论文标题
合作量子信息擦除
Cooperative quantum information erasure
论文作者
论文摘要
我们演示了一个信息擦除协议，该协议一次重置$ n $ QUBITS。该方法在能源成本方面显示出卓越的性能（它几乎以Landauer Energy成本运行$ kt \ ln 2 $），持续时间（$ \ simμs$）和擦除成功率（$ \ sim 99,9 \％$）。该方法通过利用与自发对称性破坏机制相关的合作效应来脱离标准算法冷却范式，这些效果通过量子隧道现象而放大。这种合作的量子擦除协议是在商业量子退火器上实验证明的，可以很容易地应用于下一代混合栅极/量子的量子计算机，以快速，有效且有效地对量子处理单元进行节能初始化。
We demonstrate an information erasure protocol that resets $N$ qubits at once. The method displays exceptional performances in terms of energy cost (it operates nearly at Landauer energy cost $kT \ln 2$), time duration ($\sim μs$) and erasure success rate ($\sim 99,9\%$). The method departs from the standard algorithmic cooling paradigm by exploiting cooperative effects associated to the mechanism of spontaneous symmetry breaking which are amplified by quantum tunnelling phenomena. Such cooperative quantum erasure protocol is experimentally demonstrated on a commercial quantum annealer and could be readily applied in next generation hybrid gate-based/quantum-annealing quantum computers, for fast, effective, and energy efficient initialisation of quantum processing units.
