All Outputs (15)

Long-distance optical-conveyor-belt transport of ultracold Cs133 and Rb87 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 Cs133 and Rb87 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 Cs133 and Rb87 atoms.

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.

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., Safronova, M., Bromley, S., & 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.

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.

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.

JILA SrI optical lattice clock with uncertainty of $2.0 \times 10^{-18}$ (2019)
Journal Article
Bothwell, T., Kedar, D., Oelker, E., Robinson, J. M., Bromley, S. L., Tew, W. L., Ye, J., & Kennedy, C. J. (2019). JILA SrI optical lattice clock with uncertainty of $2.0 \times 10^{-18}$. Metrologia, 56(6), Article 065004. https://doi.org/10.1088/1681-7575/ab4089

We report on an improved systematic evaluation of the JILA SrI optical lattice clock, achieving a nearly identical uncertainty compared to the previous strontium record set by the JILA SrII optical lattice clock at . This improves upon the previous e... Read More about JILA SrI optical lattice clock with uncertainty of $2.0 \times 10^{-18}$.

Dynamics of interacting fermions under spin-orbit coupling in an optical lattice clock (2018)
Journal Article
Bromley, S., Kolkowitz, S., Bothwell, T., Kedar, D., Safavi-Naini, A., Wall, M., Salomon, C., Rey, A., & Ye, J. (2018). Dynamics of interacting fermions under spin-orbit coupling in an optical lattice clock. Nature Physics, 14(4), 399-404. https://doi.org/10.1038/s41567-017-0029-0

Quantum statistics and symmetrization dictate that identical fermions do not interact via s-wave collisions. However, in the presence of spin-orbit coupling (SOC), fermions prepared in identical internal states with distinct momenta become distinguis... Read More about Dynamics of interacting fermions under spin-orbit coupling in an optical lattice clock.

Spin-orbit-coupled fermions in an optical lattice clock (2016)
Journal Article
Kolkowitz, S., Bromley, S., Bothwell, T., Wall, M., Marti, G., Koller, A., Zhang, X., Rey, A., & Ye, J. (2017). Spin-orbit-coupled fermions in an optical lattice clock. Nature, 542(7639), 66-70. https://doi.org/10.1038/nature20811

Collective atomic scattering and motional effects in a dense coherent medium (2016)
Journal Article
Bromley, S., Zhu, B., Bishof, M., Zhang, X., Bothwell, T., Schachenmayer, J., Nicholson, T., Kaiser, R., Yelin, S., Lukin, M., Rey, A., & Ye, J. (2016). Collective atomic scattering and motional effects in a dense coherent medium. Nature Communications, 7, Article 11039. https://doi.org/10.1038/ncomms11039

We investigate collective emission from coherently driven ultracold 88Sr atoms. We perform two sets of experiments using a strong and weak transition that are insensitive and sensitive, respectively, to atomic motion at 1 μK. We observe highly direct... Read More about Collective atomic scattering and motional effects in a dense coherent medium.

Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism (2014)
Journal Article
Zhang, X., Bishof, M., Bromley, S., Kraus, C., Safronova, M., Zoller, P., Rey, A., & Ye, J. (2014). Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism. Science, 345(6203), 1467-1473. https://doi.org/10.1126/science.1254978

SU(N) symmetry can emerge in a quantum system with N single-particle spin states when spin is decoupled from interparticle interactions. Taking advantage of the high measurement precision offered by an ultrastable laser, we report a spectroscopic obs... Read More about Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism.

An optical lattice clock with accuracy and stability at the 10−18 level (2014)
Journal Article
Bloom, B., Nicholson, T., Williams, J., Campbell, S., Bishof, M., Zhang, X., Zhang, W., Bromley, S., & Ye, J. (2014). An optical lattice clock with accuracy and stability at the 10−18 level. Nature, 506(7486), 71-75. https://doi.org/10.1038/nature12941

Progress in atomic, optical and quantum science has led to rapid improvements in atomic clocks. At the same time, atomic clock research has helped to advance the frontiers of science, affecting both fundamental and applied research. The ability to co... Read More about An optical lattice clock with accuracy and stability at the 10−18 level.

Holographic power-law traps for the efficient production of Bose-Einstein condensates (2011)
Journal Article
Bruce, G. D., Bromley, S. L., Smirne, G., Torralbo-Campo, L., & Cassettari, D. (2011). Holographic power-law traps for the efficient production of Bose-Einstein condensates. Physical Review A, 84(5), Article 053410. https://doi.org/10.1103/physreva.84.053410

We use a phase-only spatial light modulator to generate light distributions in which the intensity decays as a power law from a central maximum with order ranging from 2 (parabolic) to 0.5. We suggest that a sequence of these can be used as a time-de... Read More about Holographic power-law traps for the efficient production of Bose-Einstein condensates.