The new solution turns universal quantum computing closer.

 The new solution turns universal quantum computing closer. 

"Artist’s impression of the entangled logic gate built by University of Sydney quantum scientists. Credit: Emma Hyde/University of Sydney"(ScitechDaily, Scientists Unlock Quantum Computing Power by Entangling Vibrations in a Single Atom)

"Physicists at the University of Sydney have achieved a breakthrough in quantum computing by creating a universal logic gate inside a single atom." (ScitechDaily, Scientists Unlock Quantum Computing Power by Entangling Vibrations in a Single Atom)

The ability to control and entangle a single atom’s internal vibrations makes the next-generation quantum gates possible. That makes it possible to create identical data flows in the quantum gates. 

Researchers created an entangled quantum gate between complex systems. And that can be the key to the new universal quantum computing. Researchers had one problem with quantum computers. That is how to create the quantum gate that controls the information in the qubit. The difference between quantum computers and binary computers is that. Information is connected with particles in quantum computers. That means in the quantum channel, particle-form photons transport information. 

And that makes it hard to create the gate for the system. The gate, or logic gate, is the base element in computing. It uses diodes and transistors to make Boolean functions. The problem with the quantum gate is that. The system should handle data. That is connected to particles. 

Regular diodes and transistors cannot handle particles. That makes those systems very complicated. Quantum gate must handle data. That travels in the quantum bridge between superpositioned and entangled particles. So if the system pulls the quantum bridge through the system that uses quantum transistors and diodes. One version is that the quantum diodes and quantum transistors can store information that a superpositioned and entangled particle sends to the receiver. Then the system creates another superpositioned and entangled particle pair. But that requires time. 

“The general definition of a qubit as the quantum state of a two-level quantum system.” (Wikipedia, qubit)

Another problem is the error control in the quantum computer. “Using a powerful error-correcting system known as the Gottesman-Kitaev-Preskill (GKP) code — often called the “Rosetta Stone” of quantum computing — they managed to entangle vibrations of a trapped ion. This achievement drastically reduces the number of physical qubits needed, tackling one of the biggest hurdles in scaling quantum computers and bringing practical, large-scale quantum machines closer to reality.” (ScitechDaily, Scientists Unlock Quantum Computing Power by Entangling Vibrations in a Single Atom)

Entangled quantum gates are things that offer a solution to that problem. The idea is that the system splits a qubit into two parts. 

Then those entangled gates transport information into two separate quantum channels. If those channels get the same solution. That means the answer is more probable, right than wrong. If those channels get a different solution, the other answer is wrong. The key element in that process. Data that travels in those channels must be identical. There is always a possibility that an error in the data form occurs at the input stage, where the system writes data to the qubit. Detection of that kind of problem is difficult. 

The qubit can have multiple states or levels. Every single state of the qubit can be put into superposition and entanglement separately. 

 And if we think of the superposition. With 20 states, we can share information between those states. The information can be doubled, and the edge can be between states 1-10 and 11-20. Then the system splits the qubit into two parts.  Those states can turn into the strings that transport information in binary form. So, in every state, the qubit still has values 0 and 1. That means a quantum gate is basically similar to an electronic gate. But it must handle data. That is stored in the quantum states. 

https://en.wikipedia.org/wiki/Boolean_algebra

https://en.wikipedia.org/wiki/Gottesman%E2%80%93Kitaev%E2%80%93Preskill_code

https://en.wikipedia.org/wiki/Logic_gate

https://en.wikipedia.org/wiki/Quantum_logic_gate

https://en.wikipedia.org/wiki/Qubit