Selection of quantum information technology companies, or groups within companies.

Extras: 1) pure-play shares publicly traded, 2) quantum computers you might be able to buy, 3) concrete qubit-count roadmaps.

Companies

1QBit  A*Quantum  Adaptive Finance Technologies  AegiQ  Agnostiq  Algorithmiq Alibaba Quantum Lab  Alice & Bob  Aliro Amazon Braket  AngelQ  Anyon Systems, Inc.  ApexQubit  AQT  aQuantum  Archer  Arclight  Arqit  Artificial Brain  Artiste-qb Net  Atom Computing Atos Quantum Lab  Avanetix  Axion Technologies Baidu Quantum Computing Institute  BardeenQ Labs  BEIT Inc.  Black Brane Systems  Bleximo  blueqat  BosonQ Psi  Boxcat Inc.  BraneCell  C12  CIQTEK  Classiq  CogniFrame Inc.  ColdQuanta  Craft Prospect  Crypta Labs  Crypto Quantique  D-Wave  Delft Circuits  Diraq  EeroQ  eleQtron  Elyah ♦ Entangled Networks  Entanglement, Inc.  Entanglement Partners  Entropica Labs  Equal 1  exaQ.ai Google Quantum AI Groovenauts  h-bar  Horizon Quantum Computing  HQS Quantum Simulations Huawei HiQ IBM Quantum  ID Quantique (SK Telecom)  Iff Technologies  InfiniQuant  infinityQ Technology Inc. Ingenii Intel Labs / Quantum Computing IonQ  IQM  ISARA  JoS QUANTUM  J.P. Morgan FLARE / Quantum Technologies  KetPsiShield  KETS Quantum Security  Kipu Quantum  Kuano  Kunfeng Quantum  LIGENTEC  Light Rider  MagiQ Technologies  Maybell Quantum Industries  Menten AI  Microsoft Quantum  Miraex  Molecular Quantum Solutions  Multiverse Computing  Netramark  Next Generation Quantum  nodeQ  Nord Quantique  Nordic Quantum Computing Group  Nu Quantum  ODE, L3C  Orange QS  ORCA Computing  Origin Quantum  Oxford Ionics  Oxford Quantum Circuits  ParityQC  Pasqal  Phasecraft  Photonic Inc  PiDust Quantum  Polaris Quantum Biotech  PQSecure  ProteinQure  PsiQuantum  Q.ANT  Q-CTRL  Qapitan Quantum  Qasky  QBaltic  QBee.eu  Qblox  QBoson  qBraid  QC Ware  Qedma Quantum Computing  Qilimanjaro Quantum Tech  Qkrishi  QMware  QphoX  QpiAI  QRate  Qrypt  qtlabs  Qu & Co  Quacoon  Quandela  Quantastica  QuantCAD  QuantFi  QuantGates  QuantLR  Quantinuum  Quantopticon  QuantrolOx  Quantropi  Quantum Base  Quantum Benchmark  Quantum Blockchains Inc.  Quantum Blocks  Quantum Bridge Technologies  Quantum Brilliance  Quantum Circuits, Inc.  Quantum Computing Inc.  Quantum eMotion ♦ Quantum Factory  Quantum Machines  Quantum Mads  Quantum Motion Quantum-South ♦ Quantum Thought  Quantum Xchange  QuantumCTek  QuantWare  QuantyCat  Quanvia  Quarks Interactive  Qubit Engineering  Qubit Pharmaceuticals  Qubitor  Qudoor  QuEra  QuintessenceLabs  QuiX  Qulabs  QunaSys  Qunnect  QuNu Labs  QuSecure  Quside  QuTech  Rahko  Raytheon Quantum Engineering and Computing  Rigetti Computing  Riverlane  SandboxAQ  SavantX Seeqc  Semicyber  seQre  Silicon Quantum Computing  softwareQ  SpeQtral  SpinQ  SpinUp AI  Strangeworks  Super.tech  Tencent Quantum Lab  Terra Quantum  Toshiba Quantum Information Group TuringQ  Unitary Zero Space  Universal Quantum  VeriQloud  Xanadu  Xofia  XT Quantech  Zapata Computing  ZCWei Quantum  Zurich Instruments

Pure-play shares publicly traded

Arqit

D-Wave (later)

IonQ

Quantinuum (later)

Quantum Computing Inc.

Quantum eMotion

QuantumCTek

Rigetti Computing

Quantum computer for home

CIQTEK (experimenting rather than programming)

Equal 1 (not yet available for public)

Quantum Brilliance (not yet available for public)

SpinQ (fully programmable)

Qubits roadmap

Alice & Bob 2026: “ideal quantum processor”

Atom Computing 2021: 100

Diraq ~2025: 100, ~2028: 1,000, 2035-40: 1,000,000, 2050: 1,000,000,000

Google 2029: 1,000,000

IBM 2022: 433, 2023: 1,121, 2024: 1,386+, 2025: 4,158+, 2030: 1,000,000

Origin Quantum 2022: 144, 2025: 1,024, 2028: 10,000, 2032: 1,000,000

Pasqal 2022: 100, 2023: 1,000

PsiQuantum ~2025: “begin assembling” 1,000,000

QBoson 2024-2025: 1,000,000 (“coherent quantum computing”)

Quantum Brilliance ~2025: ~50 (“Quantum Accelerator”)

QuEra 2024: 1,024

Rigetti Computing 2023: 336, 2025: 1,000+, ~2027: 4,000+

Xanadu 2026: 1,000,000