2020/10/26 by Kenneth Sharman, Faezeh Kimiaee Asadi, Stephen C. Wein +2
Computer Science · Physics and Astronomy · #Condensed matter physics #Open quantum system #Photon #Photon entanglement #Physics #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum dot #Quantum entanglement #Quantum mechanics #Quantum network #Quantum optics and atomic interactions #Quantum sensor #Quantum technology #Qubit #Spin (aerodynamics) #Spins #quant-ph
paper · pdf · doi:10.22331/q-2021-11-02-570
published as Quantum 5, 570 (2021) · 21 pages, 5 figures
openalex publication_date 2020/10/26 · arxiv created 2021/10/26 · arxiv updated 2021/11/03 · openalex created_date 2021/11/08 · openalex updated_date 2026/08/05
Inspired by recent developments in the control and manipulation of quantum dot nuclear spins, which allow for the transfer of an electron spin state to the surrounding nuclear-spin ensemble for storage, we propose a quantum repeater scheme that combines individual quantum dot electron spins and nuclear-spin ensembles, which serve as spin-photon interfaces and quantum memories respectively. We consider the use of low-strain quantum dots embedded in high-cooperativity optical microcavities. Quantum dot nuclear-spin ensembles allow for the long-term storage of entangled states, and heralded entanglement swapping is performed using cavity-assisted gates. We highlight the advances in quantum dot technologies required to realize our quantum repeater scheme which promises the establishment of high-fidelity entanglement over long distances with a distribution rate exceeding that of the direct transmission of photons.