Hunting Dark Matter with Qubits ⚡ экспресс
Transmon qubits are quantum devices that are exceptionally resistant to external interference, yet sensitive to the tiniest energy inputs. Recent experiments revealed a mysterious shortening of qubit coherence time (stability) that can't be explained by thermal noise or other known factors. Researchers attributed this to collisions with dark matter particles from the galactic halo, and based on this data, set record laboratory limits on dark matter–electron scattering and dark photon absorption. It's like hearing the echo of an invisible ocean in which our entire Galaxy is submerged.
Dark matter is an invisible substance, five times more abundant in the universe than ordinary matter. Its particles barely touch atoms, but occasionally they can nudge an electron—like a string brushed by the wind.
At ultra-low temperatures, qubits in quantum computers are like taut strings: the slightest disturbance snaps their pure 'sound'. A dark matter particle colliding with an electron in such a device causes a jitter, increasing entropy and breaking the signal. John Bardeen explained superconductivity—the key to their operation.
By listening to this jitter in dozens of experiments, scientists filtered out ordinary noise and found a contribution that doesn't fit known physics. Thus they set record constraints on the properties of dark matter particles and their scattering off electrons, going beyond the Standard Model.
🎯 The energy from a dark matter particle's impact is so tiny it could only lift a grain of sand by the thickness of a human hair—yet even this drop disrupts the quantum string.
🎬 Science fiction writers dreamed of detectors for ghost particles. Quantum strings turned fantasy into reality, letting us hear the silent cosmos.