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

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UNCLASSIFIED//FOR QFFl&IAL l:ISI!!! 8flt I
ENERGY
SQUEEZED STATE
DENSITY
0
POSITION
Figure 1. Illustration of a Squeezed State of Light. (courtesy of Lisa Burnett)
Negative (Sub-Vacuum) Energy in the Casimir Effect
The Casimir effect originates from the quantum electromagnetic vacuum ZPF. It is by
far the easiest and most well known way to generate (static) negative energy in the
lab. The Casimir effect that is familiar to most people is the force that is associated
with the quantum vacuum electromagnetic ZPF [47]. This is an attractive force that
must exist between any two neutral (uncharged), parallel, flat, conducting surfaces
(e.g., metallic plates) in a vacuum. This force has been well measured and it can be
attributed to a minute imbalance in the vacuum electromagnetic ZPE density inside the
cavity between the conducting surfaces versus the vacuum electromagnetic ZPE density
in the free-space region outside of the cavity [ 48-50]. See Figure 2 for a schematic of
the Casimir effect.
UNCLASSIFIED//FOR QFFl&IAL l:ISI! 8flt I
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