In contrast to the widespread discretization sequence, first space then time, the reversed sequence first time then space is employed.
Indeed, a single Dirac degeneracy is not sufficient to obtain topological properties in a time-reversal invariant system and the presence of degenerate time-reversed Kramers pairs is also required, or in other words, the band structure should feature two overlapped, time-reversed Dirac cones, as those obtained in Fig. 1d.
A physicist would describe the device as a "time-reversed" laser, since the symmetrical properties are related to the concept of time reversal.
Rather than emitting light, a time-reversed laser absorbs it.
Chong, Y. D., Ge, L., Cao, H. & Stone, A. D. Coherent perfect absorbers: Time-reversed lasers.
Not only is it possible to make black holes in this way but also their time-reversed equivalents white holes.
Liu, Y. et al. Optical focusing deep inside dynamic scattering media with near-infrared time-reversed ultrasonically encoded (TRUE) light.
Subsequent analyses compared the efficacy of the A-chirp to linear, time-reversed and amplitude-reversed chirps and confirmed that the A-chirp was most effective chirp configuration.
We instead propose time-reversed rigid body integrators that can sample possible solutions when unique ones do not exist.
Wang, Y. M., Judkewitz, B., Dimarzio, C. A. & Yang, C. Deep-tissue focal fluorescence imaging with digitally time-reversed ultrasound-encoded light.
Jang, M., Ruan, H., Judkewitz, B. & Yang, C. Model for estimating the penetration depth limit of the time-reversed ultrasonically encoded optical focusing technique.
