It can be predicted from the recent scenario that quantum computing can take over the world in the future. To justify this prediction scientists must first prove that quantum computers can provide advantages over today's conventional computers before the quantum era can officially begin, which is why IBM researchers recently undertook an experiment to achieve just that.
As per a new blog post from IBM Quantum, the company's researchers have announced a simultaneous proof and experimental verification of a new type of quantum advantage for the first time ever. They demonstrated that even today's noisy qubits had more value as a medium of storage during calculations than bits.
IBM's quantum team thinks of computation in terms of circuits, with a number of classical or quantum bits at the start of each circuit. The circuit then goes ahead through a user-written program made up of gates, with these bits set to a starting value. While different gates have different effects on these bits, in both the classical and quantum cases, the output of this type of circuit is a set of zeros and ones.
When it comes to traditional computers, these bits are on-or-off switches that interact inside gates that flip switches based on the inputs to the gate. Quantum bits or qubits, on the other hand, can have any combination of these two switch positions, and quantum gates can create states with any combination of switch positions.
The Demonstration of the Advantages of Quantum Computing
IBM Quantum researchers set out to illustrate the advantage quantum computers have over conventional computers in a recent academic work published in Nature Physics titled "Quantum advantage for computations with limited space."
They accomplished this by conducting an experiment using circuits limited to two input gates and one bit of computational/scrap space to answer the question, how would computational power differ when a computer has exposure to classical scrape space versus quantum scratch space.
The IBM researchers then demonstrated in their study that a confined classical computer cannot calculate some functions that a restricted quantum computer can. They did this by pitting an actual quantum computer against a traditional computer.
The researchers gave the classical computer in their experiment access to random Boolean gates in order to boost its computing capabilities. However, even with access to this randomness, the classical computer only succeeded 87.5 percent of the time, but a flawless, noiseless quantum computer would succeed 100 percent of the time, according to IBM's research.
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