Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Bulletin of the American Physical Society

Polarization-to-spin conversion and entanglement distribution via coherent interface with semiconductor double quantum dot

C. Y. Chang, Kazuyuki Kuroyama, Marcus Larsson, Sadashige Matsuo, T. Fujita, Sascha R. Valentin, Arne Ludwig, Andreas Dirk Wieck, A. Oiwa, Seigo Tarucha

Published Mar 4, 2019• 0 citations
OpenAlex

Related papers

Double Quantum Dot as a Filter for Spin Entanglement

Xuedong Hu, S. Das Sarma

APS•Mar 1, 2004•0 citations

Entanglement distribution schemes employing coherent photon-to-spin conversion in semiconductor quantum dot circuits

Louis Gaudreau, Alex Bogan, Marek Korkusiński +3 more

Abstract Long distance entanglement distribution is an important problem for quantum information technologies to solve. Current optical schemes are known to have fundamental limitations. A coherent photon-to-spin interface built with quantum dots (QDs) in a direct bandgap semiconductor can provide a solution for efficient entanglement distribution. QD circuits offer integrated spin processing for full Bell state measurement (BSM) analysis and spin quantum memory. Crucially the photo-generated spins can be heralded by non-destructive charge detection techniques. We review current schemes to transfer a polarization-encoded state or a time-bin-encoded state of a photon to the state of a spin in a QD. The spin may be that of an electron or that of a hole. We describe adaptations of the original schemes to employ heavy holes which have a number of attractive properties including a g -factor that is tunable to zero for QDs in an appropriately oriented external magnetic field. We also introduce simple throughput scaling models to demonstrate the potential performance advantage of full BSM capability in a QD scheme, even when the quantum memory is imperfect, over optical schemes relying on linear optical elements and ensemble quantum memories.

Semiconductor Science and Technology•Jun 9, 2017•23 citations

Angular momentum transfer between a circularly polarized photon and an electron spin in double quantum dots

T. Asayama, T. Fujita, Haruki Kiyama +4 more

We propose an experimental scheme of photon‐spin quantum interface using a semiconductor double quantum dot. A polarized electron spin is excited by a circularly polarized photon. We detect the spin state applying Pauli spin blockade which is often employed to detect orientation of a single electron spin in double quantum dots.

AIP conference proceedings•Jan 1, 2011•0 citations

Polarization Entangled Photons from Semiconductor Quantum Dots

Fei Ding, Oliver G. Schmidt

Nano-optics and nanophotonics•Jan 1, 2017•0 citations

Entanglement Generation Based on Quantum Dot Spins

Aymeric Delteil, Weibo Gao, Zhe Sun +1 more

Nano-optics and nanophotonics•Jan 1, 2017•0 citations

Detection of Angular Momentum Transfer from a Single Photon to a Single Electron Spin in a Lateral Double Quantum Dot

高史 藤田

The information transfer from a photon to an electron spin in semiconductors is predicted to forward the realization of quantum computation.Gate defined lateral quantum dots is an attractive platform in this sense since the electrical single and two quantum bit (qubit) gate operations have been demonstrated only in this system.However, realization of quantum media conversion is limited up to the single photon to charge conversion due to the large disturbance of electrostatic potentials by the irradiation of light.It is still challenging to achieve high visibility of single-shot photoelectron spin measurements and the detection of angular momentum transfer from a single photon polarization to a single photoelectron spin.This work presents the detection of single photoelectron spins excited by single circularly polarized photons and confirm the optical selection rules associated with the conversion.Double heterostructure GaAs quantum wells (QWs) were prepared to selectively excite electron spins from the discrete heavy and light hole bands.The QWs are also designed to meet the requirement of the coherent transfer scheme.The out of plane electron g-factors were measured from resistively detected electron spin resonance experiments and we determined the well width implying the near zero in-plane electron g-factor.To overcome the disturbance due to light irradiation, a double quantum dot (DQD) was formed on the chosen QW.DQDs are preferable for high visibility detection of spin states using Pauli spin blockade.Additionally, under i Here, I would like to thank them all.

•Mar 24, 2014•0 citations
Abstract Long distance entanglement distribution is an important problem for quantum information technologies to solve. Current optical schemes are known to have fundamental limitations. A coherent photon-to-spin interface built with quantum dots (QDs) in a direct bandgap semiconductor can provide a solution for efficient entanglement distribution. QD circuits offer integrated spin processing for full Bell state measurement (BSM) analysis and spin quantum memory. Crucially the photo-generated spins can be heralded by non-destructive charge detection techniques. We review current schemes to transfer a polarization-encoded state or a time-bin-encoded state of a photon to the state of a spin in a QD. The spin may be that of an electron or that of a hole. We describe adaptations of the original schemes to employ heavy holes which have a number of attractive properties including a g -factor that is tunable to zero for QDs in an appropriately oriented external magnetic field. We also introduce simple throughput scaling models to demonstrate the potential performance advantage of full BSM capability in a QD scheme, even when the quantum memory is imperfect, over optical schemes relying on linear optical elements and ensemble quantum memories.
The information transfer from a photon to an electron spin in semiconductors is predicted to forward the realization of quantum computation.Gate defined lateral quantum dots is an attractive platform in this sense since the electrical single and two quantum bit (qubit) gate operations have been demonstrated only in this system.However, realization of quantum media conversion is limited up to the single photon to charge conversion due to the large disturbance of electrostatic potentials by the irradiation of light.It is still challenging to achieve high visibility of single-shot photoelectron spin measurements and the detection of angular momentum transfer from a single photon polarization to a single photoelectron spin.This work presents the detection of single photoelectron spins excited by single circularly polarized photons and confirm the optical selection rules associated with the conversion.Double heterostructure GaAs quantum wells (QWs) were prepared to selectively excite electron spins from the discrete heavy and light hole bands.The QWs are also designed to meet the requirement of the coherent transfer scheme.The out of plane electron g-factors were measured from resistively detected electron spin resonance experiments and we determined the well width implying the near zero in-plane electron g-factor.To overcome the disturbance due to light irradiation, a double quantum dot (DQD) was formed on the chosen QW.DQDs are preferable for high visibility detection of spin states using Pauli spin blockade.Additionally, under i Here, I would like to thank them all.