Decoherence of <sup>7</sup>Li Matter-Wave Breathers
ORAL
Abstract
Breathers are excitations of fundamental solitons that are exactly integrable in one-dimension (1D). Matter-wave breathers have been realized from atomic BECs confined in
quasi-1D traps1,2. These matter-wave breathers have attracted attention for their potential to realize macroscopic beyond mean-field (MF) behavior due to quantum fluctuations of their macroscopic degrees of freedom3;4. In particular, the dissociation of 2-soliton breathers into their constituent solitons is interesting because it can be caused by both MF5 and quantum6 effects. However, the dynamics of the dissociated breather and properties of the constituent solitons are completely different for MF and quantum dissociation. In this work, we observe and characterize the dissociation of 2-soliton breathers. We show that the behavior is in disagreement with predictions for dissociation due to quantum fluctuations and attribute the dissociation to atom loss from three-body recombination.
1. A. Di Carli et al., Phys. Rev. Lett. 123, 123602 (2019)
2. D. Luo et al., Phys. Rev. Lett. 125, 183902 (2020)
3. B. Opanchuk and P.D. Drummond, Phys. Rev. A. 96, 053628 (2017)
4. O.V. Marchukov et al., Phys. Rev. Lett. 125, 050405 (2020)
5. N. Pereira and F. Chu, Phys. Fluids 22, 874 (1979)
6. O.V. Marchukov et al., Phys. Rev. Lett. 125, 050405 (2020)
quasi-1D traps1,2. These matter-wave breathers have attracted attention for their potential to realize macroscopic beyond mean-field (MF) behavior due to quantum fluctuations of their macroscopic degrees of freedom3;4. In particular, the dissociation of 2-soliton breathers into their constituent solitons is interesting because it can be caused by both MF5 and quantum6 effects. However, the dynamics of the dissociated breather and properties of the constituent solitons are completely different for MF and quantum dissociation. In this work, we observe and characterize the dissociation of 2-soliton breathers. We show that the behavior is in disagreement with predictions for dissociation due to quantum fluctuations and attribute the dissociation to atom loss from three-body recombination.
1. A. Di Carli et al., Phys. Rev. Lett. 123, 123602 (2019)
2. D. Luo et al., Phys. Rev. Lett. 125, 183902 (2020)
3. B. Opanchuk and P.D. Drummond, Phys. Rev. A. 96, 053628 (2017)
4. O.V. Marchukov et al., Phys. Rev. Lett. 125, 050405 (2020)
5. N. Pereira and F. Chu, Phys. Fluids 22, 874 (1979)
6. O.V. Marchukov et al., Phys. Rev. Lett. 125, 050405 (2020)
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Presenters
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Ricardo Espinoza
Rice University
Authors
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Ricardo Espinoza
Rice University
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Yi Jin
Rice University
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Randy G Hulet
Rice University, Rice
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Maxim Olshanii
University of Massachusetts Boston
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Vanja Dunjko
University of Massachusetts Boston