[PDF] Top 20 The superconducting quantum point contact
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The superconducting quantum point contact
... The critical current is discretized in units of eAo/ti, dependent on the energy gap ΔΟ of the bulk superconductor but not on the junction parameters.. To achieve this analogue of the c[r] ... See full document
19
A low energy muon spin rotation and point contact tunneling study of niobium films prepared for superconducting cavities
... weak superconducting ring of thickness 2ξ around the grain boundary, the probability, P of probing such a region with a constant steps size between junction measurement is ∝ ...quality superconducting DOS ... See full document
15
Oscillatory thermopower of a quantum point contact
... The voltage, which is measured using point contact voltage probes, is even in the current and shows strong oscillations äs the number of subbands in either one of the point contacts is v[r] ... See full document
5
Some implications of superconducting quantum interference to the application of master equations in engineering quantum technologies
... reduced density matrices for the SQUID ring and bath respectively. This approximation is generally sound in quantum optics but may not hold so well for condensed matter systems. It is not clear whether ... See full document
12
Quantum point contacts
... The fundamental reason that the local equihbrium approach of Section 4 (appropnate for weak magnetic fields) and the ideal contact approach of this section (for strong fields) yield iden[r] ... See full document
115
Gate-based single-shot readout of spins in silicon
... engineered quantum bus, have a small qubit footprint and are amenable to mass scale semiconductor fabrica- tion ...bouring quantum dot[16, 17] or an electron reservoir[18] allows qubit measurement by ... See full document
10
Andreev reflection and the Josephson effect in a quantum point contact: An analogy with phase-conjugating resonators
... We discuss thc analogy betwccn thc axial mode spcctium of an optical resonator with one or two phase-conjugating mirrors, and the quasipaiticle excitation spectium ot an NS or SNS |uncti[r] ... See full document
11
Thermo-electric properties of quantum point contacts
... We have used a current heating techniquef to ob- serve the characteristic quantum size effects in the thermo-electric properties of a quantum point contact. Our previous work on the quan[r] ... See full document
8
Quantum effects in thermal and thermo-electric transport in semiconductor nanostructures
... Using this technique, we have been able to observe the quantum size effects in the thermopower [4], Peltier coeffi- cient and thermal conductance [5] of a quantum point contact, äs well[r] ... See full document
5
Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium
... if thermal noise is negligible relative to shot noise 兲 . The optimal conditions for the observation of antibunched photons are reached for a bandwidth ⌬ ⬇ V/ 2 and a trans- mission probability ⬇ 1 / 2 through a ... See full document
6
The 0 7 Anomaly in Quantum Point Contact; Many Body or Single Electron Effect?
... Apart from usual quantization steps on the ballistic conductance of quasi-one-dimensional con- ductor, an additional plateau-like feature appears at a fraction of about 0.7 below the first con- ductance step in ... See full document
7
Evidence of double gap superconductivity in noncentrosymmetric Nb0 18Re0 82 single crystals
... the point contact and specific heat measurements are in good agreement, thus providing solid support for a double-gap su- perconducting state in high-quality single ...the superconducting pairing, ... See full document
8
Quantum computation with Majorana modes in superconducting circuits
... we point out that our results are relevant also in the case of clean wires, because they allow to simplify the experimental setup by replacing the π shaped network of ... See full document
217
Conditioned spin and charge dynamics of a single electron quantum dot
... a quantum dot ...A quantum point contact (QPC) which transmits an electron current that depends on the charge but is insensitive to the spin dy- namics on the quantum dot is used to ... See full document
9
Quantum point contact as a probe of a topological superconductor
... proximity-induced superconducting gap 1 ...a quantum point contact (QPC) in the normal region (N) at a distance d from the superconducting region (S), by discretizing the Hamiltonian on ... See full document
11
Conductance enhancement in quantum point contact semiconductor superconductor devices
... The linear-response conducting properties of QPC 2DEG-S structures have been studied by several groups. In the analytical work of Beenakker 13 a ballistic normal region with a QPC modeled by a saddle-point ... See full document
8
Waiting times of entangled electrons in normal-superconducting junctions
... real quantum state emitted at the ...entangled quantum state (Eq. (7)). To point out the specific features of entanglement, we will compare this situation to the one of two indepen- dent electrons ... See full document
9
Random-matrix theory of thermal conduction in superconducting quantum dots.
... Andreev quantum dots with multiple scattering channels can be realized in a two-dimensional electron gas with s-wave superconductors, the single-channel limit is out of reach in these systems in the absence of ... See full document
7
Hybrid atom-photon quantum gate in a superconducting microwave resonator
... We now consider the requirements for practical implemen- tation of such a gate, starting with realistic values for g and Q. The workhorse of superconducting circuit QED is the mi- crowave CPW [3] in Fig. 1(a) ... See full document
5
Quantum capacitance and charge sensing of a superconducting double dot
... In Figs 2(c) and 2(d) we are solely sensitive to the capacitance of the device, and hence see only the quantum capacitance due to the anticrossings between even parity charge states mediated by Cooper pair ... See full document
11
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