A Diamond Defect Steered by Light Remembers a Quantum Secret ⚡ экспресс
Original: "A transition-metal qubit in diamond with all-optical control and millisecond quantum memory"
A tiny nickel defect in diamond is controlled purely by light and remembers quantum information thousands of times longer than ordinary qubits.
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A tiny flaw in diamond—a nickel-vacancy—becomes a qubit that obeys only light. Cooled to –271°C, it holds a quantum state 3400 times longer than natural—enough for light to reach a neighboring city. This promises working quantum networks without bulky magnets.
🎯 If an ordinary qubit forgot information at the same rate, it would lose it a thousand times per second. This one manages to send a message across city districts in a single millisecond.
🎬 Such long-lived qubits bring us closer to a quantum internet reminiscent of the ansible from Ursula Le Guin's Hainish Cycle—a device for instant communication across any distance.