Time Resolved Collective Entanglement Dynamics in Cavity Quantum Electrodynamics

Details Time Resolved Collective Entanglement Dynamics in Cavity Quantum Electrodynamics Time Resolved Collective Entanglement Dynamics in Cavity Quantum Electrodynamics

2012-02-23

arxiv.org/abs/1202.5191v1

Physics

Quantum Physics

Scientific paper

Nonlinearity and entanglement are two important indications by which physical systems can be identified as non-classical. We study the dynamics of the resonant interaction of up to N=3 two-level systems and a single mode of the electromagnetic field. We focus on a single excitation dynamically shared in this fourpartite system. We observe coherent vacuum Rabi oscillations and their nonlinear square root N speed-up in frequency by tracking the populations of all three qubits and the resonator. We use full quantum state tomography to verify that the dynamics generates a maximally entangled 3-qubit W-state when the cavity returns to the vacuum state.

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