Complex Photonic Systems (COPS), MESA+ Institute for Nanotechnology, University of Twente, 7522 NB Enschede, Netherlands.
Phys Rev Lett. 2019 Feb 1;122(4):040602. doi: 10.1103/PhysRevLett.122.040602.
Landauer's erasure principle states that the irreversible erasure of a one-bit memory, embedded in a thermal environment, is accompanied with a work input of at least k_{B}Tln2. Fundamental to that principle is the assumption that the physical states representing the two possible logical states are close to thermal equilibrium. Here, we propose and theoretically analyze a minimalist mechanical model of a one-bit memory operating with squeezed thermal states. It is shown that the Landauer energy bound is exponentially lowered with increasing squeezing factor. Squeezed thermal states, which may naturally arise in digital electronic circuits operating in a pulse-driven fashion, thus can be exploited to reduce the fundamental energy costs of an erasure operation.
兰德auer 的擦除原理指出，在热环境中，对一个存储了一位信息的记忆进行不可逆擦除，将会伴随着至少 kBTln2 的功输入。该原理的基础假设是，代表两个可能逻辑状态的物理状态接近热平衡。在这里，我们提出并理论分析了一种使用压缩热态操作的一位存储的最小力学模型。结果表明，随着压缩因子的增加，兰德auer 能量界限呈指数降低。压缩热态可能会自然出现在以脉冲驱动方式运行的数字电子电路中，因此可以被利用来降低擦除操作的基本能量成本。
