We introduce a Cooper pair "sluice" for the implementation of a frequency-locked current source. The device consists of two mesoscopic SQUIDs and of a single superconducting island with a gate. We demonstrate theoretically that it is possible to obtain a current as high as 0.1 nA at better than ppm accuracy via periodically modulating both the gate charge and the effective Josephson coupling. W...

Superconducting circuits present a promising platform with which to realize quantum refrigerator. Motivated by this, we fabricate and perform spectroscopy of gated Cooper-pair box, capacitively coupled two superconducting coplanar-waveguide resonators different frequencies. We experimentally demonstrate the strong coupling charge qubit resonators, ability voltage driving at gigahertz go on disc...

A technique is proposed in which an NMR spectrum or MRI is encoded and stored as spin polarization and is then moved to a different physical location to be detected. Remote detection allows the separate optimization of the encoding and detection steps, permitting the independent choice of experimental conditions and excitation and detection methodologies. In the initial experimental demonstrati...

We propose theory for a reversible quantum transducer connecting superconducting qubits and optical photons using acoustic waves in piezoelectrics. The proposed device consists of an integrated acousto-optic resonator that utilizes stimulated Brillouin scattering for phonon-photon conversion and piezoelectric effect for coupling of phonons to qubits. We evaluate the phonon-photon coupling rate ...

(SQUIDs) Joey Lambert December 8, 2008 Josephson junctions are interesting devices that provide a great deal of physics to research, both experimental and theoretical. The device was first proposed by Brian Josephson in short concise paper in 1962 [1], which predicts a resistance-less supercurrent that passes through the very thin insulating layer in between two macroscopic size superconductors...

The successful demonstration of PIAVE superconducting RFQ (SRFQ) resonator gives the opportunity of new applications, making possible the construction of compact CW accelerators, driven by small RF systems. In this paper, we outline the basic principles of SRFQ design, and discuss the possible applications to the acceleration of Exotic Ion beams and intermediate intensity proton beams for Posit...

Quantum technology is maturing to the point where quantum devices, such as quantum communication systems, quantum random number generators and quantum simulators may be built with capabilities exceeding classical computers. A quantum annealer, in particular, solves optimization problems by evolving a known initial configuration at non-zero temperature towards the ground state of a Hamiltonian e...

A new type of electrometer is described that uses a single-electron transistor (SET) and that allows large operating speeds and extremely high charge sensitivity. The SET readout was accomplished by measuring the damping of a 1.7-gigahertz resonant circuit in which the device is embedded, and in some ways is the electrostatic "dual" of the well-known radio-frequency superconducting quantum inte...

Graphene1 is the physical realization of many fundamental concepts and phenomena in solid-state physics2. However, in the list of graphene’s many remarkable properties3–6, superconductivity is notably absent. If it were possible to find a way to induce superconductivity, it could improve the performance and enable more efficient integration of a variety of promising device concepts including na...