Skip to content
DefDex
Atom Computing logo

Startup · United States

Atom Computing

HQ BerkeleyFounded 201851-200 employees

Atom Computing is a pioneering company in the field of quantum computing, specializing in building highly scalable, gate-based quantum computers using arrays of optically-trapped neutral atoms. Their technology is designed to deliver universal quantum computers with large numbers of error-corrected qubits, long coherence times, and optimized connectivity, aiming to unlock computational breakthroughs for commercial and scientific applications. Atom Computing’s flagship system, the AC1000, features over 1,200 fully-connected qubits, positioning the company at the forefront of the logical qubit era. The company has also been recognized for its collaborations, such as with Microsoft, and was recently selected by DARPA to advance utility-scale quantum computing with neutral atoms.

Startup
Website
Total raised
~$279M
6 rounds
Last round
~$89.1M
Series D · Jul 8, 2026
Systems
1

Funding6 rounds · ~$279M

Equity raised
~$279M
Latest
~$89.1MSeries D · Jul 8, 2026
Last valuation
$2.06B?Basis not stated · Series D · Jul 8, 2026
Cumulative raised$274M
Jul 21, 2021Jul 8, 2026

Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.

Systems1

AC1000

A quantum computing system for quantum error-correction research and applications.

Maturity not rated

Newest unveiled first. Open a system for its milestone timeline, components and sources.

People4

All 4 people →
  • Ben Bloom

    Chief Executive Officer and Founder

  • Jonathan King

    Founder

  • Kevin Messerle

    Chief Financial Officer

  • Rob Hays

    CEO and President

Hiring Observations10 observed listings

View all 45 listings →

A sample of observed listings, not a total vacancy count. Availability may have changed since collection. Categories are inferred from job titles.

Sources25

Show all 25 sources and supporting evidence

Profile3

  1. 1
    CompanyJanuary 2018 - Atom Computing Founded

    atom-computing.com · Supports Organization · founded year

    “January 2018 - Atom Computing Founded”
  2. 2
    OtherAtom Computing - Black Flag Job Board

    Black Flag · Supports Organization

    “This company develops highly scalable, gate-based quantum computers using optically-trapped neutral atoms to enable breakthroughs in commercial and scientific”
  3. 3
    DatabaseAtom Computing - LinkedIn company profile

    LinkedIn · Supports Organization · employee range

    “employee_range: 51-200 (profile: 51-200 employees)”

Systems1

  1. 4
    CompanyProduct - AC1000 - Atom Computing

    Atom Computing · Supports System

    “With highly competitive fidelities, 1,200+ physical qubits, all-to-all qubit connectivity, and advanced technical capabilities such as mid-circuit measurement with qubit reuse and reset and real-time conditional branching, Atom’s AC1000 enables users to push the limits on quantum error correction research and explore quantum applications.”

Funding8

  1. 5
    CompanyAtom Computing Raises More Than $300 Million to Accelerate Deployment of Fault-Tolerant, Neutral-Atom Quantum Computers

    Atom Computing · Jun 16, 2026 · Supports Funding round, Funding round · amount

    “The Series C round was led by Third Point Ventures, with participation from DCVC, Cisco Investments, and others.”
  2. 6
    NewsAtom Computing Picks Denmark for European Headquarters, Receives Danish Funding

    HPCwire · Jun 4, 2024 · Supports Funding round · amount

    “investment of 70 million DKK (~US$10.21 million) in Atom Computing”
  3. 7
    NewsAtom Computing Sets A World-Record Coherence Time For Neutral Atom Qubits

    Forbes · Jun 2, 2022 · Supports Funding round · amount

    “Atom Computing used its initial seed funding of $5M”
  4. 8
    CompanyAtom Computing Raises $60M Series B to Build Second-Generation Quantum Computing Systems

    Atom Computing · Jan 20, 2022 · Supports Funding round · amount

    “announced closure of a $60M Series B round. Third Point Ventures led the round”
  5. 9
    Regulatory filingAtom Computing Inc. - SEC Form D (0001798861-22-000001)

    U.S. Securities and Exchange Commission · Jan 13, 2022 · Supports Funding round

    “Total Amount Sold $58,849,929 USD”
  6. 10
    CompanyAtom Computing Unveils First-Generation Quantum Computing System - Appoints New CEO After Closing $15 Million in Series A Funding

    Atom Computing · Jul 21, 2021 · Supports Funding round · amount

    “after closing $15M in Series A funding”
  7. 11
    Regulatory filingAtom Computing Inc. - SEC Form D (0001798861-21-000001)

    U.S. Securities and Exchange Commission · Jul 20, 2021 · Supports Funding round

    “Total Amount Sold $15,999,999 USD”
  8. 12
    DatabaseAtom Computing - Forge Global company profile

    Forge Global · Supports Funding round · amount, Funding round · post money valuation usd

    “07/08/2026 Series D-1 $89.07M $3.92 $2.06B”

People2

  1. 13
    CompanyAbout - Atom Computing

    Atom Computing · Supports Role

    “Kevin Messerle is Chief Financial Officer at Atom Computing.”
  2. 14
    NewsAtom Computing - Wikipedia

    en.wikipedia.org · Supports Role

    “Atom Computing was founded by Ben Bloom and Jonathan King in 2018[\[2\]](citenote-JH-DTM-2023-2) with $5M in seed funding.[\[3\]](citenote-SC-Science-2018-3)[\[4\]](citenote-MS-QI-2019-4)”

Other11

  1. 15
    CompanyAtom Computing public job board

    Supports Job posting

    “Principal System Integration and Test Lead”
  2. 16
    OtherGeneral Application - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “General Application”
  3. 17
    OtherHardware Engineer - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Hardware Engineer”
  4. 18
    OtherLaser Engineer - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Laser Engineer”
  5. 19
    OtherOptical Engineer - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Optical Engineer”
  6. 20
    OtherQuantum Engineer - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Quantum Engineer”
  7. 21
    OtherQuantum Error Correction Software Engineer - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Quantum Error Correction Software Engineer”
  8. 22
    OtherQuantum Operations Engineer (Denmark) - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Quantum Operations Engineer (Denmark)”
  9. 23
    OtherSenior IT Systems Engineer - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Senior IT Systems Engineer”
  10. 24
    OtherSenior Software Engineer - Control Systems - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Senior Software Engineer - Control Systems”
  11. 25
    OtherSoftware Engineer - Control Systems - Atom Computing - Black Flag Job Board

    Black Flag · Supports Job posting

    “Software Engineer - Control Systems”

Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.