The new high temperature superconductors have triggered enormous interest not only because of the unique physics involved but also because of their technical potentials, such as the promise for propagation of extremely short electrical pulses. Superconducting band gaps of ~20 THz are predicted assuming BCS theory for the superconductor, making lossless propagation of electrical pulses as short as 50 fs possible.

© 1989 Optical Society of America

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