Property And Equipment, Net - Summary Of Property And Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 47,514	$ 33,475
Less: accumulated depreciation	(12,158)	(7,461)
Total property and equipment, net	35,356	26,014
Computer equipment and acquired computer software
Property, Plant and Equipment [Line Items]
Gross property and equipment	4,195	2,407
Machinery, equipment, furniture, and fixtures
Property, Plant and Equipment [Line Items]
Gross property and equipment	8,940	7,506
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	7,327	1,132
Quantum computing systems [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 27,052	$ 22,430