quantum computing timeline for practical applications

Quantum Computing's Path to Practical Applications: A Technical Forecast

Major quantum players have established ambitious roadmaps with significant milestones expected between 2025-2040, though technical challenges remain in scaling qubit counts and reducing error rates.

Market Overview

The quantum computing landscape is currently characterized by significant investment and ambitious roadmaps, with major players positioning themselves for the transition from research to practical applications. As of mid-2025, quantum computing remains primarily in the research phase, with billions of dollars in funding from both government and corporate sources driving development. Google CEO Sundar Pichai recently compared quantum computing's current state to artificial intelligence in the 2010s, suggesting practical quantum computers are still five to ten years away. This assessment aligns with the broader industry consensus that places commercially viable quantum applications on a 2030-2035 timeline, though some more optimistic projections suggest earlier breakthroughs.

The market is seeing accelerated development schedules from key players like IBM, which has outlined a roadmap through 2033 targeting a quantum-centric supercomputer with over 4,000 qubits by the end of 2025. Meanwhile, Google maintains its goal of creating a useful, error-corrected quantum computer by 2029, building on their 2019 quantum supremacy demonstration with the 53-qubit Sycamore processor. These timelines reflect the industry's push toward quantum utility, though significant technical hurdles remain before widespread commercial applications become viable.

Technical Analysis

The technical progression toward practical quantum computing applications follows several critical paths, with qubit scaling being the most visible metric. Current leading systems operate with dozens to hundreds of physical qubits, but most experts agree that practical applications will require hundreds of thousands to millions of qubits. This is primarily due to the requirements of quantum error correction, where multiple physical qubits must work together to create stable logical qubits.

IBM's technical roadmap emphasizes circuit quality improvements to run 5,000 gates with parametric circuits, while developing modular architectures like the IBM Quantum System Two that could theoretically support up to 16,632 qubits. Google has achieved a significant milestone with their logical qubit prototype, demonstrating error reduction by increasing physical qubit counts. Both approaches acknowledge that raw qubit numbers alone are insufficient; gate fidelity, coherence times, and error correction capabilities are equally crucial technical benchmarks.

Assuming an exponential growth pattern similar to Moore's Law in classical computing, with qubit counts doubling annually (the middle-ground projection between pessimistic and optimistic scenarios), we can expect the first practical applications to emerge between 2033 and 2040. This timeline depends heavily on simultaneous progress in multiple technical domains including algorithmics, software development, gate accuracy improvements, error correction techniques, and supporting infrastructure like cryogenic systems.

Competitive Landscape

The race toward practical quantum computing applications features several distinct approaches and competitive strategies. IBM has established itself as a leader in superconducting qubit technology with a clear public roadmap and regular milestone achievements. Their focus on quantum-centric supercomputing aims to integrate quantum and classical resources for hybrid computing solutions, targeting near-term advantage in chemistry and materials science applications.

Google's approach emphasizes achieving quantum error correction at scale, with their 2029 target for a useful error-corrected quantum computer representing one of the more aggressive timelines among major players. Their recent breakthrough with a quantum chip solving a problem in minutes that would take classical supercomputers longer than the universe's age demonstrates their technical capabilities, though practical applications remain distant.

Other significant competitors include Microsoft's topological qubit approach (which promises more stable qubits but has faced development challenges), IonQ's trapped-ion technology (offering higher coherence times but slower gate operations), and Rigetti's full-stack approach. Chinese companies and research institutions are also making substantial investments, particularly in quantum communications infrastructure.

The competitive landscape is further complicated by the emergence of quantum-inspired classical algorithms and specialized quantum simulators that may deliver some quantum-like advantages on classical hardware before full quantum computers reach maturity.

Implementation Insights

Organizations preparing for the quantum era should adopt a staged approach to implementation planning. In the 2025-2030 timeframe, the focus should be on quantum readiness assessments, algorithm development, and workforce training. This includes identifying potential use cases in optimization, simulation, and machine learning that align with organizational needs and could benefit from quantum acceleration.

