Probabilistic teleportation of a quantum dot spin qubit

Abstract

Electron spin s in semiconductor quantum dot s have been intensively studied for implementing quantum computation and high fidelity single and two qubit operation s have recently been achieved . Quantum teleportation is a three qubit protocol exploiting quantum entanglement and it serv es as a n essential primitive for more sophisticated quantum algorithm s Here, we demonstrate a scheme for quantum teleportation based on direct Bell measurement for a single electron spin qubit in a triple quantum dot utilizing the Pauli exclusion principle to create and detect maximally entangled state s . T he single spin polarization is teleported from the input qubit to the output qubit with a fidelity of 0.9 1 We find this fidelity is primarily limited by singlet triplet mixing which can be improved by optimizing the device parameters Our results may be extended to quantum algorithms with a larger number of se miconductor spin qubit s

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Cited by in corpus (8)

• Review of performance metrics of spin qubits in gated semiconducting nanostructures
• Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits
• Voltage-controlled Hubbard spin transistor
• Charge states, triple points and quadruple points in an InAs nanowire triple quantum dot revealed by an integrated charge sensor
• Random spin-orbit gates in the system of a Topological insulator and a Quantum dot
• Channel length dependence of the formation of quantum dots in GaN/AlGaN FETs
• Charge state estimation in quantum dots using a Bayesian approach
• Fast high-fidelity baseband reset of a latched state for quantum dot qubit readout