Experimental entanglement of four particles

Experimental entanglement of four particles

Quantum mechanics allows for many-particle wavefunctions that cannot be factorized into a product of single-particle wavefunctions, even when the constituent particles are entirely distinct. Such ‘entangled’ states explicitly demonstrate the non-local character of quantum theory1, having potential applications in high-precision spectroscopy2, quantum communication, cryptography and computation3. In general, the more particles that can be entangl…

Meet the Quadruplon: Scientists Discover a New Four-Body Quantum Particle

Scientists have discovered a new four-body quasi-particle, the quadruplon, in a 2D semiconductor. Using laser experiments and advanced theory, they identified unique spectral features unexplained by existing models, confirming the quadruplon’s existence. A central goal of physics is to understand why different materials exhibit specific properties, such as electrical, optical, thermal, or magnetic behavior. These [...]