Preventing Multipartite Disentanglement by Local Modulations

Abstract

An entangled multipartite system coupled to a zero-temperature bath undergoes rapid disentanglement in many realistic scenarios, due to local, symmetry-breaking, differences in the particle-bath couplings. We show that locally controlled perturbations, addressing each particle individually, can impose a symmetry, and thus allow the existence of decoherence-free multipartite entangled systems in zero-temperature environments.

5 pages, 2 figures

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• Finite-Time Disentanglement via Spontaneous Emission
• Spatial quantum noise interferometry in expanding ultracold atom clouds
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• Experimental Quantum Communication without a Shared Reference Frame
• Scalable solid-state quantum processor using subradiant two-atom states
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Cited by in corpus (6)

• Sudden Death of Entanglement
• Deterministic generation of large cluster states using non-deterministic collective measurements based on quantum Zeno effect
• Universal dynamical decoherence control of noisy single-and multi-qubit systems
• Bosonic amplification of noise-induced suppression of phase diffusion
• Universal Dephasing Control During Quantum Computation
• Generalized Quantum Telecloning