One minute parity lifetime of a NbTiN Cooper-pair transistor
نویسندگان
چکیده
منابع مشابه
ac 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...
متن کاملThe Cavity-embedded-cooper Pair Transistor
Nearly eight decades after Erwin Schrödinger proposed his famous cat paradox, the boundary between classical and quantum physics is becoming accessible to experimental study in condensed matter systems, in which macroscopic and microscopic degrees of freedom interact with each other. The cavity-embedded-Cooper pair transistor (cCPT) is an ideal candidate for such a study in that it is not only ...
متن کاملObservation of quantum capacitance in the Cooper-pair transistor.
We have fabricated a Cooper-pair transistor (CPT) with parameters such that for appropriate voltage biases, it behaves essentially like a single Cooper-pair box (SCB). The effective capacitance of a SCB can be defined as the derivative of the induced charge with respect to gate voltage and has two parts, the geometric capacitance, C(geom), and the quantum capacitance C(Q). The latter is due to ...
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 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 کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Physics
سال: 2015
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys3342