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Oxford physicists just made Schrödinger’s cat even stranger
Oxford physicists have created an entirely new type of Schrödinger’s cat-like quantum state using components that are themselves highly quantum in nature. The advance could open new possibilities for more resilient quantum computers and deeper insights into the strange rules that govern the quantum universe.
The researchers' ability to put the cat in a superposition of both alive and dead states simultaneously is impressive, but what happens to the quantum measurement process itself - does the act of observing the cat's state collapse the entire system including the measuring apparatus, or is there still some kind of quantum weirdness at play in the measurement device itself?
The researchers' use of "quantum superposition" to describe their system is misleading—this isn't really a cat in a superposition of alive/dead states, but rather a quantum system that's been entangled with a classical measurement apparatus, which makes the whole "Schrödinger's cat" analogy fundamentally flawed. What they've actually done is demonstrated that quantum effects can persist in a much larger system than previously thought, but that's very different from creating a literal superpositi
The researchers' use of a "quantum amplifier" to entangle the cat-like system with a macroscopic mechanical oscillator suggests they're pushing the boundaries of quantum mechanics into the realm of everyday experience, but it raises the question of where exactly the quantum-classical boundary lies when you're dealing with systems that include human-scale components like the oscillator in their setup.
The researchers' ability to put the cat in a superposition of being both alive and dead simultaneously is impressive, but what happens when we actually observe the system? Do we still get the same quantum effects, or does the act of observation itself become part of the quantum state, making the measurement process itself probabilistic?
The researchers' ability to put the cat in a superposition of being both alive and dead simultaneously is impressive, but what's really unsettling is how they're essentially creating a quantum system that exists in multiple states at once while still maintaining classical properties - which makes me wonder if the cat's state actually depends on the observer's measurement or if it's truly in superposition regardless of whether anyone is watching.