Linear Optical Quantum Computation with Frequency-Comb Qubits and Passive Devices.
Linear Optical Quantum Computation with Frequency-Comb Qubits and Passive Devices.
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利用频率梳量子比特和无源器件进行线性光学量子计算。
DOI：
10.1103/physrevlett.130.200602
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发表时间：
2023-01
影响因子：
8.6
通讯作者：
Tomohiro Yamazaki;Tomoaki Arizono;Toshiki Kobayashi;R. Ikuta;Takashi Yamamoto
中科院分区：
文献类型：
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作者：
Tomohiro Yamazaki;Tomoaki Arizono;Toshiki Kobayashi;R. Ikuta;Takashi Yamamoto
我们提出了一种使用时频自由度的线性光学量子计算方案。在这个方案中，量子比特被编码在单光子频率梳中，并且使用时间分辨探测器、分束器和光交织器来操作量子比特。该方案不需要高速开关和电光调制器等有源器件，并且对主要由探测器有限分辨率引起的时间和光谱误差具有鲁棒性。我们的研究表明，目前的技术几乎满足了容错量子计算的要求。
We propose a linear optical quantum computation scheme using time-frequency degrees of freedom. In this scheme, a qubit is encoded in single-photon frequency combs, and manipulation of the qubits is performed using time-resolving detectors, beam splitters, and optical interleavers. This scheme does not require active devices such as high-speed switches and electro-optic modulators and is robust against temporal and spectral errors, which are mainly caused by the detectors' finite resolution. We show that current technologies almost meet the requirements for fault-tolerant quantum computation.