All Outputs (15)

Making molecules by mergoassociation: Two atoms in adjacent nonspherical optical traps (2023)
Journal Article
Bird, R. C., Le Sueur, C. R., & Hutson, J. M. (2023). Making molecules by mergoassociation: Two atoms in adjacent nonspherical optical traps. Physical Review Research, 5(4), https://doi.org/10.1103/physrevresearch.5.043086

Mergoassociation of two ultracold atoms to form a weakly bound molecule can occur when two optical traps that each contain a single atom are merged. Molecule formation occurs at an avoided crossing between a molecular state and the lowest motional st... Read More about Making molecules by mergoassociation: Two atoms in adjacent nonspherical optical traps.

Shielding collisions of ultracold CaF molecules with static electric fields (2023)
Journal Article
Mukherjee, B., Frye, M. D., Le Sueur, C. R., Tarbutt, M. R., & Hutson, J. M. (2023). Shielding collisions of ultracold CaF molecules with static electric fields. Physical Review Research, 5(3), Article 033097. https://doi.org/10.1103/physrevresearch.5.033097

We study collisions of ultracold CaF molecules in strong static electric fields. These fields allow the creation of long-range barriers in the interaction potential, effectively preventing the molecules from reaching the short-range region where inel... Read More about Shielding collisions of ultracold CaF molecules with static electric fields.

Formation of Ultracold Molecules by Merging Optical Tweezers (2023)
Journal Article
Ruttley, D. K., Guttridge, A., Spence, S., Bird, R. C., Le Sueur, C. R., Hutson, J. M., & Cornish, S. L. (2023). Formation of Ultracold Molecules by Merging Optical Tweezers. Physical Review Letters, 130(22), https://doi.org/10.1103/physrevlett.130.223401

We demonstrate the formation of a single RbCs molecule during the merging of two optical tweezers, one containing a single Rb atom and the other a single Cs atom. Both atoms are initially predominantly in the motional ground states of their respectiv... Read More about Formation of Ultracold Molecules by Merging Optical Tweezers.

BOUND and FIELD: Programs for calculating bound states of interacting pairs of atoms and molecules (2019)
Journal Article
Hutson, J. M., & Le Sueur, C. R. (2019). BOUND and FIELD: Programs for calculating bound states of interacting pairs of atoms and molecules. Computer Physics Communications, 241, 1-8. https://doi.org/10.1016/j.cpc.2019.02.017

The bound program calculates the bound states of a complex formed from two interacting particles using coupled-channel methods. It is particularly suitable for the bound states of atom–molecule and molecule–molecule van der Waals complexes and for th... Read More about BOUND and FIELD: Programs for calculating bound states of interacting pairs of atoms and molecules.

MOLSCAT: A program for non-reactive quantum scattering calculations on atomic and molecular collisions (2019)
Journal Article
Hutson, J. M., & Le Sueur, C. R. (2019). MOLSCAT: A program for non-reactive quantum scattering calculations on atomic and molecular collisions. Computer Physics Communications, 241, 9-18. https://doi.org/10.1016/j.cpc.2019.02.014

molscat is a general-purpose program for quantum-mechanical calculations on nonreactive atom– atom, atom–molecule and molecule–molecule collisions. It constructs the coupled-channel equations of atomic and molecular scattering theory, and solves them... Read More about MOLSCAT: A program for non-reactive quantum scattering calculations on atomic and molecular collisions.

Observation of interspecies Feshbach resonances in an ultracold 39K-133Cs mixture and refinement of interaction potentials (2017)
Journal Article
Gröbner, M., Weinmann, P., Kirilov, E., Nägerl, H. .-C., Julienne, P. S., Le Sueur, C. R., & Hutson, J. M. (2017). Observation of interspecies Feshbach resonances in an ultracold 39K-133Cs mixture and refinement of interaction potentials. Physical Review A, 95(2), Article 022715. https://doi.org/10.1103/physreva.95.022715

We observe interspecies Feshbach resonances due to s-wave bound states in ultracold 39K -133Cs scattering for three different spin mixtures. The resonances are observed as joint atom loss and heating of the K sample. We perform least-squares fits to... Read More about Observation of interspecies Feshbach resonances in an ultracold 39K-133Cs mixture and refinement of interaction potentials.

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., Aldegunde, J., Hutson, J. . M., & 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.

Creation of Ultracold 87Rb133Cs Molecules in the Rovibrational Ground State (2014)
Journal Article
Molony, P. K., Gregory, P. D., Ji, Z., Lu, B., Köppinger, M. P., Le Sueur, C. R., Blackley, C. L., Hutson, J. M., & Cornish, S. L. (2014). Creation of Ultracold 87Rb133Cs Molecules in the Rovibrational Ground State. Physical Review Letters, 113(25), Article 255301. https://doi.org/10.1103/physrevlett.113.255301

We report the creation of a sample of over 1000 ultracold Rb 87 Cs 133 molecules in the lowest rovibrational ground state, from an atomic mixture of Rb 87 and Cs 133 , by magnetoassociation on an interspecies Feshbach resonance followed by stimulated... Read More about Creation of Ultracold 87Rb133Cs Molecules in the Rovibrational Ground State.

