Physicists create the first fully mechanical qubit


A team of physicists at ETH Zürich has built the first-ever working mechanical qubit. In their paper published in the journal Science, the group describes their novel idea for creating such a qubit and how well it has worked during testing.






Researchers believe quantum computers will be able to solve many types of problems that are beyond the ability of classical computers. And while much progress has been made, the goal has still not been fully realized. One of the major sticking points is the problem of virtual qubits, such as those made using electromagnetics, which produce errors that must be corrected. The research team found another way around the problem—using mechanical qubits instead.

Instead of representing data with only ones and zeroes, qubits are able to store data in a superposition of both states. For this new study, the researchers built what they describe as a membrane similar to a drum skin that can hold information as a steady state, a vibrating state or a state that is both at once.

Noting that the real problem with virtual qubits is their short duration (they pop into existence and are gone in a flash), the researchers turned to something that would last much longer—a piezoelectric disk fixed to a sapphire base. They used it as a mechanical resonator. They then attached a qubit made of a superconducting material fixed to its own sapphire base, using a special fabrication technique they developed.


#QuantumComputing #MechanicalQubit#QuantumMechanics#PhysicsInnovation #QuantumTechnology#MechanicalEngineering#QubitBreakthrough#QuantumRevolution#ScientificDiscovery#PhysicsNews#QuantumFuture
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