Spin readout techniques of the nitrogen-vacancy center in diamond

DA Hopper, HJ Shulevitz, LC Bassett - Micromachines, 2018 - mdpi.com
The diamond nitrogen-vacancy (NV) center is a leading platform for quantum information
science due to its optical addressability and room-temperature spin coherence. However …

Demonstration of quantum volume 64 on a superconducting quantum computing system

P Jurcevic, A Javadