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REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)
 9 Months Ended
Sep. 30, 2025
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
The following table depicts the disaggregation of revenue by type of products or services and timing of transfer of products or services (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
Type of products or services
System sales$1,843 $— $15,515 $— 
QCaaS1,384 1,599 4,158 5,071 
Professional services476 271 2,038 1,305 
Other revenue*36 — 124 142 
Total revenue$3,739 $1,870 $21,835 $6,518 
Timing of revenue recognition
Revenue recognized over time$3,733 $1,856 $9,152 $6,480 
Revenue recognized at a point in time6 14 12,683 38 
Total revenue$3,739 $1,870 $21,835 $6,518 
*Other revenue includes support and maintenance and printed circuit board sales.
The following table presents a summary of revenue by geography for the three and nine months ended September 30, 2025 and 2024, based on customer location (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
Germany$1,972 $483 $15,962 $1,488 
United States715 484 1,922 1,845 
Japan266 175 904 610 
Canada192 230 764 775 
Other594 498 2,283 1,800 
Total revenue$3,739 $1,870 $21,835 $6,518 
Schedule of Significant Customers
The tables below present the significant customers on a percentage of total revenue basis for the three and nine months ended September 30, 2025 and 2024.
Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
Customer A51 %19 %72 %18 %
Customer B— %11 %— %— %
Schedule of Contract Balances and Revenue Recognized
The following table provides information about accounts receivable, contract assets and liabilities as of September 30, 2025 and December 31, 2024 (in thousands):
As of September 30, 2025As of December 31, 2024
Trade accounts receivable and contract assets, net:
Trade accounts receivable, net of allowance for credit losses and excluding unbilled receivables$1,212 $867 
Contract asset for unbilled receivables715 553 
Contract acquisition costs163 174 
Total contract assets$2,090 $1,594 
Contract liabilities:
Deferred revenue, current$3,389 $18,686 
Deferred revenue, non-current629 670 
Customer deposit1
— 48 
Total contract liabilities$4,018 $19,404 
1Customer deposit is included in accrued expenses and other current liabilities on the condensed consolidated balance sheets.
Changes in deferred revenue from contracts with customers were as follows (in thousands):
Nine Months Ended September 30,
20252024
Balance at beginning of period$19,356 $2,748 
Deferral of revenue6,510 6,768 
Recognition of deferred revenue(21,848)(6,549)
Balance at end of period$4,018 $2,967