Quantum Advantage: A Single Qubit's Experimental Edge in Classical Data Storage

Understand

We implement an experiment on a photonic quantum processor establishing efficacy of the elementary quantum system in classical information storage.

• The advantage is established by considering a class of simple bipartite games played with the communication resource qubit and classical bit (c-bit), respectively.
• Conventional wisdom, supported by the no-go theorems of Holevo and Frenkel-Weiner, suggests that such a quantum advantage is unattainable when the sender and receiver share randomness or classical correlations.
• However, our results reveal a quantum advantage in a scenario devoid of any shared randomness.