XML 16 R1.htm IDEA: XBRL DOCUMENT v3.25.4
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Feb. 27, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag true    
Amendment Flag false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block]

Information required by Part III of this Form 10-K is incorporated by reference to the registrant’s proxy statement (the “Proxy Statement”) for the 2026 annual meeting of stockholders, which Proxy Statement will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year covered by this Form 10-K.

    
Entity Information [Line Items]      
Entity Registrant Name QUANTUM COMPUTING INC.    
Entity Central Index Key 0001758009    
Entity File Number 001-40615    
Entity Tax Identification Number 82-4533053    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Public Float     $ 2,545,765,591
Entity Incorporation, Date of Incorporation Jul. 20, 2018    
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One 5 Marine View Plaza    
Entity Address, Address Line Two Suite 214    
Entity Address, City or Town Hoboken    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07030    
Entity Phone Fax Numbers [Line Items]      
City Area Code (703)    
Local Phone Number 436-2121    
Entity Listings [Line Items]      
Title of 12(b) Security Common Stock, par value $.0001    
Trading Symbol QUBT    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   224,538,254