Before revision: Because frequency can be measured with very high precision, this effect is used as the basis of the Josephson voltage standard, which implements the international definition of the "conventional" volt.Quantum voltage metrology at NIST, accessed 11-5-11 </ref> Josephson diode In the case that the STJ shows asymmetric Josephson tunneling, the junction can become a Josephson diode.
After revision: Because frequency can be measured with very high precision, this effect is used as the basis of the Josephson voltage standard, which implements the international definition of the "conventional" volt.Quantum voltage metrology at NIST, accessed 11-5-11 Josephson diode In the case that the STJ shows asymmetric Josephson tunneling, the junction can become a Josephson diode.