Experimental demonstration of a hyper-entangled ten-qubit Schr\"odinger cat state

Understand

Coherent manipulation of an increasing number of qubits for the generation of entangled states has been an important goal and benchmark in the emerging field of quantum information science.

• The multiparticle entangled states serve as physical resources for measurement-based quantum computing and high-precision quantum metrology.
• However, their experimental preparation has proved extremely challenging.
• To date, entangled states up to six, eight atoms, or six photonic qubits have been demonstrated.