1. A phase quantum bit comprising: a Josephson junction; a distributed element coupled to the Josephson junction, the distributed element providing a capacitive component and an inductive component of the phase quantum bit; and a control circuit coupled to the distributed element for biasing the phase quantum bit and a readout circuit coupled to the distributed element for reading the phase quantum bit, wherein the control circuit and/or the readout circuit are coupled to the distributed element at a location where the magnitude of the radio frequency (RF) current is approximately zero.