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This Defense Intelligence Reference Document from the Defense Intelligence Agency is dated 11 January 2011. It was produced in FY 2010 under the Advanced Aerospace Weapons System Applications (AAWSA) Program. It reviews negative, or sub-vacuum, energy found in squeezed light and the Casimir effect, and explains quantum optical homodyne tomography as a way to measure and map that energy in the lab. It proposes balanced homodyne detector arrays that could help detect anomalous aerospace platforms using engineered spacetime propulsion.
“Hansen”5 pages
UNCLASSIFIED/ /P9R: 9PPll!ltllt '11815 s,•tY polarization of the signal field 5. 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 5 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 rr 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 w. 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 w < rrc/a, the Casimir spectral I I density vanishes: aG,-d(rn,x,x) =0, while discontinuities in it appear at w = nnc/a. Figure 20 displays the corresponding computer model plot by Marecki of the predicted "suppressed 11 vacuum fluctuations in the ground state relative to "undisturbed" vacuum [ II II] fluctuations (in absence of the plates) in dB, 10Log 10 ac,-Jw,x,x)/a'"ac(w,x,x) . 40 Imm Casimir plate TEl Coherent field (Local Oscillator) y-Direction lμm x-Directlon Figure 16. Diagram of Casimir Cavity with BHD Photodiodes. (courtesy of P. Marecki) 1.0 _ 0.8 §_ 0.6 '; 0.4 0.2 0.0 -1000 -500 Side view: 0 y[μm] 500 1000 Figure 17. Experimental Setup of BHD Photodiodes and LO Field. (courtesy of P. Marecki) This setup is drawn on the plot of they-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. UNCLASSIFIED/ /EAR AFFI&il.«1L 1!1815 8HL I
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