Can Time Run Backward? Quantum Physics Says Yes
5/4/202613 min
Can time run backward? Using a quantum processor, scientists reversed a system’s evolution—restoring a dispersed quantum state to its original form.
The result shows that, under controlled conditions, quantum algorithms can locally undo processes that normally increase disorder. It doesn’t break physics, but it reframes how we understand time, entropy, and control over quantum information.
This episode includes AI-generated content.
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First 90 secondsSpeaker 1· Host0:00
[gentle music] Welcome to the Quark Side Quantum Physics Podcast, an exploration of the fundamental structure of reality where quantum laws govern matter, energy and information. Here, uncertainty is a feature, not a flaw, and understanding begins at the smallest scales.
Speaker 2· Host0:21
Right now in March 2026, physics is staring down a reality that honestly sounds, well, like pure science fiction. We are talking about the actual physical reversal of a quantum blur.
Speaker 3· Host0:39
Yeah. It really does sound completely made up, doesn't it?
Speaker 2· Host0:42
It totally does. And to immediately lock onto what makes this so groundbreaking, we have to look at the three pillars holding this whole thing up.
Speaker 3· Host0:48
Right.
Speaker 2· Host0:49
First, you've got quantum mechanics, which is the fundamental rule book for the subatomic world. Second, this state of a blur, the probabilistic undefined way that reality actually exists before it gets observed. And third, the massive leap we are examining today, which is the physical engineered act of reversing it. We are no longer talking about theoretical math on a chalkboard here. We're talking about actively manipulating the foundational fabric of reality right in a laboratory setting.
Speaker 3· Host1:18
What's fascinating here is that we're looking at a direct challenge to how we perceive the flow of existence itself. Reversing a quantum blur isn't just, you know, a neat laboratory trick.
Speaker 2· Host1:28
Right, or some minor tech upgrade for