Search results for time reversal symmetry

Quantum Physics Jul 8, 2024

Researchers realize time reversal through input-output indefiniteness

A research team has constructed a coherent superposition of quantum evolution with two opposite directions in a photonic system and confirmed its advantage in characterizing input-output indefiniteness. The study was published ...

Optics & Photonics Jul 25, 2024

Nonreciprocal interactions go nonlinear: Non-Hermitian dynamics observed in coupled nanoparticles

Using two optically-trapped glass nanoparticles, researchers observed a novel collective Non-Hermitian and non-linear dynamic driven by non-reciprocal interactions. This contribution expands traditional optical levitation ...

General Physics May 22, 2024

Nuclear physicists make first precision measurements of radium monofluoride

For the first time, nuclear physicists have made precision measurements of a short-lived radioactive molecule, radium monofluoride (RaF). In their study published in the journal Nature Physics, the researchers combined ion-trapping ...

Optics & Photonics May 14, 2024

Scientists create an 'optical conveyor belt' for quasiparticles

Using interference between two lasers, a research group led by scientists from RIKEN and NTT Research have created an "optical conveyor belt" that can move polaritons—a type of light-matter hybrid particle—in semiconductor-based ...

Quantum Physics Jun 8, 2024

Nonreciprocal quantum batteries exhibit remarkable capacities and efficiency

In physics, nonreciprocity occurs when a system's response varies depending on the direction in which waves or signals are propagating within it. This asymmetry arises from a break in so-called time-reversal symmetry, which ...

Optics & Photonics Jun 19, 2024

The design of a photonic alloy with topological properties

Photonic alloys, alloy-like materials combining two or more photonic crystals, are promising candidates for the development of structures that control the propagation of electromagnetic waves, also known as waveguides. Despite ...

General Physics Jun 4, 2024

New model suggests partner anti-universe could explain accelerated expansion without the need for dark energy

The accelerated expansion of the present universe, believed to be driven by a mysterious dark energy, is one of the greatest puzzles in our understanding of the cosmos. The standard model of cosmology called Lambda-CDM, explains ...

Plants & Animals May 30, 2024

Sea urchins made to order: Scientists make transgenic breakthrough

Consider the sea urchin. Specifically, the painted urchin: Lytechinus pictus, a prickly Ping-Pong ball from the eastern Pacific Ocean.

Optics & Photonics Jun 28, 2024

Updating the textbook on polarization in gallium nitride to optimize wide bandgap semiconductors

An updated model reconciles the gap between recent experiments and theory concerning polarization in wurtzite semiconductors—paving the way for the development of smaller, faster and more efficient electronic devices, according ...

General Physics Jun 17, 2020

Simultaneous nodal superconductivity and broken time-reversal symmetry in CaPtAs

In the vast majority of superconducting materials, Cooper pairs have what is known as even parity, which essentially means that their wave function does not change when electrons swap spatial coordinates. Conversely, some ...

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