IEEE Transactions on Quantum Engineering | |
Timing Constraints Imposed by Classical Digital Control Systems on Photonic Implementations of Measurement-Based Quantum Computing | |
John R. Scott1  Krishna C. Balram2  | |
[1] Quantum Engineering Centre for Doctoral Training, Department of Physics, University of Bristol, Bristol, U.K.;Quantum Engineering Technology Labs and Department of Electrical and Electronic Engineering, University of Bristol, Bristol, U.K.; | |
关键词: Field-programmable gate array (FPGA); measurement and feed-forward; measurement-based quantum computing (MBQC); photonic quantum computing; timing analysis; | |
DOI : 10.1109/TQE.2022.3175587 | |
来源: DOAJ |
【 摘 要 】
Most of the architectural research on photonic implementations of measurement-based quantum computing (MBQC) has focused on the quantum resources involved in the problem with the implicit assumption that these will provide the main constraints on system scaling. However, the “flying-qubit” architecture of photonic MBQC requires specific timing constraints that need to be met by the classical control system. This classical control includes, for example, the amplification of the signals from single-photon detectors to voltage levels compatible with digital systems; the implementation of a control system which converts measurement outcomes into basis settings for measuring subsequent cluster qubits, in accordance with the quantum algorithm being implemented; and the digital-to-analog converter and amplifier systems required to set these measurement bases using a fast phase modulator. In this article, we analyze the digital system needed to implement arbitrary one-qubit rotations and controlled-
【 授权许可】
Unknown