منابع مشابه
Finite-bias Cooper pair splitting.
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...
متن کاملWhat Is a Cooper Pair?
Superconductivity and Fermi superfluidity have been subjects of increasing interest since their discovery. It seems as if nature wisely entangled Bose-Einstein (BE) condensation with these collective phenomena which are direct macroscopic manifestations of quantum physics. Recently, the nature of Cooper pairs in the BCS-BEC crossover has regained attention due to the observation of a large frac...
متن کاملP-wave Cooper pair splitting
BACKGROUND Splitting of Cooper pairs has recently been realized experimentally for s-wave Cooper pairs. A split Cooper pair represents an entangled two-electron pair state, which has possible application in on-chip quantum computation. Likewise the spin-activity of interfaces in nanoscale tunnel junctions has been investigated theoretically and experimentally in recent years. However, the possi...
متن کاملLuminescence of a cooper pair.
This Letter theoretically discusses the photon emission spectra of a superconducting p-n junction. On the basis of the second order perturbation theory for electron-photon interaction, we show that the recombination of a Cooper pair with two p-type carriers causes enhancement of the luminescence intensity. The calculated results of photon emission spectra explain characteristic features of obse...
متن کاملac Josephson effect and resonant Cooper pair tunneling emission of a single Cooper pair transistor.
We measure the high-frequency emission of a single Cooper pair transistor (SCPT) in the regime where transport is only due to tunneling of Cooper pairs. This is achieved by coupling on chip the SCPT to a superconductor-insulator-superconductor junction and by measuring the photon assisted tunneling current of quasiparticles across the junction. This technique allows a direct detection of the ac...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2008
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.77.144522