Nature Search

A search for varying fundamental constants using hertz-level frequency measurements of cold CH molecules

Some theories predict that fundamental constants may depend on time, position or the local density of matter. Truppe et al.compare new precise frequency measurements of microwave transitions in cold CH with Milky Way data, placing a new limit on variation in the fine structure constant.

S. Truppe
R.J. Hendricks
M.R. Tarbutt
ResearchOpen Access15 Oct 2013
Nature Communications

Volume: 4, P: 1-7
Improved measurement of the shape of the electron

J. J. Hudson
D. M. Kara
E. A. Hinds
Research25 May 2011
Nature

Volume: 473, P: 493-496
Molecules cooled below the Doppler limit

Magneto-optical trapping and sub-Doppler cooling of atoms has been instrumental for research in ultracold atomic physics. This regime has now been reached for a molecular species, CaF.

S. Truppe
H. J. Williams
M. R. Tarbutt
Research28 Aug 2017
Nature Physics

Volume: 13, P: 1173-1176
A terahertz-driven non-equilibrium phase transition in a room temperature atomic vapour

The nonlinear interaction between terahertz frequency electric fields and atoms or molecules can be used to study fundamental and technical problems. Here the authors demonstrate a THz–driven phase transition, with a potential application as a THz sensor, using Rydberg atomic states in a cesium vapor.

C. G. Wade
M. Marcuzzi
K. J. Weatherill
ResearchOpen Access03 Sept 2018
Nature Communications

Volume: 9, P: 1-7
Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar molecules

Coherence between rotational states of polar molecules has previously been limited by light shifts in optical traps. A magic-wavelength trap is able to maximize the coherence time and enables the observation of tunable dipolar interactions.

Philip D. Gregory
Luke M. Fernley
Simon L. Cornish
ResearchOpen Access17 Jan 2024
Nature Physics

Volume: 20, P: 415-421
Robust storage qubits in ultracold polar molecules

The hyperfine states of ultracold polar molecules are a strong candidate for storing quantum information. Identifying and eliminating all detectable causes of decoherence has extended the qubit coherence time beyond 5.6 s in RbCs molecules.

Philip D. Gregory
Jacob A. Blackmore
Simon L. Cornish
Research09 Sept 2021
Nature Physics

Volume: 17, P: 1149-1153
Real-time near-field terahertz imaging with atomic optical fluorescence

A time-averaged intensity distribution of terahertz waves is imaged by converting terahertz waves to optical fluorescence. The conversion becomes possible by exciting Cs atoms to a Rydberg state. The image acquisition time is 40 ms.

C. G. Wade
N. Šibalić
K. J. Weatherill
Research07 Nov 2016
Nature Photonics

Volume: 11, P: 40-43
Comparability of methods assigning monetary costs to diets: derivation from household till receipts versus cost database estimation using 4-day food diaries

K A Timmins
M A Morris
J E Cade
Research11 Sept 2013
European Journal of Clinical Nutrition

Volume: 67, P: 1072-1076

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