Direct Measurement of Long-Range Third-Order Coherence in Bose-Einstein Condensates

@article{Hodgman2011DirectMO,
  title={Direct Measurement of Long-Range Third-Order Coherence in Bose-Einstein Condensates},
  author={Sean S. Hodgman and Robert Dall and Andrew Manning and Kenneth G. H. Baldwin and Andrew G. Truscott},
  journal={Science},
  year={2011},
  volume={331},
  pages={1046 - 1049}
}
Correlation of arrival times of metastable helium atoms is consistent with long-range coherence to higher orders. A major advance in understanding the behavior of light was to describe the coherence of a light source by using correlation functions that define the spatio-temporal relationship between pairs and larger groups of photons. Correlations are also a fundamental property of matter. We performed simultaneous measurement of the second- and third-order correlation functions for atoms. Atom… 
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References

SHOWING 1-10 OF 35 REFERENCES
SPATIAL COHERENCE AND DENSITY CORRELATIONS OF TRAPPED BOSE GASES
We study first- and second-order coherence of trapped dilute Bose gases using appropriate correlation functions. Special attention is given to the discussion of second-order or density correlations.
Correlations and counting statistics of an atom laser.
TLDR
Time-resolved counting of single atoms extracted from a weakly interacting Bose-Einstein condensate of 87Rb atoms is demonstrated.
Pair-correlation function of a metastable helium Bose-Einstein condensate
The pair-correlation function is one of the basic quantities to characterize the coherence properties of a Bose-Einstein condensate. We calculate this function in the experimentally important case of
Coherence, Correlations, and Collisions: What One Learns about Bose-Einstein Condensates from Their Decay
We have used three-body recombination rates as a sensitive probe of the statistical correlations between atoms in Bose-Einstein condensates (BEC) and in ultracold noncondensed dilute atomic gases. We
Observation of Interference Between Two Bose Condensates
TLDR
It is demonstrated that Bose condensed atoms are “laser-like”; that is, they are coherent and show long-range correlations and have direct implications for the atom laser and the Josephson effect for atoms.
Higher-Order Photon Bunching in a Semiconductor Microcavity
TLDR
The results confirm the predicted “n factorial” dependence, showing that the tendency to bunch gets stronger as the number of independent photons is increased, and show bunching behavior in the strong coupling case, which vanishes in the weak coupling regime as the cavity starts lasing.
Observation of reduced three-body recombination in a correlated 1D degenerate Bose gas.
TLDR
A signature of correlation intermediate between that of the uncorrelated, phase coherent, 1D, mean-field regime and the strongly correlated Tonks-Girardeau regime is found.
Higher order coherence of exciton-polariton condensates
The second- and third-order coherence functions g((n))(0) (n= 2 and 3) of an exciton-polariton condensate are measured and compared to the theory. Contrary to an ideal photon laser, deviation from
Spatial quantum noise interferometry in expanding ultracold atom clouds
TLDR
It is shown that strong periodic quantum correlations exist between density fluctuations in the expanding atom cloud, and these spatial correlations reflect the underlying ordering in the lattice, and find a natural interpretation in terms of a multiple-wave HBT interference effect.
Quantum non-demolition detection of strongly correlated systems
Preparation, manipulation and detection of strongly correlated states of quantum many-body systems are among the most important goals and challenges of modern physics. Ultracold atoms offer an
...
1
2
3
4
...