Search for dissertations about: "superconducting detector"

Showing result 1 - 5 of 23 swedish dissertations containing the words superconducting detector.

2. 1. Engineering superconducting qubits : towards a quantum machine

   Author : Joachim Sjöstrand; Anders Karlhede; Denis Vion; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

   Abstract : A quantum computer is an information processing machine, much like an ordinary classical computer, but its function is based on quantum mechanical principles. To be able to construct such a machine would be a fantastic accomplishment---to have total control over a quantum system is a dream for both physicists and science-fiction enthusiasts. READ MORE

4. 2. Pulse and hold switching current readout of superconducting quantum circuits

   Author : Jochen Walter; David Haviland; Hans Mooij; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Josephson junction; readout; qubit; detector; frequency dependent damping; quantronium; phase-space; correlation analysis; Physics; Fysik;

   Abstract : Josephson junction qubits are promising candidates for a scalable quantum processor. Such qubits are commonly manipulated by means of sequences of rf-pulses and different methods are used to determine their quantum state. READ MORE

5. 3. NbTiN for improved superconducting detectors

   Author : Julien Zichi; Val Zwiller; Gregory Gol'tsman; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; superconducting nanowire sngle photon detector; SNSPD; niobium titanium nitride; NbTiN; reactive co-sputtering; quantum communications; quantum sensing; Fysik; Physics;

   Abstract : The physics of single photons is fascinating, by manipulating them we can observe and probe quantum effects. Doing so requires the fabrication and utilization of single photon sources, of which many types have been developed including quantum dots, trapped atoms and ions, and color centers. READ MORE

6. 4. Quantum optics in superconducting circuits : Generating, engineering and detecting microwave photons

   Author : Sankar Raman Sathyamoorthy; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; single photon source; superconducting circuits; single photon detector; cross-Kerr effect; Quantum optics; circuit QED;

   Abstract : Quantum optics in superconducting circuits, known as circuit QED, studies the interaction of photons at microwave frequencies with artificial atoms made of Josephson junctions. Although quite young, remarkable progress has been made in this field over the past decade, especially given the interest in building a quantum computer using superconducting circuits. READ MORE

7. 5. NbN and NbTiN Hot Electron Bolometer THz Mixers

   Author : Pourya Khosropanah; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; receiver noise; hot electron bolometer; superconducting detector; spiral antenna; NbTiN; submillimeter mixer; THz mixer; HEB; FTS; NbN; quasioptical receiver; heterodyne receiver; double slot antenna; twin slot antenna; Fourier Transform Spectrometer;

   Abstract : The thesis reports the development of Hot Electron Bolometer (HEB) mixers for radio astronomy heterodyne receivers in THz frequency range. Part of this work is the fabrication of HEB devices, which are based on NbN or NbTiN superconducting thin films (≤5 nm). They are integrated with wideband spiral or double-slot planar antennas. READ MORE