Researchers at the University of Oxford have generated a new family of quantum superpositions using nonclassical components in a trapped ion system. The work demonstrates programmable control over exotic motional states and could advance quantum technologies.
The team used the motion of a single trapped ion to build superpositions from highly nonclassical quantum components rather than standard coherent states. They entangled the ion's internal qubit-like state with its motional states and performed a mid-circuit measurement to collapse the motion into the desired superposition.
Lead author Dr. Sebastian Saner said the method provided a tool to sculpt the quantum superposition into almost any shape. Measurements showed interference patterns and Wigner negativity confirming genuine quantum behavior.
Dr. Raghavendra Srinivas, who supervised the work, noted strong interest from colleagues and said the group believes it is only beginning to explore the possibilities. The results appear in Physical Review X.
The states may support more resilient quantum computing and simpler error correction while offering a platform to study the boundary between classical and quantum worlds.