Outline of Research and Development Proposals
In the method of time-domain multiplexed general-purpose optical quantum computing developed by the program manager and his colleagues, clustered states are used as quantum entanglement for quantum computation, and these clustered states are generated using squeezed light. At present, the lowest error tolerance threshold of squeezing level of squeezed light is considered to be achieved by using a state called GKP qubit, which has been found to have a threshold of less than 10 dB, but the requirement for GKP qubit is very severe at present time. Hence there is a need to reduce the level of the requirements.
In this project, we are aiming to reduce the requirements for GKP qubits and further decrease of the threshold values for error correction tolerance.