Quantum Jamming Tests the Limits of Entanglement and Causality
Researchers are exploring quantum jamming—a hypothetical way to alter entanglement without breaking causality—to probe whether deeper principles than quantum mechanics (like no-signaling) govern reality. This work challenges the foundations of device-independent quantum key distribution, which relies on monogamy of entanglement, by asking whether such jamming could undermine security or reveal new physics. Scientists including Ramanathan, Weilenmann, Popescu, Grunhaus, Eckstein, and others are collaborating to identify fundamental rules that constrain or permit these phenomena and to understand what a more complete theory of nature might look like.