For the 2030-2035 period, early adopters should prepare for limited-scale quantum advantage in specific domains like materials science, chemical simulation, and certain optimization problems. This will likely involve hybrid classical-quantum workflows rather than pure quantum solutions. Implementation will require specialized expertise in quantum algorithm development and the ability to translate domain-specific problems into quantum-compatible formulations.

Beyond 2035, as error-corrected quantum computers become more widely available, implementation considerations will shift toward integration with existing IT infrastructure, security implications (particularly for cryptography), and scaling quantum solutions across the enterprise. Organizations should establish quantum centers of excellence now to build the necessary expertise and use cases gradually as the technology matures.

A critical implementation consideration is the quantum threat to current cryptographic systems. Organizations should begin implementing quantum-resistant cryptography well before large-scale quantum computers arrive, as data encrypted today may be vulnerable to future quantum attacks.

Expert Recommendations

Based on current development trajectories and technical assessments, organizations should adopt a pragmatic approach to quantum computing preparation:

1. Establish quantum literacy programs for technical teams to build foundational understanding of quantum algorithms and potential applications relevant to your industry. This doesn't require deep quantum physics knowledge but should focus on practical problem formulation.

2. Identify quantum-amenable problems within your organization that align with the expected timeline of quantum advantage. Focus on areas where classical computing struggles, such as complex simulation, optimization with many variables, or machine learning with high-dimensional data.

3. Engage with quantum ecosystem partners including cloud quantum service providers, algorithm developers, and industry consortia. This provides access to quantum resources without major capital investments and keeps your organization informed of breakthrough developments.

4. Develop a quantum security transition plan that includes an inventory of cryptographically protected assets and a roadmap for implementing post-quantum cryptography standards. The National Institute of Standards and Technology (NIST) has already selected initial algorithms for standardization.

5. Maintain realistic expectations about quantum timelines. While significant progress continues, the 2035-2040 window represents the most probable timeframe for widespread practical applications. Organizations should balance preparedness with patience, avoiding both complacency and premature investment in applications that remain technically distant.

Frequently Asked Questions

Based on current projections, quantum computers capable of breaking widely-used RSA and ECC encryption would require approximately 1 million high-quality physical qubits (or thousands of logical qubits). Following the middle-ground projection of qubit counts doubling annually, this capability could emerge between 2030-2035. However, this timeline assumes continued progress in error correction and algorithm efficiency. Organizations should implement quantum-resistant cryptography well before this threshold, as NIST's post-quantum cryptography standards are already being finalized for deployment.

The first practical quantum applications will likely emerge in chemistry simulation and materials science, where even modest quantum advantages can deliver significant value. Specifically, quantum simulation of molecular structures for drug discovery and catalyst development could become viable with 1,000-10,000 high-quality qubits (expected around 2030-2033). Optimization problems in logistics, portfolio management, and energy distribution represent the second wave of applications, requiring more qubits but potentially delivering substantial economic benefits. Machine learning applications may follow, though hybrid quantum-classical approaches will dominate the early implementation landscape.

IBM's approach focuses on scaling physical qubit counts while simultaneously improving circuit quality, targeting a quantum-centric supercomputer with over 4,000 qubits by the end of 2025. Their modular architecture (IBM Quantum System Two) aims to support up to 16,632 qubits, with an emphasis on near-term quantum utility in chemistry and materials science through hybrid computing models. Google, meanwhile, has prioritized achieving error correction milestones, targeting a useful error-corrected quantum computer by 2029. They've demonstrated a logical qubit prototype showing error reduction through increased physical qubit counts. While IBM's strategy may deliver limited application advantages sooner, Google's focus on error correction addresses a fundamental requirement for large-scale practical applications.

Recent Articles

Sort Options:

IBM is building a large-scale quantum computer that 'would require the memory of more than a quindecillion of the world's most powerful supercomputers' to simulate

IBM is building a large-scale quantum computer that 'would require the memory of more than a quindecillion of the world's most powerful supercomputers' to simulate

IBM has unveiled its ambitious roadmap to develop the world's first large-scale, fault-tolerant quantum computer by 2029, marking a significant milestone in quantum computing technology and innovation. This advancement promises to revolutionize various industries and scientific research.


