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table companies as elements track all trackers qubit records fidelity programmes funding trackers hub all trackers every live number on one page qubits physical qubit record 2 310 qubits matriq logical qubit record 8 error corrected logical qubits quantinuum logical qubit tracker counted and uncounted claims and the rules gate fidelity milestones 99 99 best two qubit gate qubit evidence the source behind every figure encoding overhead physical qubits per logical qubit programmes darpa qbi 11 companies in stage b chips act awards 5 of 9 final awards signed roadmaps what each company promised by year fault tolerant roadmap the steps to a useful corrected machine money investment tracker 113 funding deals capital markets 102 listed companies quantum stocks live prices and quotes acquisitions m a and spac deals industry patent tracker quantum ip by company with the newest filings government labs what each country s public labs publish state of quantum the dated industry monitor map about about about entangled future the dataset the largest quantum database on the planet free how to cite citation formats dated to the data methodology how records are found and checked claim your profile update your company listing accessibility accessibility statement security start here quantum safe cryptography what breaks what replaces it and when harvest now decrypt later why encrypted data is already at risk migration roadmap moving an estate to post quantum crypto nist standards ml kem ml dsa and slh dsa qkd vs pqc two answers to the same threat companies post quantum cryptography 202 companies building pqc pqc algorithms the standardised algorithms compared quantum key distribution 139 companies building qkd random number generation 42 companies building qrng search k subscribe search companies and pages esc type to search to move enter to open explore trackers dashboard api sensors security learn compare jobs news events guides glossary countries directory all companies new startups software companies consultancies usa companies uk companies china quantum all countries world map research labs universities enterprise adopters sectors quantum hubs government programs consortia hardware hardware overview qpu manufacturers control systems cryogenics cloud services components cloud providers photonic quantum sensors sensing overview magnetometers gravimeters atomic clocks navigation quantum imaging investment capital markets investment tracker quantum stocks leaderboard top funded companies top investors vcs investors incubators acquisitions funding flow dashboard industry insights industry stats stack ecosystem map market map partnership network network graph quantum stack quantum error correction photonic architectures timeline consortia programmes periodic table all trackers trackers all trackers physical qubit record logical qubit record logical qubit tracker gate fidelity milestones qubit evidence encoding overhead darpa qbi chips act awards roadmaps fault tolerant roadmap investment tracker capital markets quantum stocks acquisitions patent tracker government labs state of quantum map about about the dataset how to cite methodology claim your profile accessibility learn learn articles quantum concepts quantum glossary quantum dictionary use cases guides security quantum safe cryptography harvest now decrypt later migration roadmap nist standards qkd vs pqc post quantum cryptography pqc algorithms quantum key distribution random number generation compare jobs news latest news newsroom events conferences subscribe to newsletter resources guides in depth articles and analysis on quantum computing backed by data from our directory of 1 597 companies from beginner introductions to technical deep dives 54 guides home guides technical quantum computing benchmarking guide 2026 how to compare qpus gate fidelity clops quantum volume and the logical qubit standard why qubit count is the least useful metric and what actually predicts useful performance updated october 2026 applications quantum computing for materials science why materials science is quantum computing s killer app molecular simulation battery design catalyst discovery and drug development current limitations and realistic timelines updated october 2026 industry overview state of quantum computing 2026 a comprehensive overview of where quantum computing stands in 2026 covering company growth logical qubit milestones funding trends and upcoming ipos updated october 2026 technical quantum error correction explained how quantum error correction works who has achieved error corrected logical qubits and why encoding overhead matters includes the leaderboard of counted results as of october 2026 updated october 2026 investment quantum computing funding landscape track billions in quantum computing investment top funded companies funding by country vc investors spac mergers and ipo pipeline for 2026 updated october 2026 technology quantum computing companies by technology compare superconducting trapped ion photonic neutral atom and other quantum computing approaches leaders advantages and company counts for each technology updated october 2026 investment quantum computing stocks guide 2026 complete guide to publicly traded quantum computing companies upcoming ipos and spac mergers exchange listings and what investors should know updated october 2026 regional european quantum computing ecosystem europe s quantum computing landscape across 20 countries national programs leading companies eu funding initiatives and research hubs updated october 2026 tutorial quantum programming guide write quantum circuits in qiskit cirq and pennylane covers gates bell states grover s search vqe qaoa teleportation and running code on real hardware includes qiskit code examples and circuit diagrams throughout updated april 2026 educational quantum computing for beginners a clear introduction to quantum computing for newcomers what qubits are how quantum gates work and why it matters without the jargon updated october 2026 applications quantum computing use cases by industry real world quantum computing applications in pharma finance logistics materials science cybersecurity and more which companies serve each sector updated october 2026 hardware quantum computing hardware guide the complete quantum hardware stack qpu manufacturers control electronics cryogenic systems and enabling components who builds what updated march 2026 cloud quantum cloud platforms compared compare quantum cloud computing platforms from ibm amazon google microsoft and others available hardware pricing models and sdk support updated october 2026 technology superconducting quantum computing how transmon qubits and josephson junctions work the full company ecosystem performance benchmarks error correction status and scalability outlook for the most widely adopted quantum technology updated october 2026 technology trapped ion quantum computing the technology behind the highest fidelity quantum computers ion species paul traps laser gates all to all connectivity and the companies leading on error correction updated october 2026 technology neutral atom quantum computing optical tweezers rydberg physics and reconfigurable arrays how neutral atom platforms produced the largest logical qubit encodings what counts as error corrected plus the full company list updated october 2026 technology photonic quantum computing room temperature quantum computing using