Quantum many-body theory for electron spin decoherence in nanoscale nuclear spin baths
Decoherence of electron spins in nanoscale systems is important to quantum technologies
such as quantum information processing and magnetometry. It is also an ideal model …
such as quantum information processing and magnetometry. It is also an ideal model …
Environmental noise spectroscopy with qubits subjected to dynamical decoupling
A qubit subjected to pure dephasing due to classical Gaussian noise can be turned into a
spectrometer of this noise by utilizing its readout under properly chosen dynamical …
spectrometer of this noise by utilizing its readout under properly chosen dynamical …
Ideal refocusing of an optically active spin qubit under strong hyperfine interactions
Combining highly coherent spin control with efficient light-matter coupling offers great
opportunities for quantum communication and computing. Optically active semiconductor …
opportunities for quantum communication and computing. Optically active semiconductor …
A many-body quantum register for a spin qubit
Quantum networks require quantum nodes with coherent optical interfaces and several
stationary qubits. In terms of optical properties, semiconductor quantum dots are highly …
stationary qubits. In terms of optical properties, semiconductor quantum dots are highly …
A silicon metal-oxide-semiconductor electron spin-orbit qubit
The silicon metal-oxide-semiconductor (MOS) material system is a technologically important
implementation of spin-based quantum information processing. However, the MOS interface …
implementation of spin-based quantum information processing. However, the MOS interface …
Quantum dot spin coherence governed by a strained nuclear environment
The interaction between a confined electron and the nuclei of an optically active quantum
dot provides a uniquely rich manifestation of the central spin problem. Coherent qubit control …
dot provides a uniquely rich manifestation of the central spin problem. Coherent qubit control …
Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
Semiconductor spin qubits have recently seen major advances in coherence time and
control fidelities, leading to a single-qubit performance that is on par with other leading qubit …
control fidelities, leading to a single-qubit performance that is on par with other leading qubit …
Notch filtering the nuclear environment of a spin qubit
Electron spins in gate-defined quantum dots provide a promising platform for quantum
computation,,,,,,. In particular, spin-based quantum computing in gallium arsenide takes …
computation,,,,,,. In particular, spin-based quantum computing in gallium arsenide takes …
Witnessing quantum correlations in a nuclear ensemble via an electron spin qubit
A coherent ensemble of spins interfaced with a proxy qubit is an attractive platform to create
many-body coherences and probe the regime of collective excitations. An electron spin qubit …
many-body coherences and probe the regime of collective excitations. An electron spin qubit …
Optimal purification of a spin ensemble by quantum-algorithmic feedback
Purifying a high-temperature ensemble of quantum particles toward a known state is a key
requirement to exploit quantum many-body effects. An alternative to passive cooling, which …
requirement to exploit quantum many-body effects. An alternative to passive cooling, which …