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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
 [1]
Dec. 31, 2023
Dec. 31, 2022
Cash flows from operating activities:        
Net loss $ (17,305) $ (20,395) [2] $ (27,022) [3] $ (25,978) [3]
Adjustments to reconcile net loss to net cash used in operations        
Depreciation and intangibles amortization 2,542 2,509 3,307 [4] 1,863 [4]
Amortization of issuance costs 323 730 925 [4] 547 [4]
Change in fair value of warrant liability (384) [2] (528) [3] (3,392) [3]
Provision for credit losses [4]     279
Other recognized losses (gains) 31 5 [4] 78 [4]
Stock-based compensation expense 2,680 3,110 4,271 [4] 9,323 [4]
Stock-based compensation expense for services 21 282 284 [4] 2,350 [4]
Changes in operating assets and liabilities        
Accounts receivable 2 11 (52) [4] (13) [4]
Inventories (168) (70) [4] [4]
Prepaid expenses and other current assets (115) (110) (110) [4] (145) [4]
Other non-current assets (571) 89 153 [4] (1,214) [4]
Accounts payable (539) 259 596 [4] 219 [4]
Deferred revenue 48 12    
Accrued expenses and other current liabilities 155 939 110 [4] (319) [4]
Other long-term liabilities 457 (400) (463) [4] 1,303 [4]
Net cash used in operating activities (12,439) (13,348) (18,315) [4] (15,378) [4]
Cash flows from investing activities:        
Purchase of property and equipment (3,170) (2,165) (2,112) [4] (870) [4]
Loans receivable (500) (500) [4] [4]
Net cash used for QPhoton, Inc. merger [4]     (1,356)
Net cash used in investing activities (3,170) (2,665) (2,612) [4] (2,226) [4]
Cash flows from financing activities:        
Proceeds raised from financial liabilities, net of issuance costs 6,995 [4] 6,960 [4]
Payments of financial liabilities, net of interest (2,063) (4,030) (6,187) [4] [4]
Series A Preferred stock dividend payments (215) (650) (865) [4] (787) [4]
Repurchase of Series A preferred stock (2,732)    
Proceeds from stock issuance related to ATM facility 14,629 22,764 24,730 [4] [4]
Net cash provided by financing activities 16,614 18,084 17,678 [4] 6,173 [4]
Net increase in cash 1,005 2,071 (3,249) [4] (11,431) [4]
Cash and cash equivalents, beginning of period [4] 2,059 5,308 5,308 [1] 16,739
Cash and cash equivalents, end of period 3,064 7,379 2,059 [4] 5,308 [1],[4]
Supplemental disclosures of Cash flow information:        
Cash paid for interest 31 720 813 [4] [4]
Non-cash investing and financing activities:        
Reclassification of Series A preferred stock to mezzanine equity 8,195    
Valuation of derivative associated with convertible financial liability $ 666    
Non-cash operating activities        
Non-cash issuance of shares for services [4]     2,651 502
Non-cash financing activities        
Common stock, preferred stock and warrants issued in connection with QPhoton Merger [4]     $ 71,050
[1] As described in Note 15 to these unaudited condensed consolidated financial statements, we have restated the unaudited condensed consolidated statement of cash flows for the nine months ended September 30, 2023.
[2] As described in Note 15 to these unaudited condensed consolidated financial statements, we have restated the unaudited condensed consolidated statements of operations for the three and nine months ended September 30, 2023.
[3] As described in Note 3 to the Consolidated Financial Statements appearing elsewhere in this Amendment, we have restated the Consolidated Financial Statements.
[4] As described in Note 3 to the Consolidated Financial Statements appearing elsewhere in this Amendment, we have restated the Consolidated Financial Statements.