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BUSINESS COMBINATION - Schedule of Pro Forma Financial Information (Details) - Quantum Circuits, Inc. - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 5 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2026 | Jun. 30, 2025
Business Combination, Pro Forma Information [Line Items] |  |  |  |  |
Revenue | $ 3,076 | $ 3,195 |  | $ 5,934 | $ 18,296
Loss from operations | (53,278) | (35,730) |  | (101,920) | (65,660)
Net loss | $ (47,844) | $ (176,586) |  | $ (60,125) | $ (200,682)
Net loss per share, basic (in usd per share) | $ (0.13) | $ (0.56) |  | $ (0.16) | $ (0.66)
Net loss per share, diluted (in usd per share) | $ (0.13) | $ (0.56) |  | $ (0.16) | $ (0.66)
Weighted-average number of shares outstanding used to compute net loss per share, basic (in shares) | 370,840,115 | 312,719,237 |  | 370,318,503 | 304,828,863
Weighted-average number of shares outstanding used to compute net loss per share, diluted (in shares) | 370,840,115 | 312,719,237 |  | 370,318,503 | 304,828,863
Revenue |  |  | $ 250 |  |
Net loss |  |  | $ (15,986) |  |

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