Phys.org July 19, 2022 A team of researchers in the US (National Energy Research Laboratory, University of Colorado, University of Kentucky) selected a tetracenethiophene compound called TES TIPS-TT, which has a crystal structure in which all molecules share a common axis. Using time-resolved paramagnetic resonance spectroscopy they characterized the spin state of the electrons in the material. The observed spin sublevel populations are consistent with predictions from the JDE model, including preferential 5TT0 formation at z ‖ B0, with one caveat—two 5TT spin sublevels have little to no population. This may be due to crossings between the 5TT and 3TT […]
Tag Archives: Qubits generation
Hybrid qubits solve key hurdle to quantum computing
Phys.org December 28, 2018 Single-spin qubits in semiconductor quantum dots hold promise for universal quantum computation. However, initialization and readout of a qubit is orders of magnitude slower than control. An international team of researchers (Japan, France, Germany, Switzerland) combined slow initializing single-spin qubit called a Loss-DiVincenzo qubit, which has very high control fidelity and a singlet-triplet qubit, which has quick initialization and read out, but quickly becomes decoherent. For the study they combined the two types with a type of quantum gate known as a controlled phase gate, which allowed spin states to be entangled between the qubits in […]