14/09/21: Chiral molecules can be prepared in quantum superpositions of their enantiomers by far-field matter-wave diffraction. To learn more, check out our recent paper in Physical Review X!
03/09/21: Our manuscript on controlling the rotations of charged nanoparticles in quadrupole ion traps appeared in New Journal of Physics! It derives the macromotion potential for a rotating object in a Paul trap and shows how its rotations and centre-of-mass motion can be resistively cooled with an attached circuit.
01/07/21: Our Perspective on Quantum rotations of nanoparticles appeared in Nature Reviews Physics! Check it out if you want learn more about why the intrinsic non-linearity of rigid body rotations offers a great opportunity for quantum experiments.
24/04/21: Our work on cooling nanorotors via elliptic coherent scattering appeared in Physical Review Letters!
It shows how aspherical nanoparticles can be prepared in their combined rotational-translational quantum ground state by trapping them in an elliptically polarised tweezer and dissipating their energy with an optical cavity. See also this article, selected as an Editor’s Suggestion in Physical Review A.
14/12/20: Our article on levitated quantum electromechanics appeared in npj Quantum Information!
It demonstrates how quantum superpositions of charged nanoparticles in a Paul trap can be prepared and observed by coherently interfacing the endcap electrodes with a charge qubit.
31/07/20: Our paper on the quantum version of the tennis racket effect appeared in PRL! It demonstrates that tennis-racket oscillations turn persistent for quantum rotors, and that this effect is observable with nanoparticles and molecules.
22/06/20: Our latest preprint reports the first experimental demonstration of Bragg diffraction of large organic molecules!
09/06/20: Levitating a nanoparticle with an elliptically polarized tweezer inside a high-finesse cavity can cool the rotational and translational motion of the particle into its 6D quantum groundstate.
Today, our preprint Cooling nanorotors by elliptic coherent scattering appeared on the arXiv.
06/05/20: Our manuscript Orbital angular momentum interference of trapped matter waves appeared as a Rapid Communication in Phys. Rev. Research!
A quantum particle confined to a ring geometry can only assume discrete values of the angular momentum. This gives rise to a novel quantum interference effect, allowing geometric phases and interatomic scattering lengths to be determined with high precision.
04/02/20: Our paper Entangling levitated nanoparticles by coherent scattering was published as a Rapid Communication in Phys. Rev. A!
It demonstrates how two nanoscale objects can be entangled by coherent scattering into a common cavity mode. Congratulations Henning!
26/11/19: Had a fun evening at Cafe Scientifique in Harpenden! I talked about macroscopic superposition tests and used the opportunity to play a round of our quantum card game with the audience. Cheers!
16/09/19: Our paper ‘Macroscopicityof quantum mechanical superposition tests via hypothesis falsification‘ appeared in Physical Review A!
In this manuscript, we show how Bayesian hypothesis falsification can be used to quantify how macroscopic a given quantum superposition test is.
27/06/19: Our paper ‘Decoherence of non-relativistic bosonic quantum fields‘ appeared as a Rapid Communication in Physical Review A!
Together with Marduk Bolanos and Klaus Hornberger from the University of Duisburg-Essen we show how to describe the classicalization dynamics of bosonic quantum fields, which will be useful for experiments with continuous degrees of freedom. Thanks for your work Marduk and Klaus!
01/05/19: New preprint ‘Decoherence of non-relativistic bosonic quantum fields’ online! It presents a general Markovian master equation describing the classicalization of non-relativistic bosonic quantum fields. Well done Marduk!