论文标题
从量子速度极限到节能量子门
From quantum speed limits to energy-efficient quantum gates
论文作者
论文摘要
虽然量子计算中最近的突破有望使量子信息年龄的友善，但量子状态仍然可以控制。此外，仅考虑了大规模量子应用所需的能源预算。解决这两个问题中的任何一个都必须仔细研究基本量子操作的最有效的实施。在目前的分析中，我们表明可以在量子速度限制的强大框架内解决此最佳控制问题。为此，我们在充满活力的成本上得出了与国家无关的下限，从中，我们发现单一量子门和$ n $ qubit的操作都普遍地实现了统一量子门的最佳实现。
While recent breakthroughs in quantum computing promise the nascence of the quantum information age, quantum states remain delicate to control. Moreover, the required energy budget for large scale quantum applications has only sparely been considered. Addressing either of these issues necessitates a careful study of the most energetically efficient implementation of elementary quantum operations. In the present analysis, we show that this optimal control problem can be solved within the powerful framework of quantum speed limits. To this end, we derive state-independent lower bounds on the energetic cost, from which we find the universally optimal implementation of unitary quantum gates, for both single and $N$-qubit operations.
