Quantum computers

Samskruthi S Patil, M. Vijayalakshmi

Quantum computing uses the phenomena of quantum mechanics to perform operations on data and it’s a huge leap in the field of computation. A quantum computer is a computational device which uses quantum mechanical phenomena like superposition and entanglement of atoms, photons, electrons. The difference between Quantum computers and digital computers is that digital computers are based on transistors and require data to be encoded into binary digits (bits). Quantum computers use quantum bits (qubits) and use quantum properties to represent data. Quantum computers can solve certain computational problems like integer factorization faster than classical computers. Quantum computers can solve certain problems that no classical computer could solve in any feasible amount of time. The Quantum Computing Market was valued at USD 89M in the year 2016 and is expected to reach USD 949M by 2025. Industry leaders are trying to develop and launch an actual quantum computer and make it available for everyone. Many companies are working in this area and are providing platforms to build quantum algorithms. There could be around 2,000 to 5,000 quantum computers in the world by 2030. This paper provides an introduction to quantum computing, quantum mechanical phenomena used in quantum computing and quantum computing service providers

Palash Dutta Banik, Asoke Nath

Quantum Computing is relatively new and it's kind of a special type of computing that uses the laws of quantum physics. In classical computing, we have some limitations and we can overcome those with the help of Quantum Computing as it uses qubits, but we need to keep those qubits at low temperature. Quantum Computing uses the probabilistic nature of electrons. The power of a quantum computer increases exponentially with the number of qubits linked tougher. Quantum computers are very difficult to make but there are a huge number of calculations that can be done easily with the use of a quantum computer. Quantum computers are way better and faster than classical computers. So, we can say that quantum computers rather than quantum computing will be used in the near future to replace classical computing.

Jon Schiller

Stanley Gudder

Gui Lu Long

Quantum computers exploits quantum entanglement and provides more computing power. Duality quantum computer is a new type of quantum computer that exploits the particle wave duality of quantum mechanics. In a duality computer, the computing gates need not be unitary. This provides more flexibility and familiarity to computer scientists. Here we use the unsorted database search problem as an example to show how to construct search algorithms in quantum computer and duality quantum computers.