By Ishmeet Singh
Quantum computing combines the principles of quantum mechanics with the power of modern computing to offer a glimpse into what technology of the future might enable about solving many of today’s technology-related problems.
For decades, computing has revolutionized nearly every aspect of human existence. From telephones to supercomputers, these technologies allow humanity to perform once impossible and simultaneously complex works.
Despite their incredible ability to complete specific tasks, there are limits to the abilities of traditional computers.
Some problems are of such a nature and complexity that rapidly developed supercomputers can take thousands or billions of years to resolve them. Hence, scientists have been examining new methods to perform these calculations.
One of the most developed methods of solving these challenges is through quantum computing.
By utilizing the principles of quantum mechanics rather than the classical physical principles of computing science, quantum computing has the potential to allow quantum computers to solve problems that conventional processing cannot approach.
Although it is in its very early stages of development, the potential of quantum computing to revolutionize industries such as medicin each through artificial intelligence shows that science and engineering in general may be the next to most affected fields.
Understanding the foundations of quantum computing offers every student and science inquirer an insight into what might be among the most exciting science-related developments of the 21st century.
What Is Quantum Computing?
Quantum computing is the use of quantum-mechanical principles to perform calculations and compute information.
Where as classical computers use bits to store and execute information, quantum computers use quantum bits, or qubits.
Classical bits only exist in a state of either 0 or 1, while qubits can exist in any combination of those two values. This unique ability of qubits is the foundation of quantum computing.
Understanding Classical Bits
To begin to understand the nature of qubits, it is helpful to first understand the way that classical bits function.
Consider a light switch. A switch can exist in either of two positions: on or off. Similarly, a classical bit exists in either of two values: 0 or 1.
These bits are what allow computers to execute programs and accomplish complex works.
However, these bits can be limited in their ability to resolve certain problems.
Quantum computing was developed as a method of offering solutions to those limitations.
What Are Qubits?
Qubits are the individual components of a quantum computer that exhibit the physics of quantum mechanics.
These can exist in a range of forms, such as superconducting circuits, trapped ions, photons, and neutral atoms.
The ability of each of these qubits to exist in a quantum state that reflects each of its possible values at the same time is the ability that quantum computing exhibits.
This ability is knwon as superposition.
Superposition
The ability of a qubit to exist in two possible states at the same time is one of the principles of quantum mechanics.
Where as a bit can exist in either a 0 or a 1, a qubit can exist in a state that reflects each of those values at the same time.
This idea defies intuition, as everyday experiences suggest that each object exists in only one state.
An example of this phenomenon is that of a coin that is spinning on a table. When a coin is lying on a table, it can exhibit either heads or tails.
When spinning, however, it exhibits both values at the same time.
While this analogy is considered to be a simplification of a science problem of much greater complexity, it is still possible to use this analogy to illustrate the differences in the abilities of quantum-mechanical objects and classical objects.
Superposition is essential to the ability of quantum computers to resolve some of problems that traditional computers would find extremely difficult.
The ability of quantum computers to use more qubits in their model implies a growth in the number of possible quantum states, which in turn implies more potential problems that can be solved.
Entanglement
Quantum computing also relies on the ability of qubits to exhibit quantum-mechanical entanglement.
Quantum entanglement is the relationship that exists among qubits such that the state of each of them can be related to the state of each of the other qubits in the system.
This relationship exists regardless of the physical distance that exists among their locations.
This concept has been proved through scientific experiments.
These relationships among qubits enable complex operations to be performed by the quantum computer.
Researchers continue to investigate methods of increasing the ability of the qubits in a quantum computer to exhibit entanglement in ways that would be advantageous to the overall functioning of the device.
Quantum Gates
Similar to the way in which classical computers use logical gates to perform calculations, quantum computing uses quantum gates.
These gates are used to manipulate the possible values of each of the qubits in ways that allow for the performance of specific calculations.
By creating a series of these quantum gates, quantum algorithms are created that specialize in solving specific problems.
Understanding how to create and develop effective quantum algorithms is an ongoing area of study and examination.
