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Title : Stable Qubits Bring Us A Step Closer To Quantum Computers
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Stable Qubits Bring Us A Step Closer To Quantum Computers

id = " Although quantum computing promises to revolutionize information technology, the field still has a long way to go. Quantum states allow faster and more complex calculations, but they are very fragile.
Now, researchers at the Niels Bohr Institute have shown that it is possible to have a "robust" quantum state, leaving the quantum information intact. The state, called Majorana zero mode, spans a nanowire, and quantum information is stored across separate locations, so measuring in one place does not affect the state. Quantum computers rely on quantum bits, or qubits of where the information is not only stored in 0s or 1s individual but also in a superposition of states, a combination of 0s and 1s. This property allows more computing power. Unfortunately, this property is not stable. When taking a measurement, the quantum state collapses superpositioned in a 0 or a 1, and the qubit is again a bit standard. In the Majorana zero mode, the information is stored in such a way that alterations in any location at either end of the nanowires leave the "protected" against changes overall. "We are investigating a new type of particle, called a mode zero Majorana, which can serve as a basis for quantum information that is protected as a special and who knows, perhaps unique property of these particles, "said professor Charles Marcus, co-author of the research, said in a statement . [To be updated after embargo lifts] "Majorana particles as particles do not exist on their own, but can be created using a combination of materials involving superconductors and semiconductors." The state was created in a semiconductor nanowire-10 micro-long and 0.1 microns thick, which is then coated with aluminum superconductor. Then the nanowire was cooled to near absolute zero and exposed to strong magnetic field. The Majorana zero mode formed under these conditions. "The protection is related to the exotic mode property Majorana that exists simultaneously at both ends of the nanowires, but not in the middle," says Sven Albrecht, lead author of the paper published this week in Nature . "To destroy its quantum state, you have to act at both ends at the same time, which is unlikely." The study shows for the first time the properties of this particle, which has only been observed in 2012. The team is confident that the use of this new material and technique will allow the field to develop faster than before.
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