Generally, the laws of thermodynamics preclude the spontaneous transformation of thermal kT energy from IR to VUV levels. But this is not true for IR radiation from the surface of a VUV resonant QED cavity. Indeed, the IR frequency up-conversion to the VUV is the consquence of conserving EM energy in a QED cavity.
Cavity QED induced EM radiation follows from the most basic laws of physics - that low frequency EM radiation is suppressed in a high frequency QED cavity - the generality of the law applicable to QED cavities in both the solid and liquid state.
Typically, IR radiation from QED cavity surfaces at ambient temperature is suppressed from atoms ithin the penetration depth of the resonant VUV radiation standing across the QED cavities. But in a QED cavity the EM energy loss from the suppression of IR radiation can only be conserved by an equivalent gain at its resonant frequency, and therefore the atoms in the QED cavity surface are spontaneously excited by VUV radiation, the significance of which is that VUV radiation is produced at ambient temperature.
