Search

We propose a universal two-qubit gate by inducing Raman transitions between singlet-triplet states in doubly-charged quantum dot molecules using intensity-modulated CW laser. By numerical optimization, a gate-fidelity above 99.99% can be achieved.

Single electron spins confined to InAs quantum dots (QDs) can serve as qubits for quantum information applications. We report QD spin-photon entanglement useful for scaling a QD spin architecture via intermediate photonic qubits.

We demonstrate entanglement between an InAs quantum dot (QD) electron spin qubit and a photon. This valuable quantum information resource can be used to mediate spin-spin entanglement between distant nodes of a QD spin network.

We teleport quantum information between two distant ytterbium ions trapped in different vacuum chambers separated by one meter. Full state tomography shows that the heralded probabilistic process employed has a fidelity of 90%.