A new type of qubit relaunches the quantum computer


Australian and American researchers have created a new type of qubit that will enable the production of a large-scale quantum computer. The new design of the basic unit of quantum computing is based on a flip-flop system that facilitates qubits to be interlaced at distances up to hundreds of nanometers.

Researchers at the University of New South Wales (Australia) and Purdue University (USA) have developed a new quantum computing architecture based on a new qubit concept that will allow the large-scale manufacture of chips quantum much cheaper and simpler. The research has been published in the journal Nature Communications. A quantum bit, or quantum bit, is a quantum system with two own states that can be manipulated arbitrarily. It is a system that can only be properly described by quantum mechanics, and which has only two states that can be distinguished by physical measurements.

Also understood by ‘qubit’ is the information contained in that quantum system of two possible states. In this sense, the ‘qubit’ is the minimum unit and therefore constitutive of the theory of the quantum information. It is a fundamental concept for quantum computing and for quantum cryptography, the bit quantum analogue in computing.

The new ‘qubit’ design developed under the new research is based on a flip-flop system that works without having to place the atoms in a very strict position, as with other chips. Thus, this innovative design facilitates that qubit’s are intertwined at distances up to hundreds of nanometers.

In this way, it has managed to overcome one of the problems presented by quantum computers: size. The new qubit design allows for quantum entanglement at new distances, since up to now if the qubits are too close or too far apart, there is no interlacing that allows quantum communication.

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