Information Technology Reference
Measurement results by Steinberg and co-workers have shown that the photons seemed to
have traveled at 1.7 times the speed of light. Recent optical experiments at Princeton NEC
have also verified that superluminal pulse propagation can occur in transparent media [Wang
et al.,2000]. These results indicate that the process of tunneling in quantum physics is
superluminal as claimed by E.Recami, which may be applied for realization of the high
performance computer system.
S IGNAL P ROCESSING BY THE T UNNELING P HOTON
Recently it has been discovered by the research team at the University of Maryland that a
signal processing devise based on single photon tunneling can be realized [Smolyaninov et
al.,2004]. They conducted the experiment for the transmission of light through nanometer-
scale pinholes in a gold film covered by a nonlinear dielectric, which revealed that
transmittance of a nanopore or nanopore array at one wavelength could be controlled by
illumination with a second, different, wavelength. This opens the door to optical signal
processing devises, such as all-optical switches realized on a microscopic scale which can
manipulate single electrons, atoms or photons. If the atoms can be localized to distances small
compared to the radiation wavelength, they can be coherently coupled by photons and an
entangling quantum logic gate can be realized.
By applying this technology, the computer gate consisting of a large number of small,
interconnected electromagnetic ion traps created for both memory and logical processing by
manipulating atoms with the tunneling photon may be realized as shown in Figure 2.
Figure 2. Optical lattice (A) and Quantum logic performed in a three-dimentional optical lattice (B).