We report the design and measurement of superconducting/normal/superconducting SNS proximity dc squids in the long-junction limit, i.e., superconducting loops interrupted by two normal metal wires, which are roughly a micrometer long. Thanks to the clean interface between the metals, a large supercurrent flows through the device at low temperature. The dc squidlike geometry leads to an almost c...

The Global Geodynamics Project (GGP) is an international network of superconducting gravimeters (SG) first established in 1997 and further extended in 2003. It was decided during the last IUGG assembly in 2007 to move to a permanent network hosted by IAG and become part of GGOS. Several new locations are being planned to extend the network to about 30 stations in 2008/2009. One of the present t...

The critical temperature in a superconducting ring changes periodically with the magnetic flux threading it, giving rise to the well-known Little-Parks magnetoresistance oscillations. Periodic changes of the critical current in a superconducting quantum interference device (SQUID), consisting of two Josephson junctions in a ring, lead to a different type of magnetoresistance oscillations utiliz...

• A fractional flux quantum was trapped by a Nb bilayer disk with through-hole. This system works as phase shifter for SQUID placed on the disk. No shift occurs in single-layer case. Applying radian other than 2 ? is key issue superconducting circuits, such qubits. Magnetic useful when generating shift. However, to apply quantized magnetic shifter, fine geometrical design required. The generate...

A new quantum random-access memory device reads and writes information using a chirped electromagnetic pulse superconducting resonator, making it significantly more hardware-efficient than previous devices.

We propose a way to achieve quantum synchronization of two canonically conjugated variables. For this, we employ a superconducting device where the synchronization of Josephson and Bloch oscillations results in the quantization of transresistance similar to that in the (fractional) quantum Hall effect. An LC oscillator is a key component to achieve an exponentially small rate of synchronization...

Electrospun polymer fibers were prepared containing mixtures of different proportions of ferromagnetic and superparamagnetic nanoparticles. The magnetic properties of these fibers were then explored using a superconducting quantum interference device. Mixed superparamagnetic/ferromagnetic fibers were examined for mesoscale magnetic exchange coupling, which was not observed as theoretically pred...