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Title: Rogue decoherence in the formation of a macroscopic atom-molecule superposition

Abstract

We theoretically examine two-color photoassociation of a Bose-Einstein condensate, focusing on the role of rogue decoherence in the formation of macroscopic atom-molecule superpositions. Rogue dissociation occurs when two zero-momentum condensate atoms are photoassociated into a molecule, which then dissociates into a pair of atoms of equal-and-opposite momentum, instead of dissociating back to the zero-momentum condensate. As a source of decoherence that may damp quantum correlations in the condensates, rogue dissociation is an obstacle to the formation of a macroscopic atom-molecule superposition. We study rogue decoherence in a setup which, without decoherence, would yield a macroscopic atom-molecule superposition, and find that the most favorable conditions for said superpositions are a density {rho}{approx}10{sup 12} cm{sup -3} and temperature T{approx}0.1 nK.

Authors:
;  [1]
  1. Helsinki Institute of Physics, PL 64, FIN-00014 Helsingin yliopisto, Finland and Department of Physics, University of Turku, FIN-20014 Turun yliopisto (Finland)
Publication Date:
OSTI Identifier:
20974773
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 74; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.74.053601; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; BOSE-EINSTEIN CONDENSATION; COLOR; CORRELATIONS; DENSITY; DISSOCIATION; MOLECULES; MULTI-PHOTON PROCESSES; PHOTON-ATOM COLLISIONS; QUANTUM DECOHERENCE; TEMPERATURE RANGE 0000-0013 K

Citation Formats

Dannenberg, Olavi, Mackie, Matt, and Department of Physics, Temple University, Philadelphia, Pennsylvania 19122. Rogue decoherence in the formation of a macroscopic atom-molecule superposition. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.74.053601.
Dannenberg, Olavi, Mackie, Matt, & Department of Physics, Temple University, Philadelphia, Pennsylvania 19122. Rogue decoherence in the formation of a macroscopic atom-molecule superposition. United States. https://doi.org/10.1103/PHYSREVA.74.053601
Dannenberg, Olavi, Mackie, Matt, and Department of Physics, Temple University, Philadelphia, Pennsylvania 19122. 2006. "Rogue decoherence in the formation of a macroscopic atom-molecule superposition". United States. https://doi.org/10.1103/PHYSREVA.74.053601.
@article{osti_20974773,
title = {Rogue decoherence in the formation of a macroscopic atom-molecule superposition},
author = {Dannenberg, Olavi and Mackie, Matt and Department of Physics, Temple University, Philadelphia, Pennsylvania 19122},
abstractNote = {We theoretically examine two-color photoassociation of a Bose-Einstein condensate, focusing on the role of rogue decoherence in the formation of macroscopic atom-molecule superpositions. Rogue dissociation occurs when two zero-momentum condensate atoms are photoassociated into a molecule, which then dissociates into a pair of atoms of equal-and-opposite momentum, instead of dissociating back to the zero-momentum condensate. As a source of decoherence that may damp quantum correlations in the condensates, rogue dissociation is an obstacle to the formation of a macroscopic atom-molecule superposition. We study rogue decoherence in a setup which, without decoherence, would yield a macroscopic atom-molecule superposition, and find that the most favorable conditions for said superpositions are a density {rho}{approx}10{sup 12} cm{sup -3} and temperature T{approx}0.1 nK.},
doi = {10.1103/PHYSREVA.74.053601},
url = {https://www.osti.gov/biblio/20974773}, journal = {Physical Review. A},
issn = {1050-2947},
number = 5,
volume = 74,
place = {United States},
year = {Wed Nov 15 00:00:00 EST 2006},
month = {Wed Nov 15 00:00:00 EST 2006}
}