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20052026
most citedWannier90 as a community code: new features and applications

1.9k citations

Showing 2019 · quant-phShow all

9 papers · 2 filters

quant-ph2019★ 133 cited

Low-frequency spin qubit detuning noise in highly purified Si/SiGe

Tom Struck, Arne Hollmann, Floyd Schauer +8

The manipulation fidelity of a single electron qubit gate-confined in a Si/SiGe quantum dot has recently been drastically improved by nuclear isotope purification. Here, we…

quant-ph2019★ 12 cited

Measurement of back-action from electron spins in a gate defined GaAs double quantum dot coupled to a mesoscopic nuclear spin bath

Patrick Bethke, Robert P. G. McNeil, Julian Ritzmann +4

Decoherence of a quantum system arising from its interaction with an environment is a key concept for understanding the transition between the quantum and classical world as well a…

quant-ph2019★ 17 cited

Self-Consistent Calibration of Quantum Gate Sets

Pascal Cerfontaine, René Otten, Hendrik Bluhm

The precise and automated calibration of quantum gates is a key requirement for building a reliable quantum computer. Unlike errors from decoherence, systematic errors can in princ…

quant-ph2019★ 20 cited

Optimal gauge for the multimode Rabi model in circuit QED

Marco Roth, Fabian Hassler, David P. DiVincenzo

In circuit QED, a Rabi model can be derived by truncating the Hilbert space of the anharmonic qubit coupled to a linear, reactive environment. This truncation breaks the gauge inva…

quant-ph2019★ 17 cited

Spectral Quantum Tomography

Jonas Helsen, Francesco Battistel, Barbara M. Terhal

We introduce spectral quantum tomography, a simple method to extract the eigenvalues of a noisy few-qubit gate, represented by a trace-preserving superoperator, in a SPAM-resistant…

quant-ph2019★ 38 cited

Control Electronics For Semiconductor Spin Qubits

Lotte Geck, Andre Kruth, Hendrik Bluhm +2

Future universal quantum computers solving problems of practical relevance are expected to require at least qubits, which is a massive scale-up from the present numbers of l…

quant-ph2019★ 180 cited

A fast, low-leakage, high-fidelity two-qubit gate for a programmable superconducting quantum computer

M. A. Rol, F. Battistel, F. K. Malinowski +8

A common approach to realize conditional-phase (CZ) gates in transmon qubits relies on flux control of the qubit frequency to make computational states interact with non-computatio…

quant-ph2019★ 30 cited

Five approaches to exact open-system dynamics: Complete positivity, divisibility and time-dependent observables

Viktor Reimer, Maarten Rolf Wegewijs, Konstantin Nestmann +1

To extend the classical concept of Markovianity to an open quantum system, different notions of the divisibility of its dynamics have been introduced. Here we analyze this issue by…

quant-ph2019★ 29 cited

High-fidelity gate set for exchange-coupled singlet-triplet qubits

Pascal Cerfontaine, René Otten, M. A. Wolfe +2

In order to enable semiconductor-based quantum computing with many qubits, issues like residual interqubit coupling and constraints from scalable control hardware need to be tackle…