Ultracold Dense Samples of Dipolar RbCs Molecules in the Rovibrational and Hyperfine Ground State (2014)
Journal Article
Takekoshi, T., Reichsöllner, L., Schindewolf, A., Hutson, J. M., Le Sueur, C. R., Dulieu, O., Ferlaino, F., Grimm, R., & Nägerl, H.-C. (2014). Ultracold Dense Samples of Dipolar RbCs Molecules in the Rovibrational and Hyperfine Ground State. Physical Review Letters, 113, Article 205301. https://doi.org/10.1103/physrevlett.113.205301

We produce ultracold dense trapped samples of Rb87Cs133 molecules in their rovibrational ground state, with full nuclear hyperfine state control, by stimulated Raman adiabatic passage (STIRAP) with efficiencies of 90%. We observe the onset of hyperfi... Read More about Ultracold Dense Samples of Dipolar RbCs Molecules in the Rovibrational and Hyperfine Ground State.

Production of optically trapped 87RbCs Feshbach molecules (2014)
Journal Article
Köppinger, M. P., McCarron, D. J., Jenkin, D. L., Molony, P. K., Cho, H. W., Cornish, S. L., Le Sueur, C. R., Blackley, C. L., & Hutson, J. M. (2014). Production of optically trapped 87RbCs Feshbach molecules. Physical Review A - Atomic, Molecular, and Optical Physics, 89(3), Article 033604. https://doi.org/10.1103/physreva.89.033604

We report the production of Feshbach molecules in a crossed-beam dipole trap. A mixture of and is cooled close to quantum degeneracy before an interspecies Feshbach resonance at 197 G is used to associate up to molecules with a temperature of nK. The... Read More about Production of optically trapped 87RbCs Feshbach molecules.

Generating Mesoscopic Bell States via Collisions of Distinguishable Quantum Bright Solitons (2013)
Journal Article
Gertjerenken, B., Billam, T., Blackley, C., Le Sueur, C., Khaykovich, L., Cornish, S., & Weiss, C. (2013). Generating Mesoscopic Bell States via Collisions of Distinguishable Quantum Bright Solitons. Physical Review Letters, 111(10), Article 100406. https://doi.org/10.1103/physrevlett.111.100406

We investigate numerically the collisions of two distinguishable quantum matter-wave bright solitons in a one-dimensional harmonic trap. We show that such collisions can be used to generate mesoscopic Bell states that can reliably be distinguished fr... Read More about Generating Mesoscopic Bell States via Collisions of Distinguishable Quantum Bright Solitons.

Feshbach resonances in ultracold 85Rb (2013)
Journal Article
Blackley, C. L., Le Sueur, C. R., Hutson, J. M., McCarron, D. J., Köppinger, M. P., Cho, H.-W., Jenkin, D. L., & Cornish, S. L. (2013). Feshbach resonances in ultracold 85Rb. Physical Review A - Atomic, Molecular, and Optical Physics, 87(3), https://doi.org/10.1103/physreva.87.033611

We present 17 experimentally confirmed Feshbach resonances in optically trapped 85Rb. Seven of the resonances are in the ground-state channel (f,mf)=(2,+2)+(2,+2) and nine are in the excited-state channel (2,−2)+(2,−2). We find a wide resonance at hi... Read More about Feshbach resonances in ultracold 85Rb.

Feshbach spectroscopy of an ultracold mixture of Rb-85 and Cs-133 (2013)
Journal Article
Cho, H. W., McCarron, D. J., Koppinger, M. P., Jenkin, D. L., Butler, K. L., Julienne, P. S., Blackley, C. L., Le Sueur, C. R., Hutson, J. M., & Cornish, S. L. (2013). Feshbach spectroscopy of an ultracold mixture of Rb-85 and Cs-133. Physical Review A - Atomic, Molecular, and Optical Physics, 87(1), Article 010703(R). https://doi.org/10.1103/physreva.87.010703

We report the observation of interspecies Feshbach resonances in an optically trapped mixture of 85Rb and 133Cs. We measure nine resonances in the lowest spin channel for a magnetic field range from 0 to 700 G and show that they are in good agreement... Read More about Feshbach spectroscopy of an ultracold mixture of Rb-85 and Cs-133.

Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and the coupled-channel model (2012)
Journal Article
Takekoshi, T., Debatin, M., Rameshan, R., Ferlaino, F., Grimm, R., Nägerl, H.-C., Le Sueur, C. R., Hutson, J. M., Julienne, P. S., Kotochigova, S., & Tiemann, E. (2012). Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and the coupled-channel model. Physical Review A - Atomic, Molecular, and Optical Physics, 85(3), Article 032506. https://doi.org/10.1103/physreva.85.032506

We have studied interspecies scattering in an ultracold mixture of 87Rb and 133Cs atoms, both in their lowest-energy spin states. The three-body loss signatures of 30 incoming s- and p-wave magnetic Feshbach resonances over the range 0 to 667 G have... Read More about Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and the coupled-channel model.