量子时间旅行

Physicists have successfully measured 'negative time' in a quantum experiment where photons appear to exit a material before they even finish entering it. 五月 06, 2026

Two separate laboratory breakthroughs — one using a metamaterial time mirror for electromagnetic waves, the other a quantum 'rewind' protocol for single particles — have demonst... 十二月 24, 2025

A new preprint argues that a re-interpretation of Landauer conductance and a locally defined density of states resolve the quantum measurement problem and enable time travel via... 十二月 12, 2025

Physicists have long studied whether the past or future can be reached. This article reviews what general relativity and quantum theory actually allow, what experiments are test... 十一月 18, 2025