Researchers used molecules as qubits.

   Researchers used molecules as qubits.

The use of extremely cold molecules as qubits is a quantum leap. Molecular superposition and entanglement are things, that make it easier to make qubits than use something like superpositioned and entangled photons in that mission. Molecular quantum superposition and entanglement give more freedom for researchers to make the qubits, and molecular qubits can have multiple states and levels for those states. 

If researchers use heterogenic molecules like atom chains, multiple different elements make it possible to use every single atom as the individual state for a very big qubit. In this model, that atom chain is the frame for the qubit. And the type of atoms is not the important thing. Important is that those atoms are different elements. 

The hydrocarbon chain or water molecules can make the qubit. In those systems the radiation stress makes those atoms send radiation at their frequency. And that means the spectrum line of those atoms is one individual qubit. In heterogeneous systems where multiple different elements form the qubit it's easy to separate those qubit states from each other using a spectroscope. 

"A team of Princeton physicists has achieved a breakthrough in quantum mechanics by entangling individual molecules. This research opens up new possibilities for quantum computing, simulation, and sensing. The team’s innovative use of optical tweezers to control molecules overcomes previous challenges in quantum entanglement, signaling a significant advancement in the field. Credit: SciTechDaily.com" (ScitechDaily.com/Quantum Leap: Princeton Physicists Successfully Entangle Individual Molecules for the First Time)

In a homogenous system, things like two carbon chains that are in opposite positions. Make it possible to create multi-state qubits in in computers. In those cases, laser rays make the quantum entanglement between those carbon atoms causing them to vibrate in the same frequency. 

That thing makes it possible to use internal fullerene nanotubes as the qubits. When atomic-level superpositions are made the system can start to make internal quantum states between electrons and other subatomic particles like protons and neutrons. 

The system makes superposition from the biggest to the smallest part of the system. So these kinds of systems are very complex and useful. Things like fullerene are quite easy to get. And the biggest problem is temperature. The system must deny the oscillation and outside electromagnetic effects. 

Atomic and molecule-size qubits make revolution for quantum computers. And they can be pathfinders for the new portable quantum computers. And maybe we see quantum laptops quite soon. In those room temperature systems. The system stabilizes superposition using a pressure and low-temperature combination. And the quantum processor can have two layers where carbon or some other atom chains are opposite each other. 

https://scitechdaily.com/quantum-leap-princeton-physicists-successfully-entangle-individual-molecules-for-the-first-time/