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Boström EV, Gisselbrecht M, Brage T, et al. Time-Stretched Spectroscopy by the Quantum Zeno Effect: The Case of Auger Decay. Phys Rev Lett. 2018;121(23):233201doi: 10.1103/PhysRevLett.121.233201.
Boström, E. V., Gisselbrecht, M., Brage, T., Almbladh, C. O., Mikkelsen, A., & Verdozzi, C. (2018). Time-Stretched Spectroscopy by the Quantum Zeno Effect: The Case of Auger Decay. Physical review letters, 121(23), 233201. https://doi.org/10.1103/PhysRevLett.121.233201
Boström, E Viñas, et al. "Time-Stretched Spectroscopy by the Quantum Zeno Effect: The Case of Auger Decay." Physical review letters vol. 121,23 (2018): 233201. doi: https://doi.org/10.1103/PhysRevLett.121.233201
Boström EV, Gisselbrecht M, Brage T, Almbladh CO, Mikkelsen A, Verdozzi C. Time-Stretched Spectroscopy by the Quantum Zeno Effect: The Case of Auger Decay. Phys Rev Lett. 2018 Dec 07;121(23):233201. doi: 10.1103/PhysRevLett.121.233201. PMID: 30576192.
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Phys Rev Lett. 2018 Dec 07;121(23):233201. doi: 10.1103/PhysRevLett.121.233201.

Time-Stretched Spectroscopy by the Quantum Zeno Effect: The Case of Auger Decay.

Physical review letters

E Viñas Boström, M Gisselbrecht, T Brage, C-O Almbladh, A Mikkelsen, C Verdozzi

Affiliations

  1. Lund University, Department of Physics and ETSF, P.O. Box 118, 221 00 Lund, Sweden.
  2. Lund University, Department of Physics, P.O. Box 118, 221 00 Lund, Sweden.

PMID: 30576192 DOI: 10.1103/PhysRevLett.121.233201

Abstract

A tenet of time-resolved spectroscopy is "faster laser pulses for shorter timescales". Here, we suggest turning this paradigm around, and slowing down the system dynamics via repeated measurements, to do spectroscopy on longer timescales. This is the principle of the quantum Zeno effect. We exemplify our approach with the Auger process, and find that repeated measurements increase the core-hole lifetime, redistribute the kinetic energy of Auger electrons, and alter entanglement formation. We further provide an explicit experimental protocol for atomic Li, to make our proposal concrete.

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