Linear Optical Quantum Computation with Frequency-Comb Qubits and Passive Devices
arXiv:2301.03188 · doi:10.1103/PhysRevLett.130.200602
Abstract
We propose a linear optical quantum computation scheme using time-frequency degree 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.
arXiv comment6+3 pages, 3 figures
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