Centre for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia.
Centre for Quantum Software and Information, School of Software, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
Phys Rev Lett. 2019 Mar 22;122(11):110403. doi: 10.1103/PhysRevLett.122.110403.
We identify and explore the intriguing property of resource resonance arising within resource theories of entanglement, coherence, and thermodynamics. While the theories considered are reversible asymptotically, the same is generally not true in realistic scenarios where the available resources are bounded. The finite-size effects responsible for this irreversibility could potentially prohibit small quantum information processors or thermal machines from achieving their full potential. Nevertheless, we show here that by carefully engineering the resource interconversion process any such losses can be greatly suppressed. Our results are predicted by higher order expansions of the trade-off between the rate of resource interconversion and the achieved fidelity, and are verified by exact numerical optimizations of the appropriate underlying approximate majorization conditions.
我们识别并探索了出现在纠缠、相干和热力学资源理论中的资源共振这一有趣性质。虽然所考虑的理论在渐近意义上是可逆的，但在实际情况中，由于可用资源是有限的，通常情况并非如此。导致这种不可逆性的有限尺寸效应可能会阻止小型量子信息处理器或热机充分发挥其潜力。然而，我们在这里表明，通过精心设计资源转换过程，可以大大抑制这种损失。我们的结果是通过对资源转换率和实现保真度之间的权衡进行高阶扩展来预测的，并通过对适当的近似主导条件进行精确的数值优化来验证。
