论文标题
通过量子去探测器来区分欧姆热浴
Discrimination of Ohmic thermal baths by quantum dephasing probes
论文作者
论文摘要
我们通过删除量子探针来解决不同温度下结构化浴的区分。我们得出精确的减少动力学，并评估通过三种不同类型的量子探针可实现的最小误差概率，即量子，QUTRIT和由两个量子组成的量子寄存器。我们的结果表明，dephasing量子探针可用于区分低温值，并且对于相互作用时间的中间值，误差的概率较低。 QUTRIT探针在歧视任务中的表现优于量子，而由两个量子位制成的寄存器与依次使用的两个单量子器相比，没有任何优势。
We address the discrimination of structured baths at different temperatures by dephasing quantum probes. We derive the exact reduced dynamics and evaluate the minimum error probability achievable by three different kinds of quantum probes, namely a qubit, a qutrit and a quantum register made of two qubits. Our results indicate that dephasing quantum probes are useful in discriminating low values of temperature, and that lower probabilities of error are achieved for intermediate values of the interaction time. A qutrit probe outperforms a qubit one in the discrimination task, whereas a register made of two qubits does not offer any advantage compared to two single qubits used sequentially.
