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arXiv · 2108.11772

Experimental control of quantum-mechanical entanglement in an attosecond pump-probe experiment

Lisa-Marie Koll·Laura Maikowski·Lorenz Drescher·Tobias Witting·Marc J. J. Vrakking
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Abstract

Entanglement is one of the most intriguing aspects of quantum mechanics and lies at the heart of the ongoing Second Quantum Revolution, where it is a resource that is used in quantum key distribution, quantum computing and quantum teleportation. We report experiments demonstrating the crucial role that entanglement plays in pump-probe experiments involving ionization, which are a hallmark of the novel research field of attosecond science. We demonstrate that the degree of entanglement in a bipartite ion plus photoelectron system, and, as a consequence, the degree of vibrational coherence in the ion, can be controlled by tailoring the spectral properties of the attosecond extreme ultra-violet laser pulses that are used to create them.

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Lisa-Marie Koll, Laura Maikowski, Lorenz Drescher, Tobias Witting, Marc J. J. Vrakking. 2021-08-26. Experimental control of quantum-mechanical entanglement in an attosecond pump-probe experiment. https://doi.org/10.1103/physrevlett.128.043201

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