Zobrazeno 1 - 10
of 372
pro vyhledávání: '"Parker, Colin"'
Optically active defects in solid-state systems have many applications in quantum information and sensing. However, unlike free atoms, which have fixed optical transition frequencies, the inhomogeneous broadening of the transitions in solid-state env
Externí odkaz:
http://arxiv.org/abs/2309.02688
We place a molecular Bose-Einstein condensate in a 1D shaken lattice with a Floquet-engineered dispersion, and observe the dynamics in both position and momentum space. At the initial condition of zero momentum, our engineered dispersion is inverted,
Externí odkaz:
http://arxiv.org/abs/2304.07423
Publikováno v:
Phys. Rev. Lett. 126, 153402 (2021)
Ultracold atomic Fermi gases can be tuned to interact strongly, where they display spectroscopic signatures above the superfluid transition reminiscent of the pseudogap in cuprates. However, the extent of the analogy can be questioned, since thermody
Externí odkaz:
http://arxiv.org/abs/2011.05256
Many powerful imaging techniques for cold atoms are based on determining the optical density by comparing a beam image having passed through the atom cloud to a reference image taken under similar conditions with no atoms. In practice the beam profil
Externí odkaz:
http://arxiv.org/abs/2004.08498
Autor:
Parker, Colin M.
The flow surrounding a scaled model vertical-axis wind turbine (VAWT) at realistic operating conditions was studied. The model closely matches geometric and dynamic properties—tip-speed ratio and Reynolds number—of a full-size turbine. The flowfi
Externí odkaz:
http://pqdtopen.proquest.com/#viewpdf?dispub=10687173
Publikováno v:
Phys. Rev. A 99, 022505 (2019)
We investigate the 1140 nm magnetic dipole transition of thulium atoms trapped in solid argon and neon. These solids can be straightforwardly grown on any substrate at cryogenic temperatures, making them prime targets for surface sensing applications
Externí odkaz:
http://arxiv.org/abs/1901.07630
Publikováno v:
Phys. Rev. A 98, 043626 (2018)
We present an all-optical method for achieving molecular Bose-Einstein condensates of ${}^6\textrm{Li}$. We demonstrate this with mixtures in the lowest two (1-2), and second lowest two (2-3) hyperfine states. For the 1-2 mixture, we can achieve cond
Externí odkaz:
http://arxiv.org/abs/1809.06465
Autor:
Parker, Matt, Parker, Colin
Given a training set with binary classification, the Support Vector Machine identifies the hyperplane maximizing the margin between the two classes of training data. This general formulation is useful in that it can be applied without regard to varia
Externí odkaz:
http://arxiv.org/abs/1702.02555
Autor:
Sievers, Franz, Kretzschmar, Norman, Fernandes, Diogo Rio, Suchet, Daniel, Rabinovic, Michael, Wu, Saijun, Parker, Colin V., Khaykovich, Lev, Salomon, Christophe, Chevy, Frédéric
We report on simultaneous sub-Doppler laser cooling of fermionic $^6$Li and $^{40}$K using the D$_1$ optical transitions. We compare experimental results to a numerical simulation of the cooling process applying a semi-classical Monte Carlo wavefunct
Externí odkaz:
http://arxiv.org/abs/1410.8545
Publikováno v:
Phys. Rev. Lett. 114, 055301 (2015)
We present experimental evidence showing that an interacting Bose condensate in a shaken optical lattice develops a roton-maxon excitation spectrum, a feature normally associated with superfluid helium. The roton-maxon feature originates from the dou
Externí odkaz:
http://arxiv.org/abs/1407.7157