Experimental implementation of encoded logical qubit operations in a perfect quantum error correcting code.
Experimental implementation of encoded logical qubit operations in a perfect quantum error correcting code.
复制标题
完美量子纠错码中编码逻辑量子位运算的实验实现
DOI：
10.1103/physrevlett.109.100503
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发表时间：
2012
影响因子：
8.6
通讯作者：
Dieter Suter
中科院分区：
文献类型：
--
作者：
Jingfu Zhang;Raymond Laflamme;Dieter Suter
大规模的普适量子计算需要实现量子纠错。虽然量子纠错的实现已经被证明用于量子存储器，但可靠的量子计算还需要对编码的量子比特应用非平凡的逻辑门操作。在这里，我们提供了这样的操作的例子，除了恒等操作之外，还通过将NOT和Hadamard门实现到以五个量子比特系统编码的逻辑量子比特，该系统允许纠正任意的单量子比特错误。我们进行了编码门操作的量子过程层析成像，演示了对所有可能的单量子比特错误的成功纠正，并测量了编码逻辑门操作的保真度。
Large-scale universal quantum computing requires the implementation of quantum error correction (QEC). While the implementation of QEC has already been demonstrated for quantum memories, reliable quantum computing requires also the application of nontrivial logical gate operations to the encoded qubits. Here, we present examples of such operations by implementing, in addition to the identity operation, theNOTand the Hadamard gate to a logical qubit encoded in a five qubit system that allows correction of arbitrary single-qubit errors. We perform quantum process tomography of the encoded gate operations, demonstrate the successful correction of all possible single-qubit errors, and measure the fidelity of the encoded logical gate operations.