1.
What is quantum cloud computing?
Quantum cloud computing makes quantum computing resources available to organizations, academia, and other users through cloud technology.
Cloud-based quantum computers run faster and have more computing power than traditional computers because they employ the principles of quantum physics in solving complex computing problems.
There are different types of quantum computers such as quantum annealers, analog quantum simulators and universal quantum computers. Quantum annealers are considered the least powerful of quantum computers but can solve optimization problems very well. Analog quantum simulators, on the other hand, are powerful systems that can solve physical and biochemical problems.
Universal quantum computers are the most powerful and widely used type of quantum computer. They are also the most difficult to build. General-purpose computing has the potential to access up to 1 million qubits (the basic unit of quantum information). However, current technology only provides access to about 100 to 400 qubits.
What does all of this have to do with blockchain technology? Because quantum computing is so powerful, it has understandably attracted attention from the blockchain community as it could be used to harm blockchain technology as we know it today.
First, it is hypothesized that quantum computing could be used to gain an unfair advantage over other proof-of-work (PoW) miners and potentially dominate blockchain mining. This puts decentralized PoW networks such as Bitcoin (BTC) and Litecoin (LTC) under the threat of centralization.
Second, quantum computing could theoretically also decrypt the encryption codes used by blockchains. This means that quantum computing can use cryptography to attack blockchain networks. However, it’s not all doom and gloom for cryptosystems, as quantum cloud computing may also offer an effective solution to protect and harden blockchains against quantum attacks.
2.
What is the difference between cloud computing and quantum cloud computing?
Quantum cloud computing applies quantum principles to distributed computing, while cloud computing uses remote servers to provide distributed computing services.
Cloud computing simply refers to the provision of services such as data storage, servers, databases and networks through the Internet. For example, organizations can choose cloud storage services to reduce hardware maintenance and other costs, rather than storing data on physical servers on-site.
Quantum cloud computing, on the other hand, is derived from quantum computing – a form of computing that uses the principles of quantum mechanics to solve complex problems. It provides users with quantum computers and access to quantum-enabled services and solutions via the cloud.
Companies using cloud computing, such as Google, Amazon, IBM and Microsoft, are also leading the way in developing quantum computers to perfect computing technology and make quantum computers accessible to more users through the cloud. For example, IBM’s Osprey quantum computer has 433 qubits. The company reportedly plans to scale up to 4,000 qubits by 2025.
Related: Cryptocurrencies and Quantum Computing: A Deep Dive into the Future of Cryptocurrencies
3.
How does quantum cloud computing work?
Similar to platform-as-a-service solutions, quantum cloud computing services work by connecting users directly to quantum processors, emulators, and simulators.
Physical quantum computers are extremely complex, making cloud-based access an ideal setup for those who need to take advantage of quantum computing power without purchasing their own machine.
According to IBM, its quantum hardware system - which is roughly the size of an average car - consists primarily of a cooling system to ensure that the superconducting processor remains at an ultra-cold ideal operating temperature.
Quantum hardware systems consist of superfluids, which can supercool the system; superconductors, which form Josephson junctions to carry charge through quantum tunneling; and qubits, which facilitate behavioral control and information transfer.
Qubits can perform an important function called superposition, which allows them to place the quantum information they hold into a superposition state, or a combination of all possible configurations of the qubit. This phenomenon allows the creation of multidimensional computational spaces that facilitate the solution of complex problems.
Another thing to understand when talking about quantum computing is the concept of entanglement – a quantum mechanical effect. Entanglement is a correlation between the behavior of two independent things. In the context of quantum entanglement, as qubits become entangled, they cause other qubits to change, allowing the system to find solutions faster than a conventional computer.
Contrary to the common misconception that quantum computing can solve complex problems by trying all possible configurations of the problem in parallel, quantum computers exploit the entanglement of qubits to explore probability. They then execute the algorithm to increase their chances of arriving at the best answer.
4.
What is the purpose of quantum cloud computing?
Quantum computing has the potential to solve previously intractable problems in various fields, such as economics, drug design and development, finance, logistics, and more.
For example, large-scale quantum cloud computing platforms can be used to solve problems related to logistics optimization and resource scheduling in business environments. In healthcare, quantum cloud computing has the potential to analyze large amounts of patient data to find the most effective treatments for specific diseases.
Additionally, in the field of cybersecurity, quantum computers can use their enhanced computing power to help combat cybercrime and data breaches. The benefits of quantum cloud computing are many. A significant benefit is that it allows organizations to gain access to the power of quantum computing without purchasing their own machines and cooling systems.
It also allows quantum researchers, such as quantum physics students and academics, to better understand quantum principles and conduct experiments without requiring access to a quantum computer.
5.
How is quantum cloud computing used?
Current applications of quantum cloud computing include applications related to quantum algorithm testing.
Specifically, quantum algorithms are created on conventional computers and tested on quantum computers to ensure feasibility. Since the technology involved in quantum computing is costly and has high barriers to entry, cloud quantum computing allows businesses and researchers to leverage the technology to explore a variety of quantum computing applications.
Quantum computing is still in its early stages of development and implementation, so adoption rates remain low. However, making this technology available through distributed cloud computing is a game-changer that opens the door to many potential applications in the future.
6.
What does the future of cloud quantum computing look like?
Experts predict that implementing cloud-based quantum computing may be more challenging than artificial intelligence, which has boomed over the past decade.
This challenge is partly due to the complex technical requirements of quantum computers. Because quantum hardware systems require extremely cold operating conditions, cloud providers will need to build dedicated spaces for quantum computers. The data centers that exist today are poorly equipped for this purpose.
Additionally, quantum computing and its associated software are still in the early stages of development and implementation, so the industry as a whole is still considered nascent. Programmers will also need to master new arithmetic and logic skills, since typical digital programming methods are very different from those required for quantum computing.
Still, experts are optimistic about the potential of cloud quantum computing and believe it could bring huge benefits to various industries including finance, logistics, healthcare and technology.
As the technology develops, it's still very likely that cloud-based quantum computing will become widely available in the near future, making it easier and more cost-effective for businesses to use this powerful technology.
Cloud companies will likely become the first batch of sub-as-a-service providers, as the service will simply extend existing offerings. If deployed and marketed effectively, quantum cloud computing could become as ubiquitous as artificial intelligence and machine learning implementations.