42 citations · 211 across the 11 of their papers we have counts for
11 papers
Adiabatic two-qubit gates in capacitively coupled quantum dot hybrid qubits
Adam Frees, Sebastian Mehl, John King Gamble +2
The ability to tune qubits to flat points in their energy dispersions ("sweet spots") is an important tool for mitigating the effects of charge noise and dephasing in solid-state d…
Quantum computation with three-electron double quantum dots at an optimal operation point
Sebastian Mehl
The author analyzes quantum computation with the hybrid qubit (HQ) that is encoded using the three-electron configuration of a double quantum dot. All gate operations are controlle…
Simple operation sequences to couple and interchange quantum information between spin qubits of different kinds
Sebastian Mehl, David P. DiVincenzo
Efficient operation sequences to couple and interchange quantum information between quantum dot spin qubits of different kinds are derived using exchange interactions. In the qubit…
Validity of the single-particle description and charge noise resilience for multielectron quantum dots
Michiel A. Bakker, Sebastian Mehl, Tuukka Hiltunen +2
We construct an optimal set of single-particle states for few-electron quantum dots (QDs) using the method of natural orbitals (NOs). The NOs include also the effects of the Coulom…
Charge-noise tolerant exchange gates of singlet-triplet qubits in asymmetric double quantum dots
Tuukka Hiltunen, Hendrik Bluhm, Sebastian Mehl +1
In the semi-conductor double quantum dot singlet-triplet qubit architecture, the decoherence caused by the qubit's charge environment poses a serious obstacle in the way towards la…
Fault-Tolerant Quantum Computation for Singlet-Triplet Qubits with Leakage Errors
Sebastian Mehl, Hendrik Bluhm, David P. DiVincenzo
We describe and analyze leakage errors of singlet-triplet qubits. Even though leakage errors are a natural problem for spin qubits encoded using quantum dot arrays, they have obtai…
Two-Qubit Pulse Gate for the Three-Electron Double Quantum Dot Qubit
Sebastian Mehl
The three-electron configuration of gate-defined double quantum dots encodes a promising qubit for quantum information processing. I propose a two-qubit entangling gate using a pul…
Inverted Singlet-Triplet Qubit Coded on a Two-Electron Double Quantum Dot
Sebastian Mehl, David P. DiVincenzo
The spin configuration of two electrons confined at a double quantum dot (DQD) encodes the singlet-triplet qubit (STQ). We introduce the inverted STQ (ISTQ) that emerges fr…
Two-Qubit Couplings of Singlet-Triplet Qubits Mediated by One Quantum State
Sebastian Mehl, Hendrik Bluhm, David P. DiVincenzo
We describe high-fidelity entangling gates between singlet-triplet qubits (STQs) which are coupled via one quantum state (QS). The QS can be provided by a quantum dot itself or by…
Noise-Protected Gate for Six-Electron Double-Dot Qubits
Sebastian Mehl, David P. DiVincenzo
Singlet-triplet spin qubits in six-electron double quantum dots, in moderate magnetic fields, can show superior immunity to charge noise. This immunity results from the symmetry of…
Noise Analysis of Qubits Implemented in Triple Quantum Dot Systems in a Davies Master Equation Approach
Sebastian Mehl, David P. DiVincenzo
We analyze the influence of noise for qubits implemented using a triple quantum dot spin system. We give a detailed description of the physical realization and develop error models…