All Outputs (99)

Ultralong-range Cs-RbCs Rydberg molecules: Nonadiabaticity of dipole moments (2024)
Journal Article
Mellado-Alcedo, D., Guttridge, A., Cornish, S. L., Sadeghpour, H. R., & González-Férez, R. (2024). Ultralong-range Cs-RbCs Rydberg molecules: Nonadiabaticity of dipole moments. Physical Review A, 110(1), Article 013314. https://doi.org/10.1103/physreva.110.013314

We consider ultralong-range polyatomic Rydberg molecules formed by combining a Rydberg cesium atom and a ground-state RbCs molecule. We explore the regime where the charge-dipole interaction due to the Rydberg electron with the diatomic polar molecul... Read More about Ultralong-range Cs-RbCs Rydberg molecules: Nonadiabaticity of dipole moments.

Quantum computation and quantum simulation with ultracold molecules (2024)
Journal Article
Cornish, S. L., Tarbutt, M. R., & Hazzard, K. R. A. (2024). Quantum computation and quantum simulation with ultracold molecules. Nature Physics, 20(5), 730-740. https://doi.org/10.1038/s41567-024-02453-9

Ultracold molecules confined in optical lattices or tweezer traps can be used to process quantum information and simulate the behaviour of many-body quantum systems. Molecules offer several advantages for these applications. They have a large set of... Read More about Quantum computation and quantum simulation with ultracold molecules.

Enhanced Quantum Control of Individual Ultracold Molecules Using Optical Tweezer Arrays (2024)
Journal Article
Ruttley, D. K., Guttridge, A., Hepworth, T. R., & Cornish, S. L. (2024). Enhanced Quantum Control of Individual Ultracold Molecules Using Optical Tweezer Arrays. PRX Quantum, 5(2), Article 020333. https://doi.org/10.1103/prxquantum.5.020333

Control over the quantum states of individual molecules is crucial in the quest to harness their rich internal structure and dipolar interactions for applications in quantum science. In this paper, we develop a toolbox of techniques for the control a... Read More about Enhanced Quantum Control of Individual Ultracold Molecules Using Optical Tweezer Arrays.

Modulation transfer spectroscopy of the D1 transition of potassium: theory and experiment (2024)
Journal Article
Innes, A. D., Majumder, P., Noh, H. R., & Cornish, S. L. (2024). Modulation transfer spectroscopy of the D1 transition of potassium: theory and experiment. Journal of Physics B: Atomic, Molecular and Optical Physics, 57(7), Article 075401. https://doi.org/10.1088/1361-6455/ad31af

We report on a study of modulation transfer spectroscopy of the 4S1/2 → 4P1/2 (D1) transition of naturally abundant potassium in a room-temperature vapour cell. This transition is critical for laser cooling and optical pumping of potassium and our st... Read More about Modulation transfer spectroscopy of the D1 transition of potassium: theory and experiment.

Long-distance optical-conveyor-belt transport of ultracold 133 Cs and 87 Rb atoms (2024)
Journal Article
Matthies, A. J., Mortlock, J. M., McArd, L. A., Raghuram, A. P., Innes, A. D., Bromley, S. L., & Cornish, S. L. (2024). Long-distance optical-conveyor-belt transport of ultracold 133 Cs and 87 Rb atoms. Physical Review A, 109(2), Article 023321. https://doi.org/10.1103/physreva.109.023321

We report on the transport of a thermal cloud of ultracold cesium and rubidium atoms over about 37 cm in under 25 ms using an optical conveyor belt formed by two counterpropagating beams with a controllable frequency difference that generate a movabl... Read More about Long-distance optical-conveyor-belt transport of ultracold 133 Cs and 87 Rb atoms.

Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar molecules (2024)
Journal Article
Gregory, P. D., Fernley, L. M., Tao, A. L., Bromley, S. L., Stepp, J., Zhang, Z., …Cornish, S. L. (2024). Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar molecules. Nature Physics, 20(3), 415-421. https://doi.org/10.1038/s41567-023-02328-5

Ultracold polar molecules combine a rich structure of long-lived internal states with access to controllable long-range anisotropic dipole–dipole interactions. In particular, the rotational states of polar molecules confined in optical tweezers or op... Read More about Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar molecules.

