TY - JOUR
T1 - Erratum
T2 - Momentum-Resolved Observation of Thermal and Quantum Depletion in a Bose Gas (Phys. Rev. Lett. (2016) 117 (235303) DOI: 10.1103/PhysRevLett.117.235303)
AU - Chang, R.
AU - Bouton, Q.
AU - Cayla, H.
AU - Qu, C.
AU - Aspect, A.
AU - Westbrook, C. I.
AU - Clément, D.
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/5/12
Y1 - 2023/5/12
N2 - In this Letter, we were unaware of the presence of spin impurities (in the magnetic substate mJ = 0) in the Bose-Einstein condensates (BECs) we analyzed. We therefore erroneously interpreted the data as if we had been dealing with the expansion of a pure BEC in the substate mJ = +1. Although we had underlined a series of caveats, this led us to associate the observed 1/k4 tails in the momentum distribution with the quantum depletion of the BEC. In later experimental developments, we realized that our BECs contained a small number of spin impurities, and that their effect can be substantial even at very low concentrations. Indeed, in [1], we demonstrate that the observed algebraic tails are not a manifestation of the quantum depletion of the BEC (since the tails disappear when we remove the impurities), but rather result from the interaction between the spin impurities and the BEC during the out-of-equilibrium expansion dynamics.
AB - In this Letter, we were unaware of the presence of spin impurities (in the magnetic substate mJ = 0) in the Bose-Einstein condensates (BECs) we analyzed. We therefore erroneously interpreted the data as if we had been dealing with the expansion of a pure BEC in the substate mJ = +1. Although we had underlined a series of caveats, this led us to associate the observed 1/k4 tails in the momentum distribution with the quantum depletion of the BEC. In later experimental developments, we realized that our BECs contained a small number of spin impurities, and that their effect can be substantial even at very low concentrations. Indeed, in [1], we demonstrate that the observed algebraic tails are not a manifestation of the quantum depletion of the BEC (since the tails disappear when we remove the impurities), but rather result from the interaction between the spin impurities and the BEC during the out-of-equilibrium expansion dynamics.
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U2 - 10.1103/PhysRevLett.130.199902
DO - 10.1103/PhysRevLett.130.199902
M3 - Comment/debate
C2 - 37243665
AN - SCOPUS:85159845474
SN - 0031-9007
VL - 130
JO - Physical Review Letters
JF - Physical Review Letters
IS - 19
M1 - 199902
ER -