Is spacetime fundamental, or does it emerge from quantum interactions? A method is proposed to describe time dilation purely from quantum mechanics. Any operational definition of time requires regular motion and memory; the clock model is a quantum battery charged via open quantum dynamics. The expected charge grows linearly as φt, where φ depends on an auxiliary quantum state σ. Changing σ alters φ, making it possible to describe varying time rates and construct a spacetime metric. The approach is illustrated with the metric of a black hole.
Two phones with identical batteries: one charges in a basement with a weak signal, and the process goes slower. The battery percentage here plays the role of a clock hand. Physicists applied the same logic to the quantum world. Their clock is a microscopic battery that stores energy. The charging rate depends on a hidden quantum 'mode'—like a switch. Flip the mode, and charging speeds up or slows down, mimicking time dilation near a black hole or at extreme speeds.
This isn't fantasy. If spacetime is just an illusion woven from quantum threads, then the gap between gravity and the microworld can be stitched together. Astonishingly, such a battery fits in a single atom. It 'charges' by absorbing light particles, and the more light it absorbs, the further the hand of its internal clock moves.
🎯 A single atom absorbing light particles becomes a clock itself: each gulp of light is a tick, and the accumulated energy is the time that's passed.