Interference of interacting matter waves

Mattias Gustavsson, Elmar Haller, Manfred J. Mark, Johann G. Danzl, Russell Hart, Andrew J. Daley, Hanns-Christoph Nägerl

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The phenomenon of matter-wave interference lies at the heart of quantum physics. It has been observed in various contexts in the limit of non-interacting particles as a single-particle effect. Here we observe and control matter-wave interference whose evolution is driven by interparticle interactions. In a multi-path matter-wave interferometer, the macroscopic many-body wave function of an interacting atomic Bose-Einstein condensate develops a regular interference pattern, allowing us to detect and directly visualize the effect of interaction-induced phase shifts. We demonstrate control over the phase evolution by inhibiting interaction-induced dephasing and by refocusing a dephased macroscopic matter wave in a spin-echo-type experiment. Our results show that interactions in a many-body system lead to a surprisingly coherent evolution, possibly enabling narrow-band and high-brightness matter-wave interferometers based on atom lasers.
LanguageEnglish
Article number065029
Number of pages11
JournalNew Journal of Physics
Volume12
DOIs
Publication statusPublished - 28 Jun 2010

Fingerprint

interference
interferometers
interactions
Bose-Einstein condensates
narrowband
echoes
brightness
phase shift
wave functions
physics
lasers
atoms

Keywords

  • neutron interferometry
  • Bose-Einstein condensate
  • atom lasers
  • matter-wave interference
  • interparticle interactions

Cite this

Gustavsson, M., Haller, E., Mark, M. J., Danzl, J. G., Hart, R., Daley, A. J., & Nägerl, H-C. (2010). Interference of interacting matter waves. New Journal of Physics, 12, [065029]. https://doi.org/10.1088/1367-2630/12/6/065029
Gustavsson, Mattias ; Haller, Elmar ; Mark, Manfred J. ; Danzl, Johann G. ; Hart, Russell ; Daley, Andrew J. ; Nägerl, Hanns-Christoph. / Interference of interacting matter waves. In: New Journal of Physics. 2010 ; Vol. 12.
@article{ee9d56d569874a2ab651186d1c59ee60,
title = "Interference of interacting matter waves",
abstract = "The phenomenon of matter-wave interference lies at the heart of quantum physics. It has been observed in various contexts in the limit of non-interacting particles as a single-particle effect. Here we observe and control matter-wave interference whose evolution is driven by interparticle interactions. In a multi-path matter-wave interferometer, the macroscopic many-body wave function of an interacting atomic Bose-Einstein condensate develops a regular interference pattern, allowing us to detect and directly visualize the effect of interaction-induced phase shifts. We demonstrate control over the phase evolution by inhibiting interaction-induced dephasing and by refocusing a dephased macroscopic matter wave in a spin-echo-type experiment. Our results show that interactions in a many-body system lead to a surprisingly coherent evolution, possibly enabling narrow-band and high-brightness matter-wave interferometers based on atom lasers.",
keywords = "neutron interferometry, Bose-Einstein condensate, atom lasers, matter-wave interference, interparticle interactions",
author = "Mattias Gustavsson and Elmar Haller and Mark, {Manfred J.} and Danzl, {Johann G.} and Russell Hart and Daley, {Andrew J.} and Hanns-Christoph N{\"a}gerl",
year = "2010",
month = "6",
day = "28",
doi = "10.1088/1367-2630/12/6/065029",
language = "English",
volume = "12",
journal = "New Journal of Physics",
issn = "1367-2630",

}

Gustavsson, M, Haller, E, Mark, MJ, Danzl, JG, Hart, R, Daley, AJ & Nägerl, H-C 2010, 'Interference of interacting matter waves' New Journal of Physics, vol. 12, 065029. https://doi.org/10.1088/1367-2630/12/6/065029

Interference of interacting matter waves. / Gustavsson, Mattias; Haller, Elmar; Mark, Manfred J.; Danzl, Johann G.; Hart, Russell; Daley, Andrew J.; Nägerl, Hanns-Christoph.

In: New Journal of Physics, Vol. 12, 065029, 28.06.2010.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Interference of interacting matter waves

AU - Gustavsson, Mattias

AU - Haller, Elmar

AU - Mark, Manfred J.

AU - Danzl, Johann G.

AU - Hart, Russell

AU - Daley, Andrew J.

AU - Nägerl, Hanns-Christoph

PY - 2010/6/28

Y1 - 2010/6/28

N2 - The phenomenon of matter-wave interference lies at the heart of quantum physics. It has been observed in various contexts in the limit of non-interacting particles as a single-particle effect. Here we observe and control matter-wave interference whose evolution is driven by interparticle interactions. In a multi-path matter-wave interferometer, the macroscopic many-body wave function of an interacting atomic Bose-Einstein condensate develops a regular interference pattern, allowing us to detect and directly visualize the effect of interaction-induced phase shifts. We demonstrate control over the phase evolution by inhibiting interaction-induced dephasing and by refocusing a dephased macroscopic matter wave in a spin-echo-type experiment. Our results show that interactions in a many-body system lead to a surprisingly coherent evolution, possibly enabling narrow-band and high-brightness matter-wave interferometers based on atom lasers.

AB - The phenomenon of matter-wave interference lies at the heart of quantum physics. It has been observed in various contexts in the limit of non-interacting particles as a single-particle effect. Here we observe and control matter-wave interference whose evolution is driven by interparticle interactions. In a multi-path matter-wave interferometer, the macroscopic many-body wave function of an interacting atomic Bose-Einstein condensate develops a regular interference pattern, allowing us to detect and directly visualize the effect of interaction-induced phase shifts. We demonstrate control over the phase evolution by inhibiting interaction-induced dephasing and by refocusing a dephased macroscopic matter wave in a spin-echo-type experiment. Our results show that interactions in a many-body system lead to a surprisingly coherent evolution, possibly enabling narrow-band and high-brightness matter-wave interferometers based on atom lasers.

KW - neutron interferometry

KW - Bose-Einstein condensate

KW - atom lasers

KW - matter-wave interference

KW - interparticle interactions

UR - http://www.scopus.com/inward/record.url?scp=77955076301&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/12/6/065029

DO - 10.1088/1367-2630/12/6/065029

M3 - Article

VL - 12

JO - New Journal of Physics

T2 - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 065029

ER -