190 Result(s)
within
Physics
Electronics and Microelectronics, Instrumentation
Engineering, general
**e **an
Chapter
Conference Paper
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Chapter and Conference Paper
A Hysteretic Single Cooper Pair Transistor for Single Shot Reading of a Charge-Qubit
Superconducting nano-electronic devices are appealing candidates for implementing quantum-bits1 (qubit) because they can be fabricated in parallel using lithography techniques. At the present time, the most ad...
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Chapter and Conference Paper
Single-Electron Transistors in the Regime of High Conductance
In this paper we investigate a well-known device, the single electron transistor.1 It consists of an island defined by two ultra small tunnel junctions in series and a capacitively coupled electrode, called sourc...
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Chapter and Conference Paper
Optimization of the Hot-Electron Bolometer and A Cascade Quasiparticle Amplifier for Space Astronomy
Ultra low noise bolometers are required for space - based astronomical observations. Extremely sensitive detectors are necessary for a deep full-sky survey of distant extragalactic sources in the submillimeter...
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Chapter and Conference Paper
Dynamics of Superconducting Interferometers Containing PI - Junctions
Abstract
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Chapter and Conference Paper
Nonequilibrium Quasiparticles and Electron Cooling by Normal Metal — Superconductor Tunnel Junctions
It is known that Normal metal - Insulator - Superconductor (NIS) tunnel junction in a certain range of bias voltages cools the normal metal electrode. Within a simple “semiconductor model” of a superconductor ...
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Chapter and Conference Paper
Superconducting Quantum Detector for Astronomy and X -Ray Spectroscopy
We propose the novel concept of ultra-sensitive energy-dispersive superconducting quantum detectors prospective for applications in astronomy and X-ray spectroscopy. Depending on the superconducting material a...
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Chapter and Conference Paper
Magnetic Field Dependence of Retrap** Currents in DC-Squids
The quantum computer is a novel architecture that is capable of extremely fast computation. The basic element of a quantum computer is the qubit, for which there are many candidates. Solid-state qubits have ad...
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Chapter and Conference Paper
Bayesian Quantum Measurement of a Single-Cooper-Pair Qubit
An interesting and important question is what happens to a single-Cooper-pair qubit during the measurement of its state, for example, by a single-electron transistor. If the measurement is sufficiently fast (t...
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Chapter and Conference Paper
Switching Currents and Quasi-Particle Poisoning in the Superconducting Single Electron Transistor
Superconducting small capacitance circuits provide a solid-state electronic system which is ideal for engineering of the quantum state. Quantum behavior in such circuits is embodied in the phase number uncerta...
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Chapter and Conference Paper
Solid State Analogue of a Double Slit Interferometer
In a conventional optical double slit interferometer Fig. 1a light emerges from a source at a point O’, passes through two slits A and B and forms an interference pattern at a point O. If the source provides m...
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Chapter and Conference Paper
Possibility of Single-Electron Devices and Superconducting Coherence
Among the great variety of solid-state nanostructures, those made of aluminum have found their niche. They are very reproducible in fabrication and have well predictable properties. Their parameters are easy t...
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Chapter and Conference Paper
Use of Small Tunnel Junctions Operating at T=0.3K
Small tunnel junctions, two conducting electrodes separated by a thin insulator, can be successfully used for the fabrication of small planar devices operating at the temperature typical of a helium−3 refriger...
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Chapter and Conference Paper
Setup for Experiments on the Supercurrent-Phase Relation in Bloch Transistors — Status and Possible Applications
The quantum dynamics of mesoscopic superconducting systems with small Josephson junctions is an interesting and timely issue. On the one hand, these systems are characterized by macroscopic variables behaving ...
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Chapter and Conference Paper
Superconducting Transition-Edge Sensors for Time & Energy Resolved Single-Photon Counters and for Dark Matter Searches
This paper presents a review and recent progress using transition-edge-sensors (TES) for cryogenic particle detectors. First, by directly absorbing photons in tungsten TES devices, an instrument has been made ...
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Chapter and Conference Paper
Noise in Refrigerating Tunnel Junctions and in Micorobolometers
The high sensitivity required for the astronomical observations of cosmic sources in the far-infrared (IR) or X-ray bands imposes very serious constraints on the construction of detectors. To minimize the nois...
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Chapter and Conference Paper
Superconducting Current-Phase Dependence in High-Tc Symmetrical Bicrystal Junctions
The dependence of the superconducting current Is on the phase difference φ between the order parameters of the two superconductors forming a Josephson junction (current phase relation - CPR) determines dynamic...
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Chapter and Conference Paper
Mesoscopic Josephson Junctions coupled to Weak Coherent Fields: An Example of Reciprocal Detection
Experimental and theoretical research in the physics of low capacitance Josephson junctions (JJ) has been growing more and more in the last few years. The interest towards these devices is due to their potenti...
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Chapter and Conference Paper
Lifetime of Even-Parity States of A Bloch
Several experiments have shown the existence of coherent superposition of different charge states in Single Cooper Pair Tunneling (SPT) devices [1, 2]. This makes these devices potential candidates for quantum co...
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Chapter and Conference Paper
Josephson Versus Kondo Coupling at A Quantum Dot With Superconducting Contacts
Phase coherent transport in a Quantum Dot (QD) connected to normal leads shows quite a peculiar behavior. Upon changing the gate voltage V g , the DC conductance across the ...
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Chapter and Conference Paper
Quantum Nondemolition Measurements of a Qubit
Technique is proposed for performing quantum nondemolition (QND) measurement of coherent oscillations in an individual two-state system. Such a measurement enables direct observation of intrinsic spectrum of t...
