论文标题
抑制被困离子中的振幅阻尼：非单身概率噪声滤波器的离散弱测量值
Suppressing Amplitude Damping in Trapped Ions: Discrete Weak Measurements for a Non-unitary Probabilistic Noise Filter
论文作者
论文摘要
将最大输入状态用作资源的想法是量子信息处理几种方式的核心，包括安全的量子通信，量子计算和量子传感。但是，由于用于准备此类状态的纠缠门期间或之后的缺陷，纠缠的量减少，其作为资源作为资源的质量被降低。我们引入了一个低离子协议，通过部分滤除与许多量子技术相关的特定噪声类型，以扭转这种降级。我们提出了两个用于针对振幅阻尼噪声实施的非自然概率过滤器的捕获离子方案，它们可以保护任何最大插入的对在两Q Q Quibittaped捕获的离子纠缠的门期间或之后的自发光子散射。可以将此过滤器理解为单拷贝准依次的协议，因为它仅使用局部操作来实现可以通过弱测量值来理解的逆转操作。
The idea of exploiting maximally-entangled states as a resource lies at the core of several modalities of quantum information processing, including secure quantum communication, quantum computation, and quantum sensing. However, due to imperfections during or after the entangling gates used to prepare such states, the amount of entanglement decreases and their quality as a resource gets degraded. We introduce a low-overhead protocol to reverse this degradation by partially filtering out a specific type of noise relevant to many quantum technologies. We present two trapped-ion schemes for the implementation of a non-unitary probabilistic filter against amplitude damping noise, which can protect any maximally-entangled pair from spontaneous photon scattering during or after the two-qubit trapped-ion entangling gates. This filter can be understood as a protocol for single-copy quasi-distillation, as it uses only local operations to realise a reversal operation that can be understood in terms of weak measurements.
