= Chiara Marletto
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<Chiara Marletto> and <Vlatko Vedral> developed a quantum-information route to testing gravity without detecting an individual <graviton>. Their proposal uses <quantum entanglement> between two initially independent masses to witness nonclassical properties of the interaction mediating it.<Gravitationally-induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity by Chiara Marletto and Vlatko Vedral>[General mediator argument and proposed two-mass experiment]{ref}
The experimental question is stronger than measuring a gravitational phase shift alone. It requires establishing the appropriate <quantum entanglement> and controlling alternative couplings. The inference concerns the mediator under the stated assumptions, rather than uniquely selecting a complete microscopic theory of gravity.
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