摘要: The fluctuations of the current and voltage of the quantized unit cell equivalent circuit in loss-less
mesoscopic left-handed transmission lines (LH TL)are deduced by thermal field dynamics (TFD)
theory. And the fluctuations dependent of negative refractive index (NRI) of mesoscopic LH TL is
discussed further in thermal Fock state. The results indicate that the quantum fluctuations show
linear increasing dependent of NRI, while the frequency within the microwave frequency band and
thermal photons show destructive dependent of NRI at some temperature. When the unit cell equivalent
circuit operates at the rising temperature, the NRI is decreasing. The results demonstrates
that the lower frequency and temperature, little thermal photons are more conducive to NRI of the
mesoscopic LH TL, which is significant for the miniaturizing applications of LH TL.