However, until now, “measuring this qubit’s spin was like trying to pick up a very, very weak light signal, like trying to squint at some dim light to determine whether the qubit was spin-up or spin-down,” Eric Rosenthal, a postdoctoral scholar at Stanford University, said.

This is where a new study from Rosenthal and his team can make a big difference. They have figured out a way to measure the spin of tin-based qubits with 87 percent accuracy, enhancing the strength of signals from these qubits to a great extent.

A tin vacancy qubit is formed when two carbon atoms in a diamond are replaced by a single tin atom. This tin center has exceptional optical properties as it emits photons in the telecom wavelength range, which is highly suitable for quantum communication applications.

In the first study of its kind at the Large Hadron Collider (LHC), the CMS collaboration has tested whether top quarks adhere to Einstein’s special theory of relativity. The research is published in the journal Physics Letters B.

Along with quantum mechanics, Einstein’s special theory of relativity serves as the basis of the Standard Model of particle physics. At its heart is a concept called Lorentz symmetry: experimental results are independent of the orientation or the speed of the experiment with which they are taken.

Special relativity has stood the test of time. However, some theories, including particular models of string theory, predict that, at very high energies, special relativity will no longer work and experimental observations will depend on the orientation of the experiment in space-time.