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Revenue Recognition - Summary of Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Disaggregation of Revenue [Line Items]        
Revenue $ 2,134 $ 1,540 $ 4,238 $ 3,900
Revenue recognized at a point in time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 0 0 0 0
Revenue recognized over time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 2,134 1,540 4,238 3,900
Collaborative research and other professional services [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 1,477 944 2,992 2,547
Access to quantum computing systems [Member]        
Disaggregation of Revenue [Line Items]        
Revenue $ 657 $ 596 $ 1,246 $ 1,353