Deterministic one-way logic gates on a cloud quantum computer
Deterministic one-way logic gates on a cloud quantum computer
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DOI：
10.1103/physreva.105.042610
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发表时间：
2021-08
影响因子：
2.9
通讯作者：
Zhi-Peng Yang;Huan-Yu Ku;A. Baishya;Yu-Ran Zhang;A. F. Kockum;Yueh-Nan Chen;Fu-li Li;J. Tsai;F. Nori
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文献类型：
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作者：
Zhi-Peng Yang;Huan-Yu Ku;A. Baishya;Yu-Ran Zhang;A. F. Kockum;Yueh-Nan Chen;Fu-li Li;J. Tsai;F. Nori
单向量子计算是容错量子计算的一个很有前途的候选者。在这里，我们提出了新的协议来实现一个确定性的单向CNOT门和单向$X$-旋转量子计算平台上。通过应用延迟选择方案，我们克服了大多数当前可用的量子计算机的限制，这些量子计算机无法对测量的量子位执行进一步的操作或以其他量子位的测量结果为条件的操作。此外，我们降低了错误率的单向逻辑门，相比，使用本地操作和经典通信（LOCC）的原始协议。此外，我们将我们的确定性单向CNOT门应用在Deutsch-Jozsa算法中，以显示我们的建议的可行性。我们通过在云量子计算平台IBM Quantum Experience上运行实验来演示所有这些单向门和算法。
One-way quantum computing is a promising candidate for fault-tolerant quantum computing. Here, we propose new protocols to realize a deterministic one-way CNOT gate and one-way $X$-rotations on quantum-computing platforms. By applying a delayed-choice scheme, we overcome a limit of most currently available quantum computers, which are unable to implement further operations on measured qubits or operations conditioned on measurement results from other qubits. Moreover, we decrease the error rate of the one-way logic gates, compared to the original protocol using local operations and classical communication (LOCC). In addition, we apply our deterministic one-way CNOT gate in the Deutsch-Jozsa algorithm to show the feasibility of our proposal. We demonstrate all these one-way gates and algorithms by running experiments on the cloud quantum-computing platform IBM Quantum Experience.