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This Defense Intelligence Reference Document, dated 11 January 2011, was prepared by the Defense Intelligence Agency's Defense Warning Office under the Advanced Aerospace Weapons System Applications program. It reviews negative, or sub-vacuum, energy found in the Casimir effect and squeezed light, and describes quantum optical homodyne tomography for measuring it. It proposes balanced homodyne detector systems to map negative energy. It also suggests that arrays of such sensors could detect anomalous aerospace platforms that use engineered spacetime effects for propulsion.
From the source:Release of 2026-09-18 Incident: 1/11/11, 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 examines how negative-energy, or “sub-vacuum,” states in quantum fields might be detected and mapped. Its practical scope is limited to the laboratory-scale measurement of minute quantum effects, though it extrapolates from those effects to consider theoretical relevance to concepts such as warp drives, wormholes, or gravitational control. By reviewing previously identified laboratory examples such as the Casimir effect and squeezed light states, the report identifies the core technical challenge as mapping their spatial and temporal structures reliably. To address this, it proposes quantum optical homodyne tomography as a method to reconstruct and quantify the vacuum fluctuations associated with these states. The document acknowledges that only microscopic, transient negative-energy effects have been realized in laboratory settings. It remains unknown whether larger or longer-lived distributions of such effects can be generated or stabilized, particularly given the experimentally unresolved constraints imposed by quantum inequalities. Overall, this DIRD functions as a measurement- and diagnostics-oriented review intended to lay experimental groundwork for a far more ambitious, highly speculative negative-energy research agenda.
UNCLASSIFIED/ /FOR 8FPl@IJ!tt U.!I! l>NL I [34) Morris, M. S., Thorne, K. S., and Yurtsever, U. (1988), "Wormholes, time machines, and the weak energy conditions," Physical Review Letters, Vol. 61, pp. 1446-1449. [35) Ford, L. H. (1978), "Quantum coherence effects and the second law of thermodynamics," Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Vol. 364, pp . 227 -236. [36) Davies, P. C. W. (1982), "Can moving mirrors violate the second law of thermodynamics?," Physics Letters B, Vol. 11, p. 215 . [37) Everett, A. E. (1996), "Warp drive and causality," Physical Review D, Vol. 53, pp. 7365-7368. [38) Gerry, C. C., and Knight, P. L. (2005), Introductory Quantum Optics, Cambridge University Press, New York. [39) Mulliken, R. S. (1924), "The Band Spectrum of Boron Monoxide," Nature, Vol. 114, p. 349 . [40) Slusher, R. E., et al. (1985), "Observation of Squeezed States Generated by Four-Wave Mixing in an Optical Cavity," Physical Review Letters, Vol. 55, pp . 2409-2412. [41) Slusher, R. E., and Yurke, B. (1986), "Squeezed Light," Scientific American, Vol. 254, pp . 50-56. [42) Robinson, A. L. (1985), "Bel l Labs Generates Squeezed Light," Science, Vol. 230, pp . 927-929. [43) Robinson, A. L. (1986), "Now Four Laboratories Have Squeezed Light," Science, Vol. 233, pp . 280-281. [44) Saleh, B. E. A., and Teich, M. C. (1991), Fundamentals of Photonics, Wiley Series in Pure and Applied Optics, John Wiley & Sons, Inc., New York, pp . 414-416. [45) Caves, C. M. (1981), "Quantum-mechanical noise in an inte rferometer," Physical Review D, Vol. 23, pp. 1693- 1708. [46) Pfenning, M. J. (1998), "Quantum Inequality Restrictions on Negative Energy Densities in Curved Spacetimes," Ph.D. Dissertation, Dept. of Physics and Astronomy, Tufts Univ., Medford, MA. [47) Casimir, H.B. G., "On the Attraction Between Two Perfectly Conducting Plates," Proc. Kon . Ned. Akad. Wetensch., Vol. 51, 1948, pp . 793-796 . [48) Lamoreaux, S. K., "Demonstration of the Casimir Force in the 0.6 to 6 μm Range," Physical Review Letters, Vol. 78, 1997, pp . 5-8 . [49) Mohideen, U., "Precision Measurement of the Casimir Force from 0 .1 to 0.9 r1m," Physical Review Letters, Vol. 81, 1998, pp . 4549-4552. [50) Chen, F., et al., "Theory confronts experiment in the Casimir force measurements: Quantification of errors and precision, " Physical Review A, Vol. 69, 2004, 022117. [51) Brown, L. S., and Maclay, G. J., "Vacuum Stress between Conducting Plates : An Image Solution," Physical Review, Vol. 184, 1969, pp . 1272-1279. [52) Walker, W. R., "Negative energy fluxes and moving mirrors in curved space," Classical and Quantum Gravity, Vol. 2, 1985, pp. L37- L40 . [53) Moore, G. T., "Quantum Theory of the Electromagnetic Field in a Variable-Length One-Dimensional Cavity," Journal of Mathematical Physics, Vol. 11, 1970, pp. 2679-2691. [54) Davies, P. C. W., and Ottewill, A. C., "Detection of negative energy : 4-dimensional examples," Physical Review D, Vol. 65, 2002, 104014. [55] Neergaard-Nielsen, J. S., et al. (2006), "Generation of a Superposition of Odd Photon Number States for Quantum Information Networks," Physical Review Letters, Vol. 97, 083604. [56) Ourjoumtsev, A., et al. (2006), "Generating Optical Schrodinger Kittens for Quantum Information Processing," Science, Vol. 312, pp . 83-86 . [57) Mandel, L., and Wolf, E. ( 1995), Optical Coherence and Quantum Optics, Cambridge University Press, Cambridge, UK, Section 17 .2. (58) Leonhardt, U. (1997), Measuring the Quantum State of Light, Cambridge Studies in Modern Optics, Cambridge University Press, Cambridge, UK, pp. 98-143. [59) Schneider, K., et al. (1998), "Generation of strongly squeezed continuous-wave light at 1064 nm," Optics Express, Vol. 2, Issue 3, pp. 59-64. [60) Collin, S., Pardo, F., and Pelouard, J. - L. (2003), "Resonant-cavity-enhanced subwavelength metal semiconductor-metal photodetector," Applied Physics Letters, Vol. 83, pp. 1521-1523. UNCLASSIFIED//EOP OEEICl\k W&E OHLY 47
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 51 pages are in the text index: search them above, or from the library's search.