Experimental Refutation of Real-Valued Quantum Mechanics under Strict Locality Conditions
Experimental Refutation of Real-Valued Quantum Mechanics under Strict Locality Conditions
Quantum mechanics is commonly formulated in a complex, rather than real, Hilbert space. However, whether quantum theory really needs the participation of complex numbers has been debated ever since its birth. Recently, a Bell-like test in an entanglement-swapping scenario has been proposed to distinguish standard quantum mechanics from its real-valued …