Superballistic center-of-mass motion in one-dimensional attractive Bose gases: Decoherence-induced Gaussian random walks in velocity space

Weiss, C.; Cornish, S.L.; Gardiner, S.A.; Breuer, H.-P.

doi:10.1103/physreva.93.013605

Controlling the rotational and hyperfine state of ultracold Rb87Cs133 molecules (2016)
Journal Article
Gregory, P. D., Aldegunde, J., Hutson, J. M., & Cornish, S. L. (2016). Controlling the rotational and hyperfine state of ultracold Rb87Cs133 molecules. Physical Review Letters, 94(4), Article 041403(R). https://doi.org/10.1103/physreva.94.041403

We demonstrate coherent control of the rotational and hyperfine state of ultracold, chemically stable Rb87Cs133 molecules with external microwave fields. We create a sample of ∼2000 molecules in the lowest hyperfine level of the rovibronic ground sta... Read More about Controlling the rotational and hyperfine state of ultracold Rb87Cs133 molecules.

Production of ultracold 87Rb133Cs in the absolute ground state: complete characterisation of the STIRAP transfer (2016)
Journal Article
Molony, P. K., Gregory, P. D., Kumar, A., Le Sueur, C. R., Hutson, J. M., & Cornish, S. L. (2016). Production of ultracold 87Rb133Cs in the absolute ground state: complete characterisation of the STIRAP transfer. ChemPhysChem, 17(22), 3811-3817. https://doi.org/10.1002/cphc.201600501

We present the production of ultracold 87 RbCs molecules in the electronic, rovibrational and hyperfine ground state, using stimulated Raman adiabatic passage to transfer the molecules from a weakly bound Feshbach state. We measure one-way transfer e... Read More about Production of ultracold 87Rb133Cs in the absolute ground state: complete characterisation of the STIRAP transfer.

Measurement of the binding energy of ultracold 87Rb133Cs molecules using an offset-free optical frequency comb (2016)
Journal Article
Molony, P. . K., Kumar, A., Gregory, P. . D., Kliese, R., Puppe, T., Le Sueur, C. . R., …Cornish, S. . L. (2016). Measurement of the binding energy of ultracold 87Rb133Cs molecules using an offset-free optical frequency comb. Physical Review A, 94(2), Article 022507. https://doi.org/10.1103/physreva.94.022507

We report the binding energy of Rb87Cs133 molecules in their rovibrational ground state measured using an offset-free optical frequency comb based on difference frequency generation technology. We create molecules in the absolute ground state using s... Read More about Measurement of the binding energy of ultracold 87Rb133Cs molecules using an offset-free optical frequency comb.

Direct loading of a large Yb MOT on the 1S0 → 3P1 transition (2016)
Journal Article
Guttridge, A., Hopkins, S., Kemp, S., Boddy, D., Freytag, R., Jones, M., …Cornish, S. (2016). Direct loading of a large Yb MOT on the 1S0 → 3P1 transition. Journal of Physics B: Atomic, Molecular and Optical Physics, 49(14), Article 145006. https://doi.org/10.1088/0953-4075/49/14/145006

We report a robust technique for laser frequency stabilisation that enables the reproducible loading of in excess of 109 Yb atoms from a Zeeman slower directly into a magneto-optical trap (MOT) operating on the 1S0 → 3P1 transition, without the need... Read More about Direct loading of a large Yb MOT on the 1S0 → 3P1 transition.

A versatile dual-species Zeeman slower for caesium and ytterbium (2016)
Journal Article
Hopkins, S., Butler, K., Guttridge, A., Kemp, S., Cornish, S., Freytag, R., …Tarbutt, M. (2016). A versatile dual-species Zeeman slower for caesium and ytterbium. Review of Scientific Instruments, 87(4), Article 043109. https://doi.org/10.1063/1.4945795

We describe the design, construction, and operation of a versatile dual-species Zeeman slower for both Cs and Yb, which is easily adaptable for use with other alkali metals and alkaline earths. With the aid of analytic models and numerical simulation... Read More about A versatile dual-species Zeeman slower for caesium and ytterbium.

Stochastic growth dynamics and composite defects in quenched immiscible binary condensates (2016)
Journal Article
Liu, I., Pattinson, R., Billam, T., Gardiner, S., Cornish, S., Huang, T., …Proukakis, N. (2016). Stochastic growth dynamics and composite defects in quenched immiscible binary condensates. Physical Review A, 93(2), Article 023628. https://doi.org/10.1103/physreva.93.023628

We study the sensitivity of coupled condensate formation dynamics on the history of initial stochastic domain formation in the context of instantaneously quenched elongated harmonically trapped immiscible two-component atomic Bose gases. The spontane... Read More about Stochastic growth dynamics and composite defects in quenched immiscible binary condensates.

Production and characterisation of a dual species magneto-optical trap of cesium and ytterbium (2016)
Journal Article
Kemp, S., Butler, K., Freytag, R., Hopkins, S., Hinds, E., Tarbutt, M., & Cornish, S. (2016). Production and characterisation of a dual species magneto-optical trap of cesium and ytterbium. Review of Scientific Instruments, 87(2), Article 023105. https://doi.org/10.1063/1.4941719

We describe an apparatus designed to trap and cool a Yb and Cs mixture. The apparatus consists of a dual species effusive oven source, dual species Zeeman slower, magneto-optical traps in a single ultra-high vacuum science chamber, and the associated... Read More about Production and characterisation of a dual species magneto-optical trap of cesium and ytterbium.

Quantum reflection of bright solitary matter waves from a narrow attractive potential (2016)
Journal Article
Marchant, A., Billam, T., Yu, M., Rakonjac, A., Helm, J., Polo, J., …Cornish, S. (2016). Quantum reflection of bright solitary matter waves from a narrow attractive potential. Physical Review A, 93(2), Article 021604(R). https://doi.org/10.1103/physreva.93.021604

We report the observation of quantum reflection from a narrow attractive potential using bright solitary matter waves formed from a Rb 85 Bose-Einstein condensate. We create the attractive potential using a tightly focused, red-detuned laser beam, an... Read More about Quantum reflection of bright solitary matter waves from a narrow attractive potential.

Measuring the disorder of vortex lattices in a Bose-Einstein condensate (2016)
Journal Article
Rakonjac, A., Marchant, A., Billam, T., Helm, J., Yu, M., Gardiner, S., & Cornish, S. (2016). Measuring the disorder of vortex lattices in a Bose-Einstein condensate. Physical Review A, 93(1), Article 013607. https://doi.org/10.1103/physreva.93.013607

We report observations of the formation and subsequent decay of a vortex lattice in a Bose-Einstein condensate confined in a hybrid optical-magnetic trap. Vortices are induced by rotating the anharmonic magnetic potential that provides confinement in... Read More about Measuring the disorder of vortex lattices in a Bose-Einstein condensate.

Superballistic center-of-mass motion in one-dimensional attractive Bose gases: Decoherence-induced Gaussian random walks in velocity space (2016)
Journal Article
Weiss, C., Cornish, S., Gardiner, S., & Breuer, H. (2016). Superballistic center-of-mass motion in one-dimensional attractive Bose gases: Decoherence-induced Gaussian random walks in velocity space. Physical Review A, 93(1), Article 103605. https://doi.org/10.1103/physreva.93.013605

We show that the spreading of the center-of-mass density of ultracold attractively interacting bosons can become superballistic in the presence of decoherence, via one-, two-, and/or three-body losses. In the limit of weak decoherence, we analyticall... Read More about Superballistic center-of-mass motion in one-dimensional attractive Bose gases: Decoherence-induced Gaussian random walks in velocity space.

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