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Description of business	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Description of Business		1. Background and Nature of Operations D-Wave Quantum Inc. (“D-Wave” or the “Company”) was incorporated as a corporation organized and existing under the General Corporation Law of the State of the Delaware on January 24, 2022. The Company was formed for the purpose of effecting a merger between DPCM Capital, Inc. (“DPCM”), D-Wave Systems Inc. (“D-Wave Systems”), and certain other affiliated entities through a series of transactions (the “Business Combination”) pursuant to the definitive agreement entered into on February 7, 2022 (the “Transaction Agreement”). On August 5, 2022, in conjunction with the Business Combination, DPCM and D-Wave Systems became wholly owned subsidiaries of and are operated by the Company. Upon the completion of the Business Combination, the Company succeeded to substantially all of the operations of its predecessor, D-Wave Systems. In conjunction with the Business Combination, D-Wave Systems and the Company entered into an agreement with Lincoln Park Capital Fund LLC (the “Investor”) on June 16, 2022 which provides D-Wave the sole right, but not the obligation, to direct the Investor to buy specified dollar amounts up to $150.0 million of D-Wave’ par value $0.0001 per share common stock through an Equity Line of Credit (“ELOC”). The ELOC will provide D-Wave Systems and the Company with additional liquidity to fund the business, subject to the conditions set forth in the agreement.
DWave System [Member]
Description of Business	1. Description of business D-Wave Systems is a commercial quantum computing company that provides customers with a full suite of professional services and web-based access to its superconducting quantum computer systems and integrated software environment through its cloud service, LeapTM. References to the “Company” in these D-Wave Systems Inc. Notes to Condensed Consolidated Financial Statements (Unaudited) for the periods before April 14, 2020, shall be to D-Wave Inc., a federally incorporated corporation and its subsidiaries, collectively. References to the “Company” from April 14, 2020 to December 31, 2020 (inclusive) shall be to DWSI Holdings Inc. and its subsidiaries, collectively. References to the “Company” herein for the periods including and after January 1, 2021, shall be to D-Wave Systems and its subsidiaries, collectively. Historically, the Company has developed its own annealing superconducting quantum computer systems and associated software and its current-generation quantum system is the D-Wave AdvantageTM. During the year ended December 31, 2021, the Company initiated the development of a gate-model quantum computing system. D-Wave Systems is a British Columbia corporation headquartered in Burnaby, British Columbia, and is an indirect subsidiary of D-Wave as a result of the Business Combination, as described in more detail in Note 12—Subsequent events. For the three and six month periods ended June 30, 2022 and 2021, the Company’s revenue was derived primarily from customers located in the United States, Japan, and Germany.	1. Description of business D-Wave Systems Inc. (“D-Wave” or the “Company”), previously DWSI Holdings Inc. (“DWSI”) is a commercial quantum computing company that provides customers with a full suite of professional services and web-based access to its superconducting quantum computer systems and integrated software environment through its cloud service, LeapTM. Historically, the Company has developed its own annealing superconducting quantum computer systems and associated software and its current-generation quantum system is the D-Wave AdvantageTM. During the year ended December 31, 2021, the Company initiated the development of a gate-model quantum computing system. References to the “Company” herein for the periods before April 14, 2020, shall be to D-Wave Inc., a federally incorporated corporation (“Old D-Wave”) and its subsidiaries, collectively. References to the “Company” from April 14, 2020 to December 31, 2020 (inclusive) shall be to DWSI and its subsidiaries, collectively. References to the “Company” herein for the periods including and after January 1, 2021, shall be to D-Wave Systems Inc. and its subsidiaries, collectively. D-Wave is a British Columbia corporation headquartered in Burnaby, British Columbia. On February 7, 2022, DPCM Capital Inc., a Delaware corporation (the “SPAC” or “DPCM”), and D-Wave entered into a definitive Transaction Agreement by and among DPCM, D-Wave, D-Wave Quantum Inc., a Delaware corporation and a direct, wholly owned subsidiary of SPAC (the “Issuer”), DWSI Holdings Inc., a Delaware corporation and a direct, wholly-owned subsidiary of the Issuer (“Merger Sub”) and a separate entity from the former DWSI, DWSI Canada Holdings ULC, a British Columbia unlimited liability company and a direct, wholly-owned subsidiary of the Issuer (“CallCo”), D-Wave Quantum Technologies Inc., a British Columbia corporation and a direct, wholly-owned subsidiary of CallCo, pursuant to which, among other things: a) Merger Sub will merge with and into DPCM, with DPCM surviving as a direct, wholly owned subsidiary of the Issuer, and b) D-Wave will become an indirect subsidiary of the Issuer (the “Merger”). For the years ended December 31, 2021 and 2020, the Company’s revenue was derived primarily from customers located in the United States, Japan, and Germany.

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- Definition

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI https://asc.fasb.org/topic&trid=2134479

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