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Heralded Generation of Macroscopic Superposition States in a Spinor Bose-Einstein Condensate

  • L. Pezzè
  • , M. Gessner
  • , P. Feldmann
  • , C. Klempt
  • , L. Santos
  • , A. Smerzi

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Abstract

Macroscopic superposition states enable fundamental tests of quantum mechanics and hold a huge potential in metrology, sensing, and other quantum technologies. We propose to generate macroscopic superposition states of a large number of atoms in the ground state of a spin-1 Bose-Einstein condensate. Measuring the number of particles in one mode prepares with large probability highly entangled macroscopic superposition states in the two remaining modes. The macroscopic superposition states are heralded by the measurement outcome. Our protocol is robust under realistic conditions in current experiments, including finite adiabaticity, particle loss, and measurement uncertainty.

OriginalspracheEnglisch
Aufsatznummer260403
FachzeitschriftPhysical Review Letters
Jahrgang123
Ausgabenummer26
Elektronisch veröffentlicht (E-Pub)27 Dez. 2019
DOIs
PublikationsstatusVeröffentlicht - 31 Dez. 2019

ASJC Scopus Sachgebiete

  • Allgemeine Physik und Astronomie

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