Projects per year
Abstract
Cooper pair splitters are promising candidates for generating spin-entangled electrons. However, the splitting of Cooper pairs is a random and noisy process, which hinders further synchronized operations on the entangled electrons. To circumvent this problem, we here propose and analyze a dynamic Cooper pair splitter that produces a noiseless and regular flow of spin-entangled electrons. The Cooper pair splitter is based on a superconductor coupled to quantum dots, whose energy levels are tuned in and out of resonance to control the splitting process. We identify the optimal operating conditions for which exactly one Cooper pair is split per period of the external drive and the flow of entangled electrons becomes noiseless. To characterize the regularity of the Cooper pair splitter in the time domain, we analyze the g(2) function of the output currents and the distribution of waiting times between split Cooper pairs. Our proposal is feasible using current technology, and it paves the way for dynamic quantum information processing with spin-entangled electrons.
Original language | English |
---|---|
Article number | 237701 |
Pages (from-to) | 1-7 |
Number of pages | 7 |
Journal | Physical Review Letters |
Volume | 127 |
Issue number | 23 |
DOIs | |
Publication status | Published - 3 Dec 2021 |
MoE publication type | A1 Journal article-refereed |
Fingerprint
Dive into the research topics of 'Dynamic Cooper Pair Splitter'. Together they form a unique fingerprint.-
AoF_post doc _Brange: Lee-Yang theory of phase transitions in interacting quantum many-body systems
01/09/2020 → 31/08/2023
Project: Academy of Finland: Other research funding
-
Finnish Centre of Excellence in Quantum Technology
Flindt, C., Potanina, E., Burset Atienza, P. & Pyhäranta, T.
01/01/2018 → 31/12/2020
Project: Academy of Finland: Other research funding
-
Quantum Engineering of Charge, Heat, and Entropy Production in Nano-Devices
Flindt, C., Deger, A., Potanina, E., Norrman Brange, F., Roussel, B., Vecsei, P., Menczel, P. & Pyhäranta, T.
01/09/2017 → 31/12/2021
Project: Academy of Finland: Other research funding