What is the significance of IBM's large-scale quantum computer requiring the memory of more than a quindecillion supercomputers to simulate?
This highlights the immense computational power and complexity of IBM's quantum computer. The requirement for such vast memory to simulate it underscores the potential of quantum computing to solve problems that are currently unsolvable or impractical for classical computers. This capability could revolutionize various industries and scientific research by enabling the exploration of complex quantum states beyond current limitations.
Sources: [1]
How does IBM's quantum computer achieve fault tolerance, and what are the implications for scalability?
IBM's quantum computer achieves fault tolerance through the use of quantum error correction codes, such as the bivariate bicycle code. This code encodes logical qubits into physical qubits, allowing for error correction without significantly increasing the number of qubits required. The modular architecture ensures scalability, enabling the system to grow large enough to perform meaningful computations. This approach is crucial for practical and reliable quantum computing applications.
Sources: [1]

10 June, 2025
Tom's Hardware

IBM’s Vision For A Large-Scale Fault-Tolerant Quantum Computer By 2029

IBM’s Vision For A Large-Scale Fault-Tolerant Quantum Computer By 2029

The computing giant's latest quantum roadmap outlines its ambitious plan to reach a pivotal milestone in quantum computing by the decade's end, signaling a significant advancement in the field. This development promises to reshape the future of technology.


What is the significance of IBM's plan to build a large-scale fault-tolerant quantum computer by 2029?
IBM's plan to build a large-scale fault-tolerant quantum computer by 2029 marks a significant advancement in quantum computing. This development promises to revolutionize computing by enabling the execution of 20,000 times more operations than current quantum computers, which could transform multiple industries. The computational power of such a system would require more than a quindecillion (10^48) of today's most powerful supercomputers to represent its state[1][2][3].
Sources: [1], [2], [3]
How does IBM plan to achieve fault tolerance in its quantum computer?
IBM plans to achieve fault tolerance through the implementation of quantum low-density parity check (qLDPC) codes, which significantly reduce the physical qubit overhead compared to other error-correction methods. Additionally, IBM is developing a modular design using 'C-couplers' and 'L-couplers' to connect qubits across longer distances, addressing the scaling problem in quantum computing[2][3].
Sources: [1], [2]

10 June, 2025
Forbes - Innovation

IBM Starling: 20,000X Faster Than Today’s Quantum Computers

IBM Starling: 20,000X Faster Than Today’s Quantum Computers

Summary Not Available


What makes IBM Starling significantly faster than current quantum computers?
IBM Starling's speed is largely due to its novel error correction architecture, specifically the use of low-density parity-check (LDPC) codes. This approach reduces the physical qubit requirements by about 90%, allowing for more efficient and reliable quantum operations. Additionally, its modular design enhances scalability and fault tolerance, enabling it to perform 20,000 times more operations than today's quantum computers.
Sources: [1], [2]
How does IBM plan to achieve the ambitious goal of building Starling by 2029?
IBM has outlined a clear roadmap with specific milestones, including the development of intermediate systems like Loon, Kookaburra, and Cockatoo before the final implementation of Starling in 2029. The company is also investing in a new Quantum Data Center in Poughkeepsie, New York, to support this project. The modular design of Starling, using 'C-couplers' and 'L-couplers', will help solve the scaling problem in quantum computing.
Sources: [1], [2]

10 June, 2025
Forbes - Innovation

20 Real-World Applications Of Quantum Computing To Watch

20 Real-World Applications Of Quantum Computing To Watch

Various industries are investigating the potential of quantum technology to address complex challenges that traditional computers find difficult to solve, highlighting both its promising solutions and potential risks. This exploration marks a significant shift in technological capabilities.


