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Gearing-up Quantum computing using atomic-ion

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An international team of researchers has found a replacement thanks to speed up quantum computing that would pave the way for huge leaps forward in computer processing power.

Scientists from the University of Nottingham and therefore the University of Stockholm have sped-up trapped ion quantum computing employing a new experimental approach — trapped Rydberg ions; their results have just been published in Nature.

In conventional digital computers, logic gates contain operational bits that are silicon-based electronic devices. Information is encoded in two classical states (“0” and “1”) of a touch . this suggests that the capacities of a classical computer increase linearly with the number of bits. To affect emerging scientific and industrial problems, large computing facilities or supercomputers are built.

Quantum computing entanglement enhancing capacity

Quantum computing is operated using quantum gates, i.e. basic circuit operations on quantum bits (qubits) that are made from microscopic quantum particles, like atoms and molecules. A fundamentally new mechanism during a quantum computer is that the utilization of quantum entanglement, which may bind two or a gaggle of qubits together such their state can not be described by classical physics. The capacity of a quantum computer increases exponentially with the number of qubits. The efficient usage of quantum entanglement drastically enhances the capacity of a quantum computer to be ready to affect challenging problems in areas including cryptography, material, and medical sciences.

Among the various physical systems which will be wont to make a quantum computer, trapped ions have led the sector for years. the most obstacle towards a large-scale trapped ion quantum computer is that the slow-down of computing operations because the system is scaled-up. This new research may have found a solution to the present problem.

The experimental work was conducted by the group of Markus Hennrich at SU using giant Rydberg ions, 100,000,000 times larger than normal atoms or ions. These huge ions are highly interactive, and exchange quantum information in but a microsecond. The interaction between them creates quantum entanglement. Chi Zhang from the University of Stockholm and colleagues used the entangling interaction to hold out a quantum computing operation (an entangling gate) around 100 times faster than is typical in trapped ion systems.

Chi Zhang explains, “Usually quantum gates hamper in bigger systems. this is not the case for our quantum gate and Rydberg ion gates in general! Our gate might allow quantum computers to be scaled up to sizes where they’re truly useful!”

Theoretical calculations supporting the experiment and investigating error sources are conducted by Weibin Li (University of Nottingham, UK) and Igor Lesanovsky (University of Nottingham, UK, and therefore the University of Tübingen, Germany). Their theoretical work confirmed that there’s indeed no slowdown expected once the ion crystals become larger, highlighting the prospect of a scalable quantum computer.

Weibin Li, professor, School of Physics and Astronomy at the University of Nottingham adds: “Our theoretical analysis shows that a trapped Rydberg ion quantum computer isn’t only fast but also scalable, making large-scale quantum computation possible without fear about environmental noise. The joint theoretical and experimental work demonstrates that quantum computation supported trapped Rydberg ions opens a replacement route to implement fast quantum gates and at an equivalent time might overcome many obstacles found in other systems.”

Currently, the team is functioning to entangle larger numbers of ions and achieve even faster quantum computing operations.

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