Search Results - "Hannaford, Peter"
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A decade of time crystals: Quo vadis?
Published in Europhysics letters (01-07-2022)“…Abstract Ten years ago, the new era of time crystals began. Time crystals are systems that behave in the time dimension like ordinary space crystals do in…”
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Creating big time crystals with ultracold atoms
Published in New journal of physics (01-08-2020)“…We investigate the size of discrete time crystals s (ratio of response period to driving period) that can be created for a Bose-Einstein condensate (BEC)…”
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Many-body effects and quantum fluctuations for discrete time crystals in Bose–Einstein condensates
Published in New journal of physics (01-06-2021)“…Abstract We present a fully comprehensive multi-mode quantum treatment based on the truncated Wigner approximation (TWA) to study many-body effects and effects…”
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Condensed matter physics in big discrete time crystals
Published in AAPPS bulletin (02-05-2022)“…We review the application of discrete time crystals created in a Bose-Einstein condensate (BEC) of ultracold atoms bouncing resonantly on an oscillating atom…”
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Magnetic lattices for ultracold atoms and degenerate quantum gases
Published in Science bulletin (Beijing) (01-07-2016)“…We review recent developments in the use of magnetic lattices as a complementary tool to optical lattices for trapping periodic arrays of ultracold atoms and…”
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Reflection and refraction at a time boundary
Published in Nature photonics (01-01-2024)“…Ultracold atoms provide a platform for realizing the temporal analogue of Snell’s law…”
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Time crystal minimizes its energy by performing Sisyphus motion
Published in Proceedings of the National Academy of Sciences - PNAS (17-09-2019)Get full text
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Generation of highly coherent extreme ultraviolet source and its application in diffraction imaging
Published in Results in physics (01-01-2014)“…We report the generation of small bandwidth highly coherent extreme ultraviolet radiation and the application of this source in coherent diffractive…”
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9
John Bryan Willis: 1922–2019
Published in Spectrochimica acta. Part B: Atomic spectroscopy (01-02-2020)Get full text
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Time crystals enter the real world of condensed matter
Published in Physics world (01-03-2020)“…Time crystals break time-translational symmetry rather than spatial symmetry, as ordinary crystals do. Peter Hannaford and Krzysztof Sacha look at how this…”
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Repulsive polarons found
Published in Nature (London) (31-05-2012)“…Quasiparticles known as repulsive polarons are predicted to occur when 'impurity' fermionic particles interact repulsively with a fermionic environment. They…”
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Condensed-matter physics: Repulsive polarons found
Published in Nature (London) (23-05-2012)Get full text
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Extreme ionization of gold atoms
Published in Nature photonics (01-10-2020)“…Gold atoms are stripped of 72 of their electrons to form nitrogen-like Au 72+ ions inside extremely hot plasmas by irradiating gold foils and nanowires with…”
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Nanophotonics for plasma heating
Published in Nature photonics (01-10-2013)“…Vertically aligned nanowires on a solid surface in conjunction with table-top lasers create an ultrahigh-energy-density plasma with extremely high ionization…”
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Plasma physics: Nanophotonics for plasma heating
Published in Nature photonics (01-10-2013)Get full text
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Coherent and collimated blue light generated by four-wave mixing in Rb vapour
Published in Optics express (07-12-2009)“…We investigate frequency up-conversion of low power cw resonant radiation in Rb vapour as a function of various experimental parameters. We present evidence…”
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Phase-matched emission of few high-harmonic orders from a helium gas cell
Published in Applied physics letters (27-04-2009)“…We report on femtosecond-laser-based generation of a few phase-matched high-order harmonics in a helium semi-infinite gas cell. The harmonic beam consists of…”
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Dynamics of free electron wave packets with coherent extreme ultraviolet four-wave mixing fields
Published in Optik (Stuttgart) (01-01-2021)“…We discuss the generation of cascaded extreme ultraviolet four-wave mixing fields with a single-gas-cell configuration and use them to study the dynamics of…”
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Approaching absolute zero
Published in Spectrochimica acta. Part B: Atomic spectroscopy (01-02-2008)“…We start with a brief background to the field of ultracold atoms and degenerate quantum gases and then review research in this field currently in progress in…”
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Spectrum modification of XUV radiation in the presence of a delayed weak control field
Published in Journal of modern optics (29-07-2019)“…We use a delayed weak laser beam to control the spectral features of extreme ultraviolet (XUV) pulses generated by a strong femtosecond laser beam through…”
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