Emergence of opposing arrows of time in open quantum systems

Time May Flow Both Ways: Quantum Physics Reveals New Truth

A groundbreaking study from the University of Surrey reveals that time at the quantum level may flow in both directions, as researchers discovered a mathematical “memory kernel” in open quantum systems that maintains time symmetry even when considering energy dissipation into the universe, challenging our conventional understanding of time’s unidirectional nature.

Illustration of quantum geometry for an electronic wavefunction. The sphere is shown as a local approximation to the curvature of the isosurface. Credit: Image courtesy Comin lab, MIT

Measuring Electron Geometry in Quantum Materials

MIT physicists achieved a groundbreaking first-time measurement of electron geometry in solid materials at the quantum level using ARPES technology, opening new possibilities for understanding and manipulating quantum properties of materials for future applications in computing and electronics.

Geometric representation of the principles of nonorthogonal state discrimination.

Experimental investigation of wave-particle duality relations

A groundbreaking experimental study validates both the previously tested quadratic (D2 + V2 ≤ 1) and theoretically predicted linear forms of wave-particle duality relations through asymmetric beam interference and photon polarization measurements, revealing that the quadratic form yields more path information and advancing our understanding of these fundamental quantum principles.