Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2024

Revenue Recognition

Summary of Disaggregation of Revenue

The following tables depict the disaggregation of revenue according to the type of good or service and timing of transfer of goods or services for the three and six months ended June 30, 2024 and 2023, respectively (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Collaborative research, professional services and materials, and sales of quantum computers	$	3,081	$	2,484	$	5,918	$	4,294
Access to quantum computing systems		5		843		220		1,233
	$	3,086	$	3,327	$	6,138	$	5,527

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Revenue recognized at a point in time	$	523	$	336	$	523	$	336
Revenue recognized over time		2,563		2,991		5,615		5,191
	$	3,086	$	3,327	$	6,138	$	5,527

Summary of Accounts receivable, Contract with Customer Assets and Liabilities

Selected condensed consolidated balance sheet line items that reflect accounts receivable, contract assets and liabilities as of June 30, 2024 and December 31, 2023 were as follows (in thousands):

	June 30,2024		December 31, 2023		December 31, 2022
Trade receivables	$	3,178	$	2,650	$	6,143
Unbilled receivables	$	2,054	$	2,379	$	92
Deferred revenue	$	(836)	$	(343)	$	(961)

Summary of Changes in Deferred Revenue from Contracts with Customers

	Six Months Ended June 30,
	2024		2023
Balance at beginning of period	$	(343)	$	(961)
Deferral of revenue		(712)		(1,216)
Recognition of deferred revenue		219		1,344
Total deferred revenue at end of period	$	(836)	$	(833)