论文标题
在三分之三的自旋链中诱导热逆转
Inducing Heat Reversal in a Three-Qubit Spin Chain
论文作者
论文摘要
按照热力学的标准第二定律，热量自发地从更热的身体流向较冷的身体。但是，量子相关性起着重要作用的量子系统可以表现出这种热流的非经典逆转。我们提出了一个由Qubits链组成的量子系统，每个量子位链中，每个Quibbs状态中的每个量子系统都只允许相邻的Qubits热相互作用。通过控制沿链条的初始量子相关性，我们随后证明了量子计算机上三克链的特殊情况的非经典热量反转。我们探索了自旋链的多种初始条件，以展示异国情调的行为，例如相邻量子对之间不平等的初始相关性提供的热量的优先泵送，从而增强了初始相关性在影响热流动动力学方面的作用。
By the standard second law of thermodynamics, heat spontaneously flows from a hotter body to a colder body. However, quantum systems in which quantum correlations play a prominent role can exhibit a non-classical reversal of such heat flow. We propose a quantum system consisting of a chain of qubits, each in local Gibbs states, where only adjacent qubits are allowed to thermally interact. By controlling initial quantum correlations along the chain, we then demonstrate non-classical heat reversal for the special case of a three-qubit chain on a quantum computer. We explore multiple initial conditions for the spin chain to showcase exotic behaviour such as the preferential pumping of heat afforded by unequal initial correlations between adjacent pairs of qubits, reinforcing the role that initial correlations play in influencing the dynamics of heat flow.
