Emission of Spin-Correlated Matter-Wave Jets from Spinor Bose-Einstein Condensates
Name
PhysRevLett.127.043401.pdf
Description
Published version
Size
893 KB
Format
Unknown
Checksum (MD5)
a7f377f7413aba66ce23c8f3d8c2e3eb
Author(s)
Kim, Kyungtae
Hur, Junhyeok
Huh, SeungJung
Choi, Soonwon
Choi, Jae-yoon
Date Issued
July 2021
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Kim, Kyungtae, Hur, Junhyeok, Huh, SeungJung, Choi, Soonwon and Choi, Jae-yoon. 2021. "Emission of Spin-Correlated Matter-Wave Jets from Spinor Bose-Einstein Condensates." Physical Review Letters, 127 (4).
Version
Final published version
Abstract
We report the observation of matter-wave jet emission in a strongly
ferromagnetic spinor Bose-Einstein condensate of $^7$Li atoms. Directional
atomic beams with $|{F=1,m_F=1}\rangle$ and $|{F=1,m_F=-1}\rangle$ spin states
are generated from $|{F=1,m_F=0}\rangle$ state condensates, or vice versa. This
results from collective spin-mixing scattering events, where spontaneously
produced pairs of atoms with opposite momentum facilitates additional
spin-mixing collisions as they pass through the condensates. The matter-wave
jets of different spin states ($|{F=1,m_F=\pm1}\rangle$) can be a macroscopic
Einstein-Podolsky-Rosen state with spacelike separation. Its spin-momentum
correlations are studied by using the angular correlation function for each
spin state. Rotating the spin axis, the inter-spin and intra-spin momentum
correlation peaks display a high contrast oscillation, indicating collective
coherence of the atomic ensembles. We provide numerical calculations that
describe the experimental results at a quantitative level and can identify its
entanglement after 100~ms of a long time-of-flight.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/physrevlett.127.043401
