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Capital Stock (Details) - USD ($) |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 05, 2025 | Sep. 21, 2025 | Jun. 22, 2025 | Jan. 07, 2025 | Dec. 10, 2024 | Nov. 30, 2024 | Nov. 14, 2024 | Mar. 19, 2024 | Aug. 17, 2023 | Oct. 28, 2022 | Nov. 17, 2021 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Jun. 16, 2022 | Aug. 31, 2020 | Jul. 20, 2018
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 | $ 0.0001 |  |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 2,412,000 |  |  |  |  |
Warrants term |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |
Exercise price |  |  |  |  |  |  | $ 2.875 |  |  |  |  | $ 14.0875 |  |  |  |  |
Aggregate cash purchase price |  |  |  |  |  |  |  | $ 8,195,000,000 |  |  |  |  |  |  |  |  |
Aggregate purchase price per share |  |  |  |  |  |  |  | $ 5.5 |  |  |  |  |  |  |  |  |
Preferred stock redeemed |  |  |  |  |  |  |  |  |  |  |  |  | 745,047 |  |  |  |
Sale of securities |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |  |  |  |
Aggregate offering price value |  |  |  |  |  |  |  |  |  |  |  | $ 1,475,144,000 | $ 106,766,000 | 24,730,000 |  |  |
Sale of common stock |  |  |  |  |  |  |  |  |  |  |  |  | 23,679,391 |  |  |  |
Aggregate private placement shares |  |  | 14,035,089 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  |  |  |  | 1,540,000 |  | 16,000,000 |  |  |  |  |  |  |  |  |  |
Common stock par value per share |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 | $ 0.0001 |  |  |  | $ 0.0001
Gross proceeds placement amount |  |  | $ 200,000,000 | $ 6,400,000 |  |  |  |  |  |  |  | $ 42,300,000 |  |  |  |  |
Percentage of cash fee |  |  |  | 6.00% | 7.00% |  |  |  |  |  |  |  |  |  |  |  |
Outstanding warrants |  |  |  | 326,531 | 500,000 |  |  |  |  |  |  |  |  |  |  |  |
Percentage of securities sold offerings |  |  |  | 4.00% | 5.00% |  |  |  |  |  |  |  |  |  |  |  |
Price of per share |  |  | $ 14.25 |  |  |  | $ 2.5 |  |  |  |  |  |  |  |  |  |
Other offering expenses |  |  | $ 12,000,000 |  |  |  | $ 40,000,000 |  |  |  |  |  |  |  |  |  |
Fee and expenses value |  |  |  |  | $ 100,000,000 |  | 100,000,000 |  |  |  |  |  |  |  |  |  |
Sales of equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 2,411,000 |  |  |  |  |
Convertible note |  |  |  |  |  |  | $ 9,300,000 |  |  |  |  |  |  |  |  |  |
Cash fee percentage |  |  |  |  |  |  | 7.25% |  |  |  |  |  |  |  |  |  |
Securities sold percentage |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Placement shares |  |  |  |  | 8,460,000 |  |  |  |  |  |  |  |  |  |  |  |
Placement shares |  |  |  |  | $ 5 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of warrant |  |  |  |  |  |  |  |  |  |  |  | 6,300,000 |  |  |  |  |
Bid stock price per share |  |  |  |  |  |  |  |  |  |  |  | $ 10.26 |  |  |  |  |
Due to forfeitures |  |  |  |  |  |  |  |  |  |  |  | 481,949 |  |  |  |  |
Exercise share |  |  |  |  |  |  |  |  |  |  |  | 65,306 |  |  |  |  |
Forfeited percentage |  |  |  |  |  |  |  |  |  |  |  | 69.00% |  |  |  |  |
Market value price per share |  |  |  |  |  |  |  |  |  |  |  | $ 10.26 | $ 16.55 |  |  |  |
Market loss |  |  |  |  |  |  |  |  |  |  |  | $ 11,800,000 | $ (40,500,000) | $ 528,000 |  |  |
December Placement Agent [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  |  |  | 5.75 |  |  |  |  |  |  |  |  |  |  |  |
Warrant liability |  |  |  | $ 14,087.5000 |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 2,875 |  |  |  |  |
Outstanding warrants |  |  |  |  |  |  | 800,000,000 |  |  |  |  | 1,958,000 |  |  |  |  |
Warrant liability |  |  |  |  |  |  |  |  |  |  |  | $ 7,800,000 | 40,500,000 |  |  |  |
Issuance of warrant |  |  |  |  |  |  |  |  |  |  |  | 6,300,000 |  |  | 6,300,000 |  |
Net proceeds from common stock |  |  |  |  |  |  |  |  |  |  |  | $ 469,306 |  |  |  |  |
Exercise share |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  |  |
Exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 5.75 |  |  |  |  |
Proceeds from stock options exercised |  |  |  |  |  |  |  |  |  |  |  | $ 1,187,000 |  |  |  |  |
QPhoton warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 |  |  | $ 0.0001 |  |
QPhoton Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise warrants shares |  |  |  |  |  |  |  |  |  |  |  | 1,677,439 |  |  |  |  |
Outstanding warrants |  |  |  |  |  |  |  |  |  |  |  | 758,000,000 |  |  |  |  |
Warrant exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 1,656,000 |  |  |  |  |
Issuance of warrant |  |  |  |  |  |  |  |  |  |  |  | 7,000,000 |  |  |  |  |
Exercised share |  |  |  |  |  |  |  |  |  |  |  | 304,000 |  |  |  |  |
Derivative liability |  |  |  |  |  |  |  |  |  |  |  | $ 21,000,000 |  |  |  |  |
Ecurities Purchase Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  |  |  | 8,163,266 |  |  |  |  |  |  |  |  |  |  |  |  |
September Purchase Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of cash fee |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise warrants shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 171,000 |
Exercise price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2 |
Ascendiant Capital Markets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from market facility |  |  |  |  |  |  |  |  |  |  |  |  | $ 48,500,000 |  |  |  |
QPhoton Merger [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unissued warrants |  |  |  |  |  |  |  |  |  |  |  | 702,834 |  |  |  |  |
Titan Capital Partners [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 2,400,000 |  |  |  |  |
QPhoton warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 119,000 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from market facility |  |  |  |  |  |  |  |  | $ 25,000,000 |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from market facility |  |  |  |  |  |  |  |  | 50,000,000 |  |  |  |  |  |  |  |
