The generation and detection of electron entanglement

计彦强, 金钊, 朱爱东 +2 more

We propose the schemes for implementing hyperentangled state analysis and generating four-electron high entangled states(including cluster state, |χ? state, and symmetric Dicke state) based on the charge detection of free electrons.These schemes are deterministic and rely only on charge detection and single-spin rotations. This method, which uses noninteracting electrons, is not only efficient but also saves on quantum resources.

Naresh Chandra, Rama Ghosh

Dagmar Bruβ

Yan‐Qiang Ji, Zhao Jin, Ai‐Dong Zhu +2 more

We propose the schemes for implementing hyperentangled state analysis and generating four-electron high entangled states (including cluster state, |χ〉 state, and symmetric Dicke state) based on the charge detection of free electrons. These schemes are deterministic and rely only on charge detection and single-spin rotations. This method, which uses noninteracting electrons, is not only efficient but also saves on quantum resources.

N. Chandra, R. Ghosh

Gerd Schön, Legel, S., Jürgen König

Spin entanglement between two spatially separated electrons can be generated in nonequilibrium interacting quantum dots, coherently coupled to a common lead. In this system entangled two-electron states develop which are Werner states with an imbalance between singlet and triplet probabilities. We propose a multi-terminal, multiply connected set-up for the generation and detection of this imbalance. In particular, we identify a regime in which the formation of spin entanglement leads to a cancellation of Aharonov–Bohm oscillations.