An association sequence suitable for producing ground-state RbCs molecules in optical lattices (2023)
Journal Article
Das, A., Gregory, P. D., Takekoshi, T., Fernley, L., Landini, M., Hutson, J. M., …Nägerl, H. (2023). An association sequence suitable for producing ground-state RbCs molecules in optical lattices. SciPost Physics, 15(6), Article 220. https://doi.org/10.21468/SciPostPhys.15.6.220

Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar molecule (2023)
Journal Article
Guttridge, A., Ruttley, D., Baldock, A., González-Férez, R., Sadeghpour, H., Adams, C., & Cornish, S. (2023). Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar molecule. Physical Review Letters, 131(1), Article 013401. https://doi.org/10.1103/PhysRevLett.131.013401

We demonstrate Rydberg blockade due to the charge-dipole interaction between a single Rb atom and a single RbCs molecule confined in optical tweezers. The molecule is formed by magnetoassociation of a Rb+Cs atom pair and subsequently transferred to t... Read More about Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar molecule.

A motorized rotation mount for the switching of an optical beam path in under 20 ms using polarization control (2023)
Journal Article
Raghuram, A. P., Mortlock, J. M., Bromley, S. L., & Cornish, S. L. (2023). A motorized rotation mount for the switching of an optical beam path in under 20 ms using polarization control. Review of Scientific Instruments, 94(6), https://doi.org/10.1063/5.0139647

We present a simple motorized rotation mount for a half-wave plate that can be used to rapidly change the polarization of light. We use the device to switch a high power laser beam between different optical dipole traps in an ultracold atom experimen... Read More about A motorized rotation mount for the switching of an optical beam path in under 20 ms using polarization control.

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.

Feshbach Spectroscopy of Cs Atom Pairs in Optical Tweezers (2022)
Journal Article
Brooks, R. V., Guttridge, A., Frye, M. D., Ruttley, D. K., Spence, S., Hutson, J. M., & Cornish, S. L. (2022). Feshbach Spectroscopy of Cs Atom Pairs in Optical Tweezers. New Journal of Physics, 24, Article 113051. https://doi.org/10.1088/1367-2630/ac99f6

We prepare pairs of 133Cs atoms in a single optical tweezer and perform Feshbach spectroscopy for collisions of atoms in the states (f = 3, mf = ±3). We detect enhancements in pair loss using a detection scheme where the optical tweezers are repeated... Read More about Feshbach Spectroscopy of Cs Atom Pairs in Optical Tweezers.

Observation of magnetic Feshbach resonances between Cs and 173Yb (2022)
Journal Article
Franzen, T., Guttridge, A., Wilson, K. E., Segal, J., Frye, M. D., Hutson, J. M., & Cornish, S. L. (2022). Observation of magnetic Feshbach resonances between Cs and 173Yb. Physical Review Research, 4(4), Article 043072. https://doi.org/10.1103/physrevresearch.4.043072

We report the observation of magnetic Feshbach resonances between 173 Yb and 133 Cs . In a mixture of Cs atoms prepared in the ( f = 3 , m f = 3 ) state and unpolarized fermionic 173 Yb , we observe resonant atom loss due to two sets of magnetic Fesh... Read More about Observation of magnetic Feshbach resonances between Cs and 173Yb.

Preparation of 87Rb and 133Cs in the motional ground state of a single optical tweezer (2022)
Journal Article
Spence, S., Brooks, R., Ruttley, D., Guttridge, A., & Cornish, S. (2022). Preparation of 87Rb and 133Cs in the motional ground state of a single optical tweezer. New Journal of Physics, 24, https://doi.org/10.1088/1367-2630/ac95b9

We report simultaneous Raman sideband cooling of a single 87Rb atom and a single 133Cs atom held in separate optical tweezers at 814 nm and 938 nm, respectively. Starting from outside the Lamb-Dicke regime, after 45 ms of cooling we measure probabili... Read More about Preparation of 87Rb and 133Cs in the motional ground state of a single optical tweezer.