Series A Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, share authorized |  |  |  |  |  |  |  |  |  |  |  | 1,550,000 | 1,550,000 |  |  |  |
Preferred stock, par value |  |  |  |  |  |  |  |  |  |  | $ 0.0001 |  |  |  |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased shares |  |  |  |  |  |  |  |  |  |  | 1,545,459 |  |  |  |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  | $ 8,500,000 |  |  |  |  |  |
Additional paid in capital |  |  |  |  |  |  |  | $ 8,195,000 |  |  |  |  |  |  |  |  |
Preferred stock redeemed value |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,100,000 |  |  |  |
Series A Preferred Stock [Member] | Preferred Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise warrants shares |  |  |  |  |  |  |  |  |  |  | 1,545,459 |  |  |  |  |  |
Series A Preferred Stock [Member] | Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, share authorized |  |  |  |  |  |  |  |  |  |  |  | 1,550,000 | 1,550,000 |  |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |
Conversion of Series A preferred stock to common stock |  |  |  |  |  |  |  |  |  |  |  |  | (745,000) |  |  |  |
Issuance of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercised share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Preferred Stock [Member] | Series A Redemption Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, share authorized |  |  |  |  |  |  |  |  |  |  |  | 3,080,000 | 3,080,000 |  |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Preferred Stock [Member] | Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, share authorized |  |  |  |  |  |  |  |  |  |  |  | 3,079,864 | 3,079,864 |  |  |  |
Preferred stock, par value |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 | $ 0.0001 |  |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 7 |  |  |  |  |
Common stock par value per share |  |  |  | $ 12.25 | 0.0001 |  | $ 0.0001 |  |  |  |  |  |  |  |  |  |
Common Stock [Member] | Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding warrants |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  |  |  |  |
Series A Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Series A preferred stock to common stock |  |  |  |  |  | 744,957 |  |  |  |  |  |  | 744,957 |  |  |  |
At-the-Market Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price value |  |  |  |  |  |  |  |  | $ 27,362,717,000 |  |  |  |  |  |  |  |
Proceeds from market facility |  |  |  |  |  |  |  |  |  |  |  |  | $ 23,800,000 | $ 24,700,000 |  |  |
Sales of equity |  |  |  |  |  |  |  |  |  |  |  |  | $ 106,800,000 |  |  |  |
At-the-Market Facility [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate private placement shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,571,926 |  |  |
Average price per share |  |  |  |  |  |  |  |  |  |  |  | $ 1.21 |  |  |  |  |
Registered Direct Offering [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds placement amount |  |  |  | $ 100,000,000 |  |  |  |  |  |  |  | $ 7,700,000 |  |  |  |  |
Sales of equity |  |  |  |  |  |  |  |  |  |  |  | 1,475,100,000 |  | $ 24,700,000 |  |  |
Warrant exercise price |  |  |  |  |  |  |  |  |  |  |  | 2,400,000 |  |  |  |  |
Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price of per share |  |  |  |  | $ 5 |  |  |  |  |  |  |  |  |  |  |  |
Fee and expenses value |  |  |  |  |  |  |  |  |  |  |  | 100,000,000 |  |  |  |  |
Issuance of shares | 37,183,937 | 26,867,276 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from private placement | $ 750,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | September Purchase Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds placement amount |  | $ 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
October Purchase Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fee and expenses value |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |  |
Percentage of cash fee |  |  |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |

X
- Definition The amount aggregate purchase price, + References No definition available. + Details
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- Definition The per share of aggregate purchase price. + References No definition available. + Details
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- Definition Bid stock price per share. + References No definition available. + Details
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- Definition The percentage of cash fee. + References No definition available. + Details
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Balance Type: | na
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- Definition The amount of fee and expenses. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Forfeited Percentage. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Market loss. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Market value price per share. + References No definition available. + Details
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Balance Type: | na
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X
- Definition The amount of net proceeds from common stock. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of other offering expenses. + References No definition available. + Details
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Namespace Prefix: | qubt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The percentage of cash fee. + References No definition available. + Details
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Namespace Prefix: | qubt_
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Balance Type: | na
Period Type: | duration

X
- Definition The percentage of securities sold. + References No definition available. + Details
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Namespace Prefix: | qubt_
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Balance Type: | na
Period Type: | duration

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