invariants in bipartite entanglement

Abstract

The non-conservation of entanglement, when two or more particles interact, sets it apart from other dynamical quantities like energy and momentum. It does not allow the interpretation of the subtle dynamics of entanglement as a flow of this quantity between the constituents of the system. Here we show that adding a third party to a two-particle system may lead to a conservation law that relates the quantities characterizing the bipartite entanglement between each of the parties and the other two. We provide an experimental demonstration of this idea using entangled photons, and generalize it to N-partite GHZ states.

References in corpus (8)

• Finite-Time Disentanglement via Spontaneous Emission
• Sudden Death of Entanglement
• Quantum Open System Theory: Bipartite Aspects
• Experimental investigation of the dynamics of entanglement: Sudden death, complementarity, and continuous monitoring of the environment
• Scaling laws for the decay of multiqubit entanglement
• Quantum simulation of the wavefunction to probe frustrated Heisenberg spin systems
• Direct measurement of finite-time disentanglement induced by a reservoir
• Quantum Non-Demolition Test of Bipartite Complementarity

Cited by in corpus (8)

• Open-System Dynamics of Entanglement
• Experimental simulation of decoherence in photonics qudits
• Flow of Quantum Correlations from a Two-Qubit System to its Environment
• Initial Conditions and Entanglement Sudden Death
• Realization of the tradeoff between internal and external entanglement
• Guaranteed emergence of genuine entanglement in 3-qubit evolving systems
• Entanglement distribution in fermion model with long-range interaction
• Entanglement And Non-Trivial Topologies