Physicists demonstrated a way of storing quantum information that is less prone to errors by subjecting a quantum computer’s qubits to quasi-rhythmic laser pulses based on the Fibonacci sequence. Physicists have created a remarkable, never-before-seen phase of matter by shining a laser pulse sequ
Physicists have created a remarkable, never-before-seen phase of matter in a quantum computer.
In this quantum computer, physicists created a never-before-seen phase of matter that acts as if time has two dimensions. The phase could help protect quantum information from destruction for far longer than current methods. Credit: Quantinuum Each of those atomic ions function as what physicists dub a quantum bit, or ‘qubit.’ As opposed to conventional computers that quantify information in bits , the qubits used by quantum computers leverage the strangeness of quantum mechanics to store even more information. Just as Schrödinger’s cat is both dead and alive in its box, a qubit can be a 0, a 1, or a mashup — or ‘superposition’ — of both at the same time.
Therefore, the challenge is to make qubits more robust. To do that, physicists can use ‘symmetries,’ which are essentially properties that hold up to change. One method is adding time symmetry by blasting the atoms with rhythmic laser pulses. This approach helps, but Dumitrescu and his collaborators wondered if they could go further. So instead of just one time symmetry, they aimed to add two by using ordered but non-repeating laser pulses.
Using Quantinuum’s quantum computer, the experientialists put the theory to the test. They pulsed laser light at the computer’s qubits both periodically and using the sequence based on the Fibonacci numbers. The focus was on the qubits at either end of the 10-lineup; that’s where the researchers expected to see the new phase of matter experiencing two time symmetries at once. In the periodic test, the edge qubits stayed quantum for around 1.
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