Global technology major NTT Inc (NTT) and quantum computing development firm OptQC Corp (OptQC) have announced a collaboration to advance optical quantum computing (QC), which uses photonics in place of electronic signals in quantum computers (QCs).The duo have set an ambition to realise a 1-million qubit optical quantum computer by 2030 through this collaboration.Under the agreement, NTT will provide quantum error tolerance systems (needed to perform calculations on a QC while correcting errors) and optica ...