light fusion based architectures silicon photonics manufacturing and how psiquantum and xanadu plan to reach fault tolerance updated october 2026 technology silicon spin quantum computing the sleeping giant of quantum computing how electron spin qubits in silicon use cmos semiconductor fabs plus why darpa selected 3 spin qubit companies for stage b updated march 2026 technology topological quantum computing microsoft s high risk high reward bet on majorana fermions how topological protection could eliminate error correction overhead and why no logical qubit has been demonstrated yet updated october 2026 technology cat qubits bosonic quantum computing how encoding quantum information in harmonic oscillators cat qubits and gkp codes could reduce fault tolerant hardware overhead by 60 alice bob and nord quantique the biased noise advantage and the state of bosonic error correction in 2026 updated october 2026 technology nv center quantum computing nitrogen vacancy defects in diamond as qubits the only platform with millisecond coherence at room temperature how nv centers work the sensing applications and the path to scalable diamond quantum processors updated march 2026 technology quantum annealing guide the quantum technology with real commercial deployments today how d wave s 4 400 qubit annealers solve optimization problems plus the annealing vs gate based distinction updated march 2026 hardware quantum computing supply chain the complete vendor ecosystem powering quantum computers who builds dilution refrigerators control electronics lasers and photonic components the enabling technologies behind every qpu updated march 2026 applications quantum computing for finance how banks and financial institutions are preparing for quantum advantage portfolio optimization monte carlo simulation fraud detection and pqc migration timelines updated october 2026 regional quantum computing in japan japan s quantum computing ecosystem national strategy corporate r d programs from fujitsu to ntt research institutions and the waterloo to tokyo quantum corridor updated march 2026 regional quantum computing in canada home to the world s first commercial quantum computer company d wave xanadu nord quantique the waterloo corridor and canada s national quantum strategy updated march 2026 regional quantum computing in australia australia punches above its weight with global leadership in silicon spin qubits sqc diraq psiquantum brisbane and why darpa selected two australian companies for qbi stage b updated march 2026 startups quantum startups to watch in 2026 the new wave of quantum computing startups founded since 2020 emerging companies recent funding rounds technology focus areas and where the gaps remain updated march 2026 technical nisq vs fault tolerant quantum computing the quantum computing industry is transitioning from noisy near term devices to fault tolerant machines logical qubit leaderboard encoding ratios and timeline projections updated october 2026 applications quantum sensing guide the quantum technology already commercially deployed magnetometers gravimeters atomic clocks and medical imaging 100 companies building sensors that exploit quantum physics updated march 2026 technology quantum networking the quantum internet qkd quantum repeaters entanglement distribution and the path to a quantum internet companies telecom partnerships and national network programs worldwide updated march 2026 regional quantum computing in germany one of europe s largest quantum ecosystems with 110 companies munich quantum valley iqm s 1 8b spac fraunhofer institutes and eur 3b in government funding updated march 2026 regional quantum computing in france france s eur 1 8b plan quantique pasqal s neutral atom leadership alice bob s cat qubits quandela s photonic qpus and the grenoble semiconductor advantage updated march 2026 applications quantum computing for pharma drug discovery molecular simulation is quantum computing s killer app which pharma companies have quantum programs quantum chemistry software providers and an honest timeline to impact updated october 2026 enterprise enterprise quantum computing programs from jpmorgan to boeing which fortune 500 companies are building quantum readiness teams sector by sector analysis of enterprise quantum initiatives updated october 2026 investment top quantum computing investors 2026 quantum dedicated vcs strategic corporate investors and government funding programs who is funding quantum technology how much and where the money is going updated october 2026 applications quantum machine learning where quantum computing meets ai variational circuits quantum kernels software frameworks and an honest assessment of quantum advantage for machine learning updated october 2026 regional quantum computing in south korea samsung sk telecom and the chaebols driving korea s quantum ambitions national strategy semiconductor expertise and the daejeon quantum cluster updated march 2026 regional quantum computing in india india s 730m national quantum mission it services quantum practices at tcs and infosys c dac s rigetti acquisition and the world s largest stem talent pipeline updated march 2026 software quantum software landscape the quantum software stack from sdks to compilers to vertical applications qiskit cirq pennylane circuit optimizers error mitigation and the open source ecosystem updated march 2026 security quantum safe cryptography guide every organization using rsa or ecc must migrate to quantum resistant algorithms nist pqc standards migration strategy timeline and the companies helping updated march 2026 history quantum computing timeline from feynman s 1981 lecture to the first error corrected logical qubits four decades of quantum computing milestones breakthroughs and the path to fault tolerance updated october 2026 careers quantum computing careers jobs skills and how to break into quantum computing six career paths salary expectations top employers and how to start without a phd updated march 2026 ip strategy quantum patent landscape ip strategy the quantum computing patent gold rush filing trends by region top holders key technology areas startup filing strategies and how vcs evaluate ip portfolios updated march 2026 rankings top 25 quantum computing companies 2026 a data driven ranking of the top 25 quantum computing companies by technical progress funding and market position covers ibm google ionq quantinuum psiquantum and the emerging leaders updated october 2026 investment most funded quantum startups 2026 the top 20 quantum computing companies by total disclosed funding from psiquantum s 1 67b to nord quantique with investor profiles geographic breakdown and technology analysis updated october 2026 stocks best quantum computing stocks to watch 2026 currently trading quantum stocks ionq qbts rgti qubt infq arqq and the 2026 ipo and spac pipeline including xanadu iqm quantinuum and seeqc not financial advice updated march 2026 investment top 20 quantum computing investors 2026 the most active and influential quantum computing investors in 2026 specialized quantum vcs corporate venture arms sovereign wealth funds accelerators and government programs ranked by portfolio and strategic importance updated october 2026 rankings fastest growing quantum companies 2026 quantum companies demonstrating the most rapid growth in 2025 2026 by technical milestones funding momentum darpa qbi validation and public market listings includes iceberg quantum quera alice b...