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

verfasst von: L. Pezzè, M. Gessner, P. Feldmann, C. Klempt, L. Santos, A. Smerzi
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.
Organisationseinheit(en): Institut für Theoretische Physik
Institut für Quantenoptik
QuantumFrontiers
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)
Externe Organisation(en): QSTAR
CNR Istituto Nazionale di Ottica (INO)
European Laboratory for Non-linear Spectroscopy (LENS)
Université Paris Sciences et Lettres
Typ: Artikel
Journal: Physical Review Letters
Band: 123
ISSN: 0031-9007
Publikationsdatum: 31.12.2019
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Physik und Astronomie (insg.)
Elektronische Version(en): https://doi.org/10.48550/arXiv.1712.03864 (Zugang: Offen)
https://doi.org/10.1103/PhysRevLett.123.260403 (Zugang: Geschlossen)

BibTeX

@article{25da6d041f0b449ab5aa43913de3aedc,
title = "Heralded Generation of Macroscopic Superposition States in a Spinor Bose-Einstein Condensate",
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.",
author = "L. Pezz{\`e} and M. Gessner and P. Feldmann and C. Klempt and L. Santos and A. Smerzi",
year = "2019",
month = dec,
day = "31",
doi = "10.48550/arXiv.1712.03864",
language = "English",
volume = "123",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "26",
}