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This Defense Intelligence Reference Document, dated 30 March 2010, was prepared by the Defense Intelligence Agency's Defense Warning Office under its Advanced Aerospace Weapon System Applications Program. It reviews quantum entanglement, nonlocality and EPR experiments, and asks whether nonlocal quantum effects could carry observer-to-observer signals faster than light. The paper describes proposed experiments and an example of real-time Earth control of a Mars rover. It concludes that there is no compelling answer yet and that experimental tests are needed.
From the source:Release of 2026-09-18 Incident: 3/30/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD reviews quantum entanglement and nonlocality with a focus on whether those phenomena might be usable as a means of faster-than-light communication between observers, especially for real-time space operations over interplanetary distances. The report surveys the relevant quantum experiments and no-signal theorems, then examines proposed communication schemes based mainly on momentum-entangled photons, including scenarios involving superluminal and retro-causal signaling. However, it repeatedly acknowledges that the central question remains unresolved experimentally, and it gives substantial attention to the coherence-versus-entanglement tradeoff and other features of standard quantum mechanics that may prevent usable signaling even if non-local correlations are experimentally validated. Overall, the document is an exploratory analysis of whether quantum nonlocality could conceivably support a practical communications application rather than a demonstration of prospective utility.
UNCLASSIFIED/ /FOR OFFI@IAI! WSE OHi!:¥ lightlike interval, and in particular is never separated by a timelike interval that can go backwards down the t ime stream, then t imelike loops are avoided, along with the paradoxes they imply. Figure 11 shows such a system. Entangled photons in the two arms of the system are propagated through fiber-optic cables of equal length. Therefore, in the reference frame of the system, the send and receive events are simultaneous, and, aside from the latency associated with the reception of enough photons to establish the reception of a signal bit, the communication is instantaneous but does not create a timelike loop. BBO litt.age Slits Path to Le..,. - f 1km 1km IR Pass Filur I I IR Pass Filter Object Slits Pa:th to Le:ns - f VLP 351 Camera n>tt Figure 11. A Superluminal Nonlocal Communication System in Which the Communication Spans a Spacelike Interval XI. Example: Real-Time Earth Control of Mars Rover Now consider the application of a " rover" operated at interplanetary distances, with nonlocal communications used to provide rea l-time "virtual reality" control of the mobile device . Figure 12 shows a schematic of the Earth-based operation of a Mars rover. A base station on Mars wou ld contain a high-intensity source of entang led photon pairs. One stream of photons from the entangled pairs, after passing through image slits, would be transmitted from the probe to an Earth control station, allowing a nonlocal signal to be "sent" from the control station by a time sequence of choices of whether to detect the stream of arriving photons as waves or particles . The other stream of photons from the entangled pairs, after passing through object slits, would be detected locally at the Mars base station near the source and analyzed for the presence or absence of an interference pattern, thereby "receiving" the nonlocal signal as a logical "0" or "1," respectively. UNCLASSIFIED/ /fOll Offl@IAI! WSIE OHi!:¥ 20
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 32 pages are in the text index: search them above, or from the library's search.