Instantaneous charging of quantum battery -Lithium - Ion Battery Equipment

Australia practices "second charge" quantum battery -Lithium - Ion Battery Equipment

On July 20, Dr. James Quach, an expert in quantum physics, joined the University of Adelaide in Australia as a visiting scholar to promote the practicality of quantum batteries.

Dr. Kwak graduated from the University of Melbourne and served as a researcher at the University of Tokyo and the University of Melbourne respectively. Quantum battery is a super battery with instantaneous charging capacity in theory, which was first proposed in 2013.

It is proved that, compared with the non entangled quantum, the entangled quantum has a shorter distance between the low energy state and the high energy state during the charging process. The more quantum bits, the stronger the entanglement, and the "quantum acceleration" can make the charging process faster. Suppose that it takes 1 hour to charge 1 qubit, and it takes only 10 minutes for 6 qubits.

"If there are 10000 qubits, it can be fully charged in less than a second." Dr. Kwak said.

Quantum physics studies the laws of motion at the atomic and molecular levels, so general physics cannot explain the laws of particle motion at the quantum level. The characteristic of quantum battery, which sounds like "abnormal", depends on the special "entanglement" of quantum.(Lithium - Ion Battery Equipment)

Quantum entanglement refers to that after several particles are used for each other, the properties of each particle have been integrated into a whole property, so it is impossible to describe the properties of each particle separately, but only the properties of the whole system.

"It is precisely because of entanglement that it is possible to accelerate the process of battery charging." Dr. Kwak said.

However, there are still two known problems unsolved in the practical application of quantum battery: quantum decoherence and too small storage capacity.

Quantum entanglement requires very high environment, namely low temperature and isolated system. The typical quantum system is not an isolated system, and it is impossible to keep quantum state for such a long time. As long as these conditions are changed, the quantum and the external environment will be used to weaken the quantum coherence, that is, the "decoherence" effect, and the quantum entanglement will disappear.

For the storage capacity of quantum battery, Italian physicist John Gould said in 2015: "The storage capacity of quantum system is several orders of magnitude smaller than that of daily electrical equipment. We only theoretically proved that quantum physics can accelerate when inputting energy to a system."

Even if there are still problems to be solved, Dr. Quark is still confident in the practical use of quantum batteries. He said: "Most physicists should agree with me that quantum batteries belong to the application technology that we can get at a jump."

Dr. Quark's first goal is to expand the theory of quantum batteries, build an environment conducive to quantum entanglement in the laboratory, and create the first quantum battery.

Once the practical application is successfully promoted, quantum batteries will replace the traditional batteries used in small electronic devices such as mobile phones. If the quantum battery with sufficient capacity can be produced, it can serve large equipment driven by renewable energy such as new energy vehicles.



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