Finite-Bias Cooper Pair Splitting
L. Hofstetter, S. Csonka, A. Baumgartner, G. Fülöp, S. d’Hollosy, J. Nygård, C. Schönenberger
DOI 10.1103/PhysRevLett.107.136801 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
In a device with a superconductor coupled to two parallel quantum dots (QDs) the electrical tunability of the QD levels can be used to exploit nonclassical current correlations due to the splitting of Cooper pairs. We experimentally investigate the effect of a finite potential difference across one quantum dot on the conductance through the other completely grounded QD in a Cooper pair splitter fabricated on an InAs nanowire. We demonstrate that the nonlocal electrical transport through the device can be tuned by electrical means and that the energy dependence of the effective density of states in the QDs is relevant for the rates of Cooper pair splitting (CPS) and elastic cotunneling. Such experimental tools are necessary to understand and develop CPS-based sources of entangled electrons in solid-state devices.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Magnetic Field Tuning and Quantum Interference in a Cooper Pair Splitter
similarity 0.93G. Fülöp et al.
Source status unknown — claims are unverified
Cooper Pair Cotunneling in Single Charge Transistors with Dissipative Electromagnetic Environment
similarity 0.93S. V. Lotkhov et al.
Source status unknown — claims are unverified
Cooper Pair Splitting by Means of Graphene Quantum Dots
similarity 0.93Z. B. Tan et al.
Source status unknown — claims are unverified
Spectroscopy of Energy-Level Splitting between Two Macroscopic Quantum States of Charge Coherently Superposed by Josephson Coupling
similarity 0.92Y. Nakamura et al.
Source status unknown — claims are unverified
Resonant Cooper Pair Tunneling through a Double-Island Qubit
similarity 0.92E. Bibow et al.
Source status unknown — claims are unverified
Spin-Split Superconductivity in Spin-Orbit Coupled Hybrid Nanowires with Ferromagnetic Barriers
similarity 0.92J. Zhao et al.
Source status unknown — claims are unverified