论文标题
将物理Qubit的量子传送到逻辑代码空间
Quantum teleportation of physical qubits into logical code-spaces
论文作者
论文摘要
量子误差校正是可靠地执行大规模处理量子信息的任务的必要工具。但是,当人们意识到非透明操作(对于通用量子计算至关重要)导致错误的传播时,将其集成到量子电路中以实现这些任务是有问题的。量子门传送已被提议作为这一点的优雅解决方案。在这里,一个人用特定的,高度纠缠的离线资源状态代替了这些脆弱的非透明内联门,可以将其传送到电路中以实现非透明栅极。作为第一个重要步骤,我们在物理和可误差可纠正的逻辑量子位之间创建一个最大纠缠的状态,并将其用作传送资源。然后,我们演示了在物理量子位上编码的量子信息传送到误差校正的逻辑量子位,其保真度最高为0.786。我们的方案可以设计为完全容忍,因此可以在未来的大规模量子技术中使用。
Quantum error correction is an essential tool for reliably performing tasks for processing quantum information on a large scale. However, integration into quantum circuits to achieve these tasks is problematic when one realizes that non-transverse operations, which are essential for universal quantum computation, lead to the spread of errors. Quantum gate teleportation has been proposed as an elegant solution for this. Here, one replaces these fragile, non-transverse inline gates with the generation of specific, highly entangled offline resource states that can be teleported into the circuit to implement the non-transverse gate. As the first important step, we create a maximally entangled state between a physical and an error-correctable logical qubit and use it as a teleportation resource. We then demonstrate the teleportation of quantum information encoded on the physical qubit into the error-corrected logical qubit with fidelities up to 0.786. Our scheme can be designed to be fully fault-tolerant so that it can be used in future large-scale quantum technologies.