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.
| Original language | English |
|---|---|
| Article number | 260403 |
| Journal | Physical Review Letters |
| Volume | 123 |
| Issue number | 26 |
| E-pub ahead of print | 27 Dec 2019 |
| DOIs | |
| Publication status | Published - 31 Dec 2019 |
ASJC Scopus subject areas
- General Physics and Astronomy
Projects
- 3 Finished
-
QuantumFrontiers: Cluster of Excellence 2123/1: Light and Matter at the Quantum Frontier
Schmidt, P. O. (Principal Investigator), Ospelkaus-Schwarzer, S. (Principal Investigator), Chichkov, B. (Principal Investigator), Danzmann, K. (Principal Investigator), Ertmer, W. (Principal Investigator), Hammerer, K. J. (Principal Investigator), Haug, R. (Principal Investigator), Heinzel, G. (Principal Investigator), Heurs, M. (Principal Investigator), Klempt, C. (Principal Investigator), Kroker, S. (Principal Investigator), Lisdat, C. (Principal Investigator), Mehlstäubler, T. (Principal Investigator), Müller, J. (Principal Investigator), Ospelkaus, C. (Principal Investigator), Rasel, E. M. (Principal Investigator), Recher, P. (Principal Investigator), Santos, L. S. (Principal Investigator), Schilling, M. (Principal Investigator), Schlickum, U. (Principal Investigator), Schumacher, H. W. (Principal Investigator), Surzhykov, A. (Principal Investigator), Waag, A. (Principal Investigator), Werner, R. (Principal Investigator) & Willke, B. (Principal Investigator)
1 Jan 2019 → 31 Dec 2025
Project: Research
-
DQ-mat: Collaborative Research Centre 1227/1, sub-project B01: Entangled neutral atoms for interferometry beyond the standard quantum limit
Klempt, C. (Principal Investigator)
1 Jul 2016 → 30 Jun 2020
Project: Research
-
DQ-mat: Collaborative Research Centre 1227/1: Designed Quantum States of Matter - Generation, Manipulation and Detection for Metrological Applications and Tests of Fundamental Physics
Schmidt, P. O. (Principal Investigator)
1 Jul 2016 → 30 Jun 2020
Project: Research
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