Industry & Era
Quantum Cloud Computing
Accessing real or simulated quantum computers remotely over the internet, the primary way most people interact with quantum hardware today.
Definition
Quantum cloud computing refers to the model where users submit quantum circuits over the internet to be run on remote quantum hardware (or high-fidelity simulators), then receive results back — similar in concept to classical cloud computing, and currently the primary way most researchers and developers access real quantum processors.
In depth
Quantum cloud computing lets anyone with an internet connection run programs on real quantum hardware. IBM opened the field in 2016 by putting a five-qubit processor online as the IBM Quantum Experience, and today IBM Quantum Platform, Amazon Braket, Microsoft Azure Quantum, and Google Cloud's marketplace give access to machines from IBM, IonQ, Quantinuum, Rigetti, IQM, QuEra, Pasqal, D-Wave, and others. Users write circuits with an SDK, submit a job, wait in a queue, and receive results, usually as counts of measured bit strings.
Access models vary. IBM offers free limited access to smaller devices and paid plans for larger ones. Amazon Braket charges per task and per shot, with additional fees for dedicated reservations, and Azure Quantum uses credits and provider pricing. Queue times range from seconds on simulators to hours or days on popular devices, and some providers offer reservations for guaranteed time. Hybrid services, such as Qiskit Runtime and Braket Hybrid Jobs, keep the classical loop of variational algorithms close to the hardware to reduce latency.
Cloud access has practical consequences. It lets students and startups experiment without owning hardware, and enables benchmarking and reproducible research. Considerations include data privacy, since circuits and results pass through the provider, sovereign requirements that have led European providers such as OVHcloud and Scaleway to offer local access, and calibration drift, which means results depend on the time of the run. For on-premises needs, companies sell systems to supercomputing centers and national laboratories.
Technical Definition
Major cloud platforms include IBM Quantum, Amazon Braket, Microsoft Azure Quantum, and individual hardware providers' own platforms, typically offering both free tiers with queue-based access to real hardware and paid tiers with priority access or dedicated time.
Visual Explanation: An Analogy
Think of quantum cloud computing like a shared, specialized laboratory equipment rental service — instead of every researcher needing their own multi-million dollar quantum computer, they remotely submit experiments to be run on shared machines and receive results back.
Key facts
| Item | Detail |
|---|---|
| First cloud device | IBM Quantum Experience, 2016, with 5 qubits |
| Major platforms | IBM Quantum Platform, Amazon Braket, Azure Quantum, Google Cloud marketplace |
| Pricing models | Free tiers, pay-per-task and per-shot, subscriptions, and reservations |
| Hybrid services | Qiskit Runtime and Braket Hybrid Jobs |
| Typical output | Counts of measured bit strings from many shots |
Where the idea comes from
After IBM's 2016 launch, Rigetti, D-Wave, and others offered cloud access, and in 2019 and 2020 Amazon and Microsoft launched marketplaces that aggregate hardware from several vendors.
Real-World Use Cases
- The standard way researchers, students, and developers interact with real quantum hardware referenced throughout our Hardware Database
- Essential infrastructure given how expensive and specialized quantum hardware remains
How it differs from related ideas
- Cloud access offers convenience and many devices, while on-premises systems give control and low latency.
- Simulators in the cloud are exact but limited in size, while hardware has noise.
- Provider queues and calibration affect reproducibility.
Frequently asked questions
Can I run a program on a real quantum computer from home?
Yes. IBM and other providers offer free or low-cost access to small quantum devices over the cloud.
How much does quantum cloud access cost?
It varies from free tiers to pay-per-shot pricing, with larger devices and reservations costing more. Check the provider's current pricing.
What is a quantum job queue?
The waiting line for running circuits on a shared device. Wait times depend on demand and the device.
Related Terms
Keep exploring
- Algorithm: Variational Quantum Eigensolver (VQE)
- Algorithm: Quantum Approximate Optimization Algorithm (QAOA)
- Hardware: IBM Heron (r1, r2, and r3)
- Hardware: IQM Garnet
- Hardware: IonQ Forte (and Forte Enterprise)
- Industry: Quantum Computing, AI, and Data Centers