Diatomic-py: A Python module for calculating the rotational and hyperfine structure of 1Σ molecules (2022)
Journal Article
Blackmore, J. A., Gregory, P. D., Hutson, J. M., & Cornish, S. L. (2023). Diatomic-py: A Python module for calculating the rotational and hyperfine structure of 1Σ molecules. Computer Physics Communications, 282, Article 108512. https://doi.org/10.1016/j.cpc.2022.108512

We present a computer program to calculate the quantised rotational and hyperfine energy levels of diatomic molecules in the presence of dc electric, dc magnetic, and off-resonant optical fields. Our program is applicable to the bialkali molecules us... Read More about Diatomic-py: A Python module for calculating the rotational and hyperfine structure of 1Σ molecules.

Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules (2021)
Journal Article
Gregory, P. D., Blackmore, J. A., Frye, M. D., Fernley, L. M., Bromley, S. L., Hutson, J. M., & Cornish, S. L. (2021). Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules. New Journal of Physics, 23, Article 125004. https://doi.org/10.1088/1367-2630/ac3c63

Understanding ultracold collisions involving molecules is of fundamental importance for current experiments, where inelastic collisions typically limit the lifetime of molecular ensembles in optical traps. Here we present a broad study of optically t... Read More about Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules.

Measurement of the tune-out wavelength for 133Cs at 880nm (2021)
Journal Article
Ratkata, A., Gregory, P., Innes, A., Matthies, J., McArd, L., Mortlock, J., …Cornish, S. (2021). Measurement of the tune-out wavelength for 133Cs at 880nm. Physical Review A, 104(5), Article 052813. https://doi.org/10.1103/physreva.104.052813

We perform a measurement of the tune-out wavelength, λ 0 , between the D 1 , 6 2 S 1 / 2 → 6 2 P 1 / 2 , and D 2 , 6 2 S 1 / 2 → 6 2 P 3 / 2 , transitions for 133 Cs in the ground hyperfine state ( F = 3 , m F = + 3 ) . At λ 0 , the frequency-depende... Read More about Measurement of the tune-out wavelength for 133Cs at 880nm.

Robust storage qubits in ultracold polar molecules (2021)
Journal Article
Gregory, P. D., Blackmore, J. A., Bromley, S. L., Hutson, J. M., & Cornish, S. L. (2021). Robust storage qubits in ultracold polar molecules. Nature Physics, 17(10), 1149-1153. https://doi.org/10.1038/s41567-021-01328-7

Quantum states with long-lived coherence are essential for quantum computation, simulation and metrology. The nuclear spin states of ultracold molecules prepared in the singlet rovibrational ground state are an excellent candidate for encoding and st... Read More about Robust storage qubits in ultracold polar molecules.

Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions (2021)
Journal Article
Wilson, K., Guttridge, A., Liu, I., Segal, J., Billam, T., Parker, N., …Cornish, S. (2021). Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions. Physical Review Research, 3(3), Article 033096. https://doi.org/10.1103/physrevresearch.3.033096

We probe the collective dynamics of a quantum degenerate Bose-Bose mixture of 133Cs and 174Yb with attractive interspecies interactions. Specifically, we excite vertical center-of-mass oscillations of the Cs condensate. We observe significant damping... Read More about Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions.

Preparation of one 87Rb and one 133Cs atom in a single optical tweezer (2021)
Journal Article
Brooks, R. V., Spence, S., Guttridge, A., Alampounti, A., Rakonjac, A., McArd, L. A., …Cornish, S. L. (2021). Preparation of one 87Rb and one 133Cs atom in a single optical tweezer. New Journal of Physics, 23, Article 065002. https://doi.org/10.1088/1367-2630/ac0000

We report the preparation of exactly one 87Rb atom and one133Cs atom in the same optical tweezer as the essential first step towards the construction of a tweezer array of individually trapped 87Rb133Cs molecules. Through careful selection of the twe... Read More about Preparation of one 87Rb and one 133Cs atom in a single optical tweezer.

Magic conditions for multiple rotational states of bialkali molecules in optical lattices (2021)
Journal Article
Guan, Q., Cornish, S. L., & Kotochigova, S. (2021). Magic conditions for multiple rotational states of bialkali molecules in optical lattices. Physical Review A, 103(4), https://doi.org/10.1103/physreva.103.043311

We investigate magic-wavelength trapping of ultracold bialkali molecules in the vicinity of weak optical transitions from the vibrational ground state of the X 1 Σ + potential to low-lying rovibrational states of the b 3 Π 0 potential, focusing our d... Read More about Magic conditions for multiple rotational states of bialkali molecules in optical lattices.