Loss-tolerant teleportation on large stabilizer states
Loss-tolerant teleportation on large stabilizer states
复制标题
大型稳定器状态上的丢失容忍隐形传态
DOI：
10.1088/2058-9565/aaf6c4
复制
发表时间：
2018
影响因子：
6.7
通讯作者：
H. Cable
中科院分区：
文献类型：
--
作者：
S. Morley;Mercedes Gimeno;T. Rudolph;H. Cable
我们提出了一个通用的方法，寻找丢失容忍隐形传态的大，纠缠稳定态，只使用单量子比特的测量，称为稳定器寻路（SPF）。对于预示的损失，SPF示出生成最佳的损失容忍的测量模式在任何给定的稳定器状态。此外，SPF还提供了高度损失容忍的隐形传态策略时，量子比特损失是unearned。我们提供了一个快速的SPF算法，不断更新的状态生成和测量，因此，这是适合于实时实现的量子计算设备。当与先前的图状态上的损失容忍隐形传态的模拟相比时，SPF在对预示和未预示损失的容忍度方面提供了相当大的增益，在各种图状态晶格上的低量子比特损失（<10%）的情况下实现了接近完美的隐形传态率（>95%）。利用这些结果，我们还提出了证据，指出在这种状态下存在容损阈值，这反过来表明，我们发现的容损行为也适用于量子比特的数量趋于无穷大。我们的研究结果代表了在大规模和不久的将来的量子架构中实现隐形传态的重大进展，这些架构容易受到量子比特丢失的影响，例如线性光量子计算和量子通信网络。
We present a general method for finding loss-tolerant teleportation on large, entangled stabilizer states using only single-qubit measurements, known as stabilizer pathfinding (SPF). For heralded loss, SPF is shown to generate optimally loss-tolerant measurement patterns on any given stabilizer state. Furthermore, SPF also provides highly loss-tolerant teleportation strategies when qubit loss is unheralded. We provide a fast algorithm for SPF that updates continuously as a state is generated and measured, which is therefore suitable for real-time implementation on a quantum-computing device. When compared to simulations of previous heuristics for loss-tolerant teleportation on graph states, SPF provides considerable gains in tolerance to both heralded and unheralded loss, achieving a near-perfect teleportation rate (>95%) in the regime of low qubit loss (<10%) on various graph state lattices. Using these results we also present evidence that points towards the existence of loss-tolerant thresholds on such states, which in turn indicates that the loss-tolerant behaviour we have found also applies as the number of qubits tends to infinity. Our results represent a significant advance towards the realistic implementation of teleportation in both large-scale and near-future quantum architectures that are susceptible to qubit loss, such as linear optical quantum computation and quantum communication networks.
影响因子：
6.4
作者：
Preskill, John
通讯作者：
Preskill, John