Zobrazeno 1 - 10
of 576
pro vyhledávání: '"Caldwell, L"'
Autor:
Jurgilas, S., Chakraborty, A., Rich, C. J. H., Caldwell, L., Williams, H. J., Fitch, N. J., Sauer, B. E., Frye, Matthew D., Hutson, Jeremy M., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Lett. 126, 153401 (2021)
We prepare mixtures of ultracold CaF molecules and Rb atoms in a magnetic trap and study their inelastic collisions. When the atoms are prepared in the spin-stretched state and the molecules in the spin-stretched component of the first rotationally e
Externí odkaz:
http://arxiv.org/abs/2101.01580
Autor:
Caldwell, L., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Research 3, 013291 (2021)
State-dependent optical tweezers can be used to trap a pair of molecules with a separation much smaller than the wavelength of the trapping light, greatly enhancing the dipole-dipole interaction between them. Here we describe a general approach to pr
Externí odkaz:
http://arxiv.org/abs/2012.10346
Autor:
Caldwell, L., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Lett. 125, 243201 (2020)
We show how state-dependent optical potentials can be used to trap a pair of molecules in different internal states at a separation much smaller than the wavelength of the trapping light. This close spacing greatly enhances the dipole-dipole interact
Externí odkaz:
http://arxiv.org/abs/2007.03296
Autor:
Caldwell, L., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Research 2, 013251 (2020)
Sideband cooling is a popular method for cooling atoms to the ground state of an optical trap. Applying the same method to molecules requires a number of challenges to be overcome. Strong tensor Stark shifts in molecules cause the optical trapping po
Externí odkaz:
http://arxiv.org/abs/1910.10689
Autor:
Caldwell, L., Williams, H. J., Fitch, N. J., Aldegunde, J., Hutson, Jeremy M., Sauer, B. E., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Lett. 124, 063001 (2020)
Polar molecules in superpositions of rotational states exhibit long-range dipolar interactions, but maintaining their coherence in a trapped sample is a challenge. We present calculations that show many laser-coolable molecules have convenient rotati
Externí odkaz:
http://arxiv.org/abs/1908.11839
Autor:
Caldwell, L., Devlin, J. A., Williams, H. J., Fitch, N. J., Hinds, E. A., Sauer, B. E., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Lett. 123, 033202 (2019)
We introduce a scheme for deep laser cooling of molecules based on robust dark states at zero velocity. By simulating this scheme, we show it to be a widely applicable method that can reach the recoil limit or below. We demonstrate and characterise t
Externí odkaz:
http://arxiv.org/abs/1812.07926
Autor:
Williams, H. J., Caldwell, L., Fitch, N. J., Truppe, S., Rodewald, J., Hinds, E. A., Sauer, B. E., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Lett. 120, 163201 (2018)
We demonstrate coherent microwave control of the rotational, hyperfine and Zeeman states of ultracold CaF molecules, and the magnetic trapping of these molecules in a single, selectable quantum state. We trap about $5\times 10^{3}$ molecules for 2 s
Externí odkaz:
http://arxiv.org/abs/1711.07355
Autor:
Williams, H. J., Truppe, S., Hambach, M., Caldwell, L., Fitch, N. J., Hinds, E. A., Sauer, B. E., Tarbutt, M. R.
We present the properties of a magneto-optical trap (MOT) of CaF molecules. We study the process of loading the MOT from a decelerated buffer-gas-cooled beam, and how best to slow this molecular beam in order to capture the most molecules. We determi
Externí odkaz:
http://arxiv.org/abs/1706.07848
Autor:
Truppe, S., Williams, H. J., Hambach, M., Caldwell, L., Fitch, N. J., Hinds, E. A., Sauer, B. E., Tarbutt, M. R.
The ability to cool atoms below the Doppler limit -- the minimum temperature reachable by Doppler cooling -- has been essential to most experiments with quantum degenerate gases, optical lattices and atomic fountains, among many other applications. A
Externí odkaz:
http://arxiv.org/abs/1703.00580