Fighting Back: 10 miliKelvins Will Destroy Your Qubits

Cooling quantum computers

Read More…

+  To keep systems in a quantum state, designers have to minimize the risk of anything disrupting the fragile position. The slightest temperature increase can mean that atoms and molecules move around too much, potentially causing a quantum bit (qubit)’s voltage to spike, and flip from one quantum state to another.

“Quantum chips have to operate at very low temperatures in order to maintain the quantum information,” [Jim] Clarke said. To do this, Intel uses cryogen-free dilution refrigerator systems from specialist Blufors.


+  A debate rages about which approach is best, but one huge advantage of spin qubits, which more closely resemble existing semiconductor components, is that they are expected to have a ‘much’ higher operating temperature. Instead of 20 millikelvins, they can run at around one degree. That might not sound like a huge difference, but “believe it or not, it makes things tremendously easier.”

+  “Our goal is to get it to a rack-mounted system,” Chapman said. He pointed out that the company’s approach vastly differs from the superconducting system used by IBM (which, according to a different benchmark, claims to be the world’s most powerful quantum computer).

Source:  DCD.  Sebastian Moss,  Cooling quantum computers…

Content may have been edited for style and clarity. The “+” to the left of paragraphs or other statements indicates quoted material from “Source:” document. Boldface title is original title from “Source:” Italicized statements are directly quoted from “Source:” document. Image sources are indicated as applicable.

Share this article ...

Our Mission

At The Qubit Report, our mission is to promote knowledge and opinion of quantum computing from the casual reader to the scientifically astute.  Because Quantum is Coming.

Einstein Stroll