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Controlling the ac Stark effect of RbCs with dc electric and magnetic fields (2020)
Journal Article
Blackmore, J. A., Sawant, R., Gregory, P. D., Bromley, S. L., Aldegunde, J., Hutson, J. M., & Cornish, S. L. (2020). Controlling the ac Stark effect of RbCs with dc electric and magnetic fields. Physical Review A, 102(5), Article 053316. https://doi.org/10.1103/physreva.102.053316

We investigate the effects of static electric and magnetic fields on the differential ac Stark shifts for microwave transitions in ultracold bosonic 87Rb133Cs molecules, for light of wavelength λ=1064nm. Near this wavelength we observe unexpected two... Read More about Controlling the ac Stark effect of RbCs with dc electric and magnetic fields.

Coherent Manipulation of the Internal State of Ultracold 87Rb133Cs Molecules with Multiple Microwave Fields (2020)
Journal Article
Blackmore, J., Gregory, P., Bromley, S., & Cornish, S. (2020). Coherent Manipulation of the Internal State of Ultracold 87Rb133Cs Molecules with Multiple Microwave Fields. Physical Chemistry Chemical Physics, 47(22), 27529-27538. https://doi.org/10.1039/d0cp04651e

We explore coherent multi-photon processes in 87Rb133Cs molecules using 3-level lambda and ladder configurations of rotational and hyperfine states, and discuss their relevance to future applications in quantum computation and quantum simulation. In... Read More about Coherent Manipulation of the Internal State of Ultracold 87Rb133Cs Molecules with Multiple Microwave Fields.

Prospects of Forming High-Spin Polar Molecules from Ultracold Atoms (2020)
Journal Article
Frye, M. D., Cornish, S. L., & Hutson, J. M. (2020). Prospects of Forming High-Spin Polar Molecules from Ultracold Atoms. Physical Review X, 10(4), Article 041005. https://doi.org/10.1103/physrevx.10.041005

We investigate Feshbach resonances in collisions of high-spin atoms such as Er and Dy with closed-shell atoms such as Sr and Yb, using coupled-channel scattering and bound-state calculations. We consider both low-anisotropy and high-anisotropy limits... Read More about Prospects of Forming High-Spin Polar Molecules from Ultracold Atoms.

Robust entangling gate for polar molecules using magnetic and microwave fields (2020)
Journal Article
Hughes, M., Frye, M. D., Sawant, R., Bhole, G., Jones, J. A., Cornish, S. L., …Mur-Petit, J. (2020). Robust entangling gate for polar molecules using magnetic and microwave fields. Physical Review A, 101(6), Article 062308. https://doi.org/10.1103/physreva.101.062308

Polar molecules are an emerging platform for quantum technologies based on their long-range electric dipole–dipole interactions, which open new possibilities for quantum information processing and the quantum simulation of strongly correlated systems... Read More about Robust entangling gate for polar molecules using magnetic and microwave fields.

Loss of ultracold 87Rb133Cs molecules via optical excitation of long-lived two-body collision complexes (2020)
Journal Article
Gregory, P., Blackmore, J., Bromley, S., & Cornish, S. (2020). Loss of ultracold 87Rb133Cs molecules via optical excitation of long-lived two-body collision complexes. Physical Review Letters, 124(16), Article 163402. https://doi.org/10.1103/physrevlett.124.163402

We show that the lifetime of ultracold ground-state 87Rb133Cs molecules in an optical trap is limited by fast optical excitation of long-lived two-body collision complexes. We partially suppress this loss mechanism by applying square-wave modulation... Read More about Loss of ultracold 87Rb133Cs molecules via optical excitation of long-lived two-body collision complexes.

Splitting and recombination of bright-solitary-matter waves (2020)
Journal Article
Wales, O. J., Rakonjac, A., Billam, T. P., Helm, J. L., Gardiner, S. A., & Cornish, S. L. (2020). Splitting and recombination of bright-solitary-matter waves. Communications Physics, 3, Article 51. https://doi.org/10.1038/s42005-020-0320-8

Atomic Bose–Einstein condensates confined in quasi-1D waveguides can support bright-solitary-matter waves when interatomic interactions are sufficiently attractive to cancel dispersion. Such solitary-matter waves are excellent candidates for highly s... Read More about Splitting and recombination of bright-solitary-matter waves.

Ultracold polar molecules as qudits (2020)
Journal Article
Sawant, R., Blackmore, J., Gregory, P., Mur-Petit, J., Jaksch, D., Aldegunde, J., …Cornish, S. L. (2020). Ultracold polar molecules as qudits. New Journal of Physics, 22, Article 013027. https://doi.org/10.1088/1367-2630/ab60f4

We discuss how the internal structure of ultracold molecules, trapped in the motional ground state of optical tweezers, can be used to implement qudits. We explore the rotational, fine and hyperfine structure of $^{40}$Ca$^{19}$F and $^{87}$Rb$^{133}... Read More about Ultracold polar molecules as qudits.

Magnetic Feshbach resonances in ultracold collisions between Cs and Yb atoms (2019)
Journal Article
Yang, B., Frye, M. D., Guttridge, A., Aldegunde, J., Żuchowski, P. S., Cornish, S. L., & Hutson, J. M. (2019). Magnetic Feshbach resonances in ultracold collisions between Cs and Yb atoms. Physical Review A, 100(2), Article 022704. https://doi.org/10.1103/physreva.100.022704

We investigate magnetically tunable Feshbach resonances in ultracold collisions between ground-state Yb and Cs atoms, using coupled-channel calculations based on an interaction potential recently determined from photoassociation spectroscopy. We pred... Read More about Magnetic Feshbach resonances in ultracold collisions between Cs and Yb atoms.

Sticky collisions of ultracold RbCs molecules (2019)
Journal Article
Gregory, P. D., Frye, M. D., Blackmore, J. A., Bridge, E. M., Sawant, R., Hutson, J. M., & Cornish, S. L. (2019). Sticky collisions of ultracold RbCs molecules. Nature Communications, 10(1), Article 3104. https://doi.org/10.1038/s41467-019-11033-y

Understanding and controlling collisions is crucial to the burgeoning field of ultracold molecules. All experiments so far have observed fast loss of molecules from the trap. However, the dominant mechanism for collisional loss is not well understood... Read More about Sticky collisions of ultracold RbCs molecules.

Ultracold molecules for quantum simulation: rotational coherence in CaF and RbCs (2018)
Journal Article
Blackmore, J. A., Caldwell, L., Gregory, P. D., Bridge, E. M., Sawant, R., Aldegunde, J., …Cornish, S. L. (2018). Ultracold molecules for quantum simulation: rotational coherence in CaF and RbCs. Quantum Science and Technology, 4(1), Article 014010. https://doi.org/10.1088/2058-9565/aaee35

Polar molecules offer a new platform for quantum simulation of systems with long-range interactions, based on the electrostatic interaction between their electric dipole moments. Here, we report the development of coherent quantum state control using... Read More about Ultracold molecules for quantum simulation: rotational coherence in CaF and RbCs.