AAWSAP DIRD, Quantum Tomography of Negative Energy States in the Vacuum, January 2011

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.

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polarization of the signa l field S. The subsequent PBS2 separates the two orthogonally
polarized signals, which are detected at the photodiodes PDx and PDy. The charge
collected at point V (corresponding to point Pin Figure 15) provides a measure of
(l)Grd (and its higher moments). Note that the setup is arranged in such a way, that if
S happened to be a monochromatic coherent state, then it would be phase-matched to
the LO at the point x, but shifted in phase by n at the pointy.
Figure 19 displays Marecki's computer model plot of the predicted Casimir spectral
density as a function of the distance from the plates x and the frequency co. For a
comparison with quantum optics literature, he plotted the normalized difference
between the vacuum and ground state spectral density in the figure (see References [5]
and [6] for more detail). Note in the figure that for co< rec/a, the Casimir spectral
l l
density vanishes: a a,.ico,x,x) =0, while discontinuities in it appear at co = nrcc/a.
Figure 20 displays the correspond ing computer model plot by Marecki of the predicted
"suppressed" vacuum fluctuations in the ground state relative to "undisturbed" vacuum
r r r r
fluctuations (in absence of the plates) in dB, l0Log 10 [ crc,,i@,x, x)/cr vacCco,x,x)].
1mm y-Direction
Casimir plate
TEl coherent field (Local Osclllator)
lμm
x-Dlrectlon
Figure 16. Diagram of Casimir Cavity with BHD Photodiodes. (courtesy of P.
Marecki)
Side view:
-1000 -500 500 1000o y [μm]
Figure 17. Experimental Setup of BHD Photodiodes and LO Field. (courtesy of P.
Marecki) This setup is drawn on the plot of the y-component of the electric field of the
TEl mode of the Casimir cavity. The mode, serving as the LO, propagates in the z
direction perpendicular to the plot.
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