Perovskite crystals can host qubits, challenging long-held assumptions

Researchers have successfully created qubits using perovskite materials, challenging the assumption that only ultra-pure, expensive crystals like diamond or silicon can host stable quantum bits. This breakthrough was published in Nature Communications. The discovery could drastically reduce quantum computing costs by replacing rare, high-purity materials with abundant, solution-processable perovskites, which are already widely used in solar cells and LEDs. Experiments confirmed perovskites can maintain quantum coherence long enough for practical applications, though further optimization is needed to match the performance of traditional qubit materials like superconducting circuits or trapped ions. The team used hybrid organic-inorganic perovskites, leveraging their defect tolerance and tunable electronic properties—a sharp contrast to conventional qubit hosts that require near-perfect crystal lattices. This advancement may accelerate scalable quantum hardware development, particularly for room-temperature operations, as perovskites are easier to synthesize and integrate into existing semiconductor manufacturing processes.