What are the key differences between quantum computing and traditional computing?
Quantum computing differs from traditional computing by leveraging quantum mechanics to process information. Unlike classical bits, which are either 0 or 1, quantum bits (qubits) can exist in multiple states simultaneously, enabling parallel processing and solving complex problems more efficiently. This capability allows quantum computers to tackle challenges that are difficult or impossible for traditional computers to solve.
Sources: [1], [2]
How might quantum computing impact security and encryption?
Quantum computing poses a significant risk to current encryption methods, such as RSA, because it can factor large numbers quickly. This has led to the development of quantum-resistant encryption algorithms to protect data from potential quantum attacks. On the other hand, quantum computing can also enhance security by simulating complex systems and predicting potential vulnerabilities.
Sources: [1], [2]

09 June, 2025
Forbes - Innovation

The Quantum Clock Is Ticking: Is Waiting An Option For Enterprises?

The Quantum Clock Is Ticking: Is Waiting An Option For Enterprises?

As quantum computing approaches, organizations prioritize quantum security by focusing on post-quantum cryptography (PQC) and quantum key distribution (QKD) to safeguard data against future threats. This proactive approach highlights the urgency of securing digital information in a quantum era.


What is post-quantum cryptography (PQC), and why is it important for enterprises?
Post-quantum cryptography (PQC) refers to cryptographic techniques designed to be secure against attacks by both classical and quantum computers. It is crucial for enterprises as it provides a safeguard against potential quantum attacks that could compromise current encryption methods, ensuring data security in a future where quantum computing becomes viable (Booz Allen, n.d.; Entrust, n.d.)[1][4].
Sources: [1], [2]
How do enterprises prepare for the transition to post-quantum cryptography?
Enterprises can prepare for the transition to post-quantum cryptography by adopting a hybrid approach, which involves using traditional algorithms like RSA and ECC alongside new PQC algorithms. This method allows for current use cases while testing IT ecosystems against PQC algorithms, ensuring a smooth transition to quantum-resistant cryptography (Entrust, n.d.)[4].
Sources: [1]

06 June, 2025
Forbes - Innovation

Quantum computing startup wants to launch a 1000-qubit machine by 2031 that could make the traditional HPC market obsolete

Quantum computing startup wants to launch a 1000-qubit machine by 2031 that could make the traditional HPC market obsolete

Nord Quantique aims to revolutionize quantum computing with a utility-scale machine featuring over 1,000 logical qubits by 2031. Their compact, energy-efficient design could outperform traditional HPC systems, potentially transforming cybersecurity and high-performance computing landscapes.


What is the significance of a 1000-qubit quantum machine in comparison to traditional HPC systems?
A 1000-qubit quantum machine, like the one proposed by Nord Quantique, could significantly outperform traditional high-performance computing (HPC) systems due to its ability to process complex calculations exponentially faster. This is because quantum computers use qubits that can exist in multiple states simultaneously, allowing them to solve problems much quicker than classical computers, which rely on bits that can only be in one of two states at a time[1][3].
Sources: [1], [2]
How could a compact, energy-efficient 1000-qubit quantum machine impact cybersecurity and HPC landscapes?
A compact and energy-efficient 1000-qubit quantum machine could revolutionize cybersecurity by enabling faster and more secure encryption methods, potentially rendering current encryption standards obsolete. In HPC, it could solve complex problems in fields like medicine and finance much faster than traditional systems, leading to breakthroughs in these areas. The energy efficiency would also reduce operational costs and environmental impact[2][3].
Sources: [1], [2]

01 June, 2025
TechRadar

How close is quantum computing to commercial reality?

How close is quantum computing to commercial reality?

Experts at a recent event discussed advancements in logical qubits and their potential applications in enhancing business IT. This exploration highlights the transformative impact of quantum computing on the future of technology and enterprise solutions.


