Tag Archive for 'Time crystal'

Träger et al. experimentally demonstrated a driven space-time crystal at room temperature: (a) sketch of the sample with one magnonic permalloy (Py) stripe and a coplanar waveguide; (b) snapshot of a time-resolved scanning transmission X-ray microscopy movie; the gray scale represents the mz component; (c) phase and amplitude map at fcw after FFT in time through each pixel of the scanning transmission X-ray microscopy movie; the color code shows the amplitude and phase information. Image credit: Träger et al., doi: 10.1103/PhysRevLett.126.057201.

Physicists Directly Image Space-Time Crystal

Mar 1, 2021 by News Staff

Space-time crystals are time-periodic self-organized structures postulated by the Nobel laureate in physics Frank Wilczek in 2012. In new research, physicists...

Experimental set-up. Quartz-glass sample container cylinder is filled partially with superfluid 3He-B, leaving a free surface of the superfluid approximately 3 mm above the centre of the surrounding coil system. The space above the free surface is vacuum due to the vanishing vapor pressure of 3He at sub-millikelvin temperatures. Magnons can be trapped in this configuration in two separate locations, in the bulk (colored blue) and touching the free surface (colored red). Transverse NMR coils are used both for RF pumping of magnons into the BECs, and for recording the induced signal from the coherently precessing magnetization M (light yellow arrow). The amplitude of the recorded signal is proportional to βM, the tipping angle of M, and its frequency corresponds to the precession frequency of the condensate. The condensates are trapped by the combined effect of the distribution of the orbital anisotropy axis of the superfluid (green arrows) via spin-orbit coupling, and a minimum of the external magnetic field created using a pinch coil (magenta wire loop). The external field H is oriented along the z axis of the sample container. Image credit: Autti et al, doi: 10.1038/s41563-020-0780-y.

Physicists Observe Quantum Time Crystals Interacting with Each Other

Aug 18, 2020 by News Staff

An international team of physicists has studied the controlled interaction of two spatially separated time crystals. Experimental set-up. Quartz-glass...

Rovny et al looked for a signature of a discrete time crystal in a crystal of monoammonium phosphate. Image credit: Michael Marsland, Yale University.

Researchers Find Signs of ‘Time Crystal’ in Ammonium Dihydrogen Phosphate

May 2, 2018 by News Staff

A team of physicists at Yale University has observed a signature of a discrete time crystal (DTC) in an unexpected place: a crystal of ammonium dihydrogen...

Following a blueprint created by N.Y. Yao et al, University of Maryland physicists made the first time crystal using a one-dimensional chain of ytterbium ions; each ion behaves like an electron spin and exhibits long-range interactions indicated by the arrows. Image credit: J. Zhang et al.

Physicists Unveil ‘Time Crystals’

Jan 27, 2017 by News Staff

Thanks to a breakthrough by a research team led by University of California Berkeley physicist Norman Yao, time crystals are now a reality. Following a...