Quantum Computers Will Challenge Gravity ⚡ экспресс
Original: "Probing the Planck scale with quantum computation"
Testing quantum gravity needs just 500 qubits in a lab, or 1,600 on a cosmic scale.
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The smallest possible length in nature—the Planck length—sets a speed limit even for computers. Scientists calculated: a quantum computer with 1,600 qubits can overcome this barrier and peer into a realm where space is no longer smooth. Commercial models with those specs could arrive within a few years.
🎯 The number 2⁴⁹¹ is so large that if every atom in the observable universe were computing at the speed of light, their combined output still wouldn’t reach this limit.
🎬 The idea of computations that peel back the foundations of reality feels like science fiction—for example, Greg Egan’s novel "Diaspora".
$2^{491} \ \text{m}^{-3} \ \text{s}^{-1}$
Maximum classical information processing speed per unit volume (operations per second per cubic meter).