Documents / Official release
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/ ,<fOlil OFFl&IAk W&lii OPUslf 1 S. J. Freedman and J. F. Clauser, Phys. Rev. Letters, 28, 938-942 (1972) . 2 A. Aspect, J. Dalibard, and G. Roger, Phys . Rev. Letters, 49, 91-95 (1982); A. Aspect, J. Dalibard, and G. Roger, Phys. Rev. Letters, 49, 1804 (1982). 3 Erwin Schrodinger, Proc. of Cam bridge Philosophical Society, 31, 555- 563 (1935); 32, 446-451 (1936). 4 A. Einstei n, B. Podolsky, and N. Rosen, Physical Review. 47, 777-785 (1935) . 5 Jon P. Jarrett, Nous, 18, 569 (1984) . 6 Abner Shimony, Quantum Concepts in Space and Time, R. Penrose and C. J. Isham, eds., Chapter 12, pp. 182-203, Clarendon Press, Oxford (1986). 7 C. S. Wu and I. Sha nknov, Phys. Rev ., 77, 136 ( 1950). 8 J. S. Bell, Physics, Vol. 1, 195 (1964); Rev . of Modern Physics, 38,447 (1966) . 9 W. Tittel, J. Brendel, H. Zbinden, and N. Gisin, Phys. Rev. Letters, 81, 3563-3566 ( 1998). 10 Anthony J. Leggett, Foundations of Physics 33, 1469 (2003) 11 S. Grob lacher, T. Paterek, R. Kaltenbaek, C. Brukner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, " An experimenta l test of non-loca l realism," Nature 446, 871-875 (2007) . 12 Hei nz Pagels, The Cosmic Code, Simon & Schuster, NY (1982) . 13 P. H. Eberhard, Nuovo Cimento B 38, 75 (1977) , ibid . B 46, 392 (1978); G. C. Ghirardi, A. Rimini, and T. Weber, Lett. Nuovo Cimento 2 7, 293-298 (1980); U. Yurtsever and G. Hockney, Classical and Quantum Gravity 22, 295- 312 (2005), gr-qc/0409112 . 14 K. A. Peacock and B. Hepburn, Proceedings of t he Meeting of t he Society of Exact Philosophy (1999), quant ph/9906036 . ' 5 L. Mandel and E. Wolf, Optical Coherence and Quantum Optics , Chapter 22.4, Cambridge University Press (1995) . 16 D. V. Streka lov, A. V. Sergienko, D. N. Klyshko, and Y. H. Shih, Phys. Rev. Letters, 74, 3600-3603 (199 5) . 17 B. Dopfer, Ph.D . Thesis, Univ . Innsbruck (1998); A. Zeilinger, Rev. Modern Physics 71, 5288-5297 (1999). 18 A. F. Abouraddy, M. B. Nasr, B. E. A. Sa leh, A. V. Serg ienko, and M. C. Teich . Phys. Rev . A, 63, 063803 (2001) . 19 John G. Cramer, Rev iews of Modern Physics 58, 647 (1986) ; John G. Cramer, International Journa l of Theoretica l Physics 27, 227 (1988); John G. Cramer, Foundations of Physics Letters 19 , 63-73, (2006) . 20 A. Fedrizzi, T. Herbstl, A. Poppe, T. Jenneweinl and A. Zeilinger, Optics Express 15, 15377 (2007). 21 Ludwig Zehnder, Z. Instrumentenkunde 11, 275 (1891); Ludwig Mach, Z. Jnstrumentenkunde 12, 89 (1892) . 22 J. A. Wheeler and R. P. Feynman, Rev . Mod. Physics, 21, 425-433 (1949). 23 F. Eschenerria, G. Kl inkhammer, and K. S. Th orne, Phys. Rev . D, 44, 1077-1099 (1991). 24 S. W. Hawking, Phys. Rev . D 46, 603- 611 (1992) . 25 Steven Weinberg, Physical Review Letters, 62 , 485-490 (1989). 26 Joseph Polchinski, Physica l Review Letters, 66 , 397-401 (1991). UNCLASSIFIED/ ,'FOR. OFFI&I.t.k W&liii QPlkV 26
Not linked to a story yet.
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.