Property And Equipment, Net - Summary Of Property And Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 83,672	$ 80,373
Less: accumulated depreciation	(32,028)	(27,612)
Total property and equipment, net	51,644	52,761
Quantum computing systems [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	39,153	38,374
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	18,003	17,921
Machinery, equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross property and equipment	19,420	16,683
Computer equipment and acquired computer software
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 7,096	$ 7,395