Quantum Computer Works With More Than Zero and One As we all learn from early on, digital computers work with zeros and ones, also known as binary information. This approach has worked well. In fact, it has been so successful that computers now power everything from coffee machines to self-driving
The Innsbruck quantum computer stores information in individual trapped calcium atoms, each of which has eight states, of which the scientists have used up to seven for computing. Credit: Uni Innsbruck/Harald RitschAs we all learn from early on, digital computers work with zeros and ones, also known as binary information. This approach has worked well.
“Working with more than zeros and ones is very natural, not only for the quantum computer but also for its applications, allowing us to unlock the true potential of quantum systems.” —Building on this incredible success, today’s quantum computers are also developed with binary information processing in mind. “The building blocks of quantum computers, however, are more than just zeros and ones,” explains Martin Ringbauer, an experimental physicist from Innsbruck, Austria.
A team of scientists has now succeeded in developing a quantum computer that can perform arbitrary calculations with so-called, thereby unlocking additional computational power with fewer quantum particles. This group is led by Thomas Monz at the Department of Experimental Physics at the University of Innsbruck.Storing information in zeros and ones is not the most efficient way of doing calculations, but it is the simplest way.
On the flip side, many of the tasks that need quantum computers, such as problems in physics, chemistry, or material science, are also naturally expressed in the qudit language. Rewriting them for qubits can often make them too complicated for today’s quantum computers. “Working with more than zeros and ones is very natural, not only for the quantum computer but also for its applications, allowing us to unlock the true potential of quantum systems,” explains Martin Ringbauer.
Reference: “A universal qudit quantum processor with trapped ions” by Martin Ringbauer, Michael Meth, Lukas Postler, Roman Stricker, Rainer Blatt, Philipp Schindler and Thomas Monz, 21 July 2022,
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