Crystal Prism brings better control capabilities to quantum computing chips-scientific study-cnBeta.COM

While the future of quantum computing is highly anticipated, many issues remain to be solved, such as controlling dozens of quits at once.Now, researchers at the University of New South Wales (UNSW) have discovered a unique method.It has been reported that by adding a set of crystal prisms to the chip, it is possible to control millions of quits at once.


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Crystal Prism.  Jpg

Feedback Map (from:UNSW / Tony Melow

As shown in the image above, the crystal dielectric resonator helps to concentrate microwave energy in the magnetic field and control the quid rotation of the silicon chip (blue arrow) using the magnetic field.

Traditional computers use binary schemes with “0” and “1” to store and process information. However, in quantum systems, there are also quantum states that are simultaneously “0” or “1”.


Research Figure-1: Device layer for off-chip ESR and DR simulation

While this has a huge potential for processing efficiency, quantum computers are still difficult to deal with.

In silicon quantum processors, information is encrypted in the “up and down rotation” of electrons to represent “0” and “1”, respectively.

Typically, the corresponding functions are achieved by adjusting the magnetic field generated by the wire running with the quid.


Research Figure-2: Silicon double quantum dots with attached spiral-blocking reading

So far, the quantum computing chip used in Proof-of-Concept has proven how to control dozens of quits.

But to achieve truly powerful calculations, at least hundreds of thousands or millions of quits are needed.

The uncomfortable thing is that the electrical wiring takes up valuable space on the chip and generates more heat.


Research Figure-3: ESR results

The good news is that the University of New South Wales team has proposed a new project that will send electromagnetic fields to a large number of quits at once. To help achieve this goal is a crystal prism called a “conductive resonator”.

Located directly above the silicon chip, the device can operate and focus microwaves at wavelengths below 1 millimeter, creating a magnetic field that can be used to control the quid rotation below.

According to research author Jared Blaw, there are two major breakthroughs in this technology:

First, we do not need to invest much energy to provide a strong driving magnetic field for the qubit, so the heat will not be too great.

Second, the magnetic field of the entire chip is so uniform that it can control even one million size quits based on a single scheme.

Engineers are making significant progress in quantum computer design.Via.

In the present experiment, the research team was able to invert the position of a single quilt using this magnetic field. However, it depends on further research to create the super position of the two states simultaneously.

The research team said the solution group is finally expected to control 4 million quits at a time. Details of this research were recently published in “Scientific Advancement” (Scientific progress) In the magazine.

Original title “Single-electron vortex vibration in nanoelectronic device using global field”.

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