How Do Quantum Computers Differ from Traditional Computers?
One of the main ways in which quantum computers are not simply faster versions of traditional computers is in their potential advantages in solving certain problems.
Where as traditional computers can resolve problems such as browsing the internet, creating words processes, and playing videos, quantum computers can resolve such problems as:
- optimization of complex systems
- simulations of complex chemical and biological systems
- certain forms of cryptographic analysis
- mathematical calculations
Quantum computers, therefore, remain useful in solving some problems, while traditional computers still remain useful in solving others.
Potential Applications of Quantum Computing
There are many problems whose solution may develop through quantum computing.
Some of the problems whose solutions may result in developments in science involve:
- drug discovery
- improvements in science and development of new materials
- optimization of science-based processes (including food production)
Artificial Intelligence
Artificial intelligence relies on each of the data processing methods that exist in computers.
Thus, by using quantum computing methods, it may be possible to improve the efficiencies of intelligent artificial agents.
Financial Modeling
Financial institutions use computers to model complex financial systems.
By creating quantum algorithms that can model these systems, quantum computing has the potential to improve the efficiencies of the industry as a whole.
Despite the potential for developments in each of these industries, considerable quantum research is still needed before each of these applications can be perfected.
Challenges to Quantum Computing
Despite the potential of quantum computing to resolve problems in various industries, there are still several challenges to its development.
One of the main challenges to quantum computing is its requirement of absence of physical disturbances to the quantum system.
Many forms of quantum computing are sensitive to changes in temperature, vibrations, and other forms of physical energy.
Another of the quantum computing challenges involves errors in the quantum system. Because each of the qubits in a quantum computer is sensitive to errors, quantum physicists must create methods to identify and correct errors in the system.
Another of the main quantum computing development challenges involves the requirement of physical conditions to the operation of each of the quantum computing systems.
Some of the qubits required to function require environments near absolute zero in temperature to preserve the state of their electrons.
These and other challenges potentially explain why there are so many limitations to how greatly each of the quantum computers has been developed thus far in academia and in the industry.
The Current State of Quantum Computing
Quantum computing is an area of active studies and research. Many universities, governments, and industrial sectors are committed to the development of quantum computing.
While each of the quantum processors that are being developed can complete specialized algorithms, there are still considerable limits to the abilities of each of those devices.
However, currently, quantum computing is in its early stages of development.
While there are science-based applications for quantum computing in the future, each of those developments have the potential to continue to develop in ways that would even further improve technology in various industries.
While it is uncertain when each of these science and technology devices will be able to develop to the levels that were desired, it is certain that each science and industry involved in quantum computing are continuing to make developments in their fields.
Why Does Quantum Computing Matter?
Many of the technologies that exist in the industries of to-day were pioneered by each of the science and engineering developments that existed in the eras of the last century.
The printing press, the steam engine, and the internet are each of industries and science developments that have altered the way that humanity leads itir lives.
Like each of those developments, quantum computing has the potential to revolutionize the world in ways that were once impossible to conceive.
While each of the development of quantum computing has led to new ways of examining science and technology in ways that were previously limited in possibilities, it is also potential to lead to scientific discoveries that will be beneficial to every individual in every continent in the world.
Most importantly, those that study quantum computing in the early stages of education in industries such as science and engineering may be the individuals that revolutionize each of those fields in the future.
Final Thoughts
Quantum computing is perhaps the leading science-based development of the 21st century.
The use of these science-based principles to each of the new forms of computers will even further expand the science-based abilities of each of those devices.
While each of the problems that exist in the development of each of these science-based equipment may pose challenges to the rapid development of those innovations, it is certain that each of those studies and developments in each of the science industries will continue to make impactful changes in the world in the future.
It is in this future and in understanding each of these innovations that every individual of the era may find new ways to prepare for any new developments in science and engineering.
Therefore, it is certain that every individual that studies each of these science technologies in the 21st century is also the individual that may create the next great science inventions.
Stay curious in your science studies. Embrace every new discovery of science and engineering. Future discoveries await!
— Ishmeet Singh