What are logical qubits and why are they important for commercial quantum computing?
Logical qubits are error-corrected qubits that form the basis for reliable quantum computation. They are crucial because physical qubits are prone to errors, and logical qubits enable the construction of fault-tolerant quantum computers that can perform complex calculations needed for commercial applications.
Sources: [1]
How soon can businesses expect to use quantum computing for practical applications?
Commercial adoption of quantum computing is beginning now, with tech giants like Microsoft, Amazon, Google, and IBM partnering with startups to offer quantum cloud services. Hybrid quantum-classical approaches are already being deployed in industries such as manufacturing. The US has an eight-year plan aiming for industrially useful quantum computers by 2033, indicating steady progress toward practical business use within the next decade.
Sources: [1], [2]

15 May, 2025
ComputerWeekly.com

Cooking Up Quantum Computing: Is It Dinnertime Yet?

Cooking Up Quantum Computing: Is It Dinnertime Yet?

Quantum computing remains a topic of debate, with some experts viewing it as an emerging technology lacking practical applications, while others assert it is fully developed and ready for implementation. The discussion highlights the contrasting perspectives within the field.


What is quantum computing and how does it differ from classical computing?
Quantum computing is a type of computing that uses quantum bits or qubits, which can represent and process information in ways that classical bits cannot. Unlike classical computers that use bits as 0s or 1s, qubits can exist in multiple states simultaneously due to quantum superposition, enabling potentially exponential increases in processing power for certain problems. Quantum computers also leverage entanglement and quantum interference to perform complex calculations more efficiently than classical computers in specific applications.
Sources: [1]
Why is there debate about whether quantum computing is ready for practical use?
The debate stems from differing views on the maturity of quantum computing technology. Some experts see it as an emerging technology still in early development stages, with challenges such as error rates, qubit stability, and scalability yet to be fully overcome. Others argue that quantum computing has reached a level of development where it is ready for implementation in practical applications, citing recent advances in quantum error correction, specialized hardware, and real-world projects in industries like finance and biomedicine. This contrast reflects ongoing progress and the complexity of transitioning from experimental systems to commercially viable quantum computers.
Sources: [1], [2]

14 May, 2025
Forbes - Innovation

The Realistic Path To Quantum Computing: Separating Hype From Reality

The Realistic Path To Quantum Computing: Separating Hype From Reality

Excitement surrounds anticipated breakthroughs in encryption, pharmaceuticals, and financial modeling, as experts highlight the transformative potential of these advancements. The publication explores how these innovations could reshape industries and enhance security and health outcomes.


How do quantum computers differ from classical computers in terms of processing information?
Quantum computers process information using qubits, which can exist in multiple states simultaneously (superposition) and be entangled, allowing for complex calculations and parallel processing. In contrast, classical computers use binary bits that are either 0 or 1, processing information sequentially.
Sources: [1]
What are some potential applications of quantum computing that could transform industries?
Quantum computing has the potential to transform industries such as encryption, pharmaceuticals, and financial modeling. It could enhance security by breaking current encryption methods and developing new quantum-resistant ones, improve health outcomes by simulating complex molecular interactions, and optimize financial models more efficiently than classical computers.
Sources: [1]

07 May, 2025
Forbes - Innovation

Meet the companies racing to build quantum chips

Meet the companies racing to build quantum chips

Quantum computing is poised to transition from theory to commercial reality, with companies aiming to tackle complex challenges in medicine, cybersecurity, materials science, and chemistry. The authors explore the potential breakthroughs that could redefine technological capabilities.


What is quantum computing, and how does it differ from classical computing?
Quantum computing is a field that leverages the principles of quantum mechanics to solve complex problems. Unlike classical computers, which use binary bits (0s and 1s), quantum computers use qubits that can exist in multiple states simultaneously (superposition) and can be entangled, allowing for parallel processing and more efficient computation of certain tasks[1][2][4].
Sources: [1], [2], [3]
What are some potential applications of quantum computing?
Quantum computing has potential breakthroughs in medicine, cybersecurity, materials science, and chemistry. It can efficiently run optimization algorithms, simulate complex quantum systems, and potentially break certain encryption methods, leading to the development of quantum-resistant encryption[2][5].
Sources: [1], [2]

28 April, 2025
TechCrunch

An unhandled error has occurred. Reload 🗙