aiqbench takeQuantum Computing

Researchers have demonstrated time-crystalline order in superconducting qubits lasting 120 cycles using a novel disorder-free mechanism called Fock space prethermalization. This breakthrough suppresses system heating by organizing the computational state network into sparse sub-networks, significantly extending the lifespan of fragile quantum states without relying on specific driving frequencies or material defects. The findings offer a robust pathway for maintaining highly entangled states essential for practical quantum information processing and breaking ergodicity in driven systems.

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Superconducting Qubits Show Time-Crystalline Order for 120 Cycles

Quantum ZeitgeistAugust 1, 20265 min read

Researchers observed time-crystalline order in superconducting qubits, sustaining it for up to 120 cycles.

Researchers at Zhejiang University, Lanzhou University, University of Houston, and Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, have demonstrated a remarkably stable form of time-crystalline order in a 72-qubit superconducting processor, maintaining the exotic quantum state for 120 cycles. This mechanism divides the Fock-space network into linearly many sparse sub-networks, thereby prolonging the thermalization timescale even for initial states at high energy densities. The work reveals that approximately conserved domain wall numbers underpin this stability, offering a pathway to harness highly entangled states for quantum applications and breaking ergodicity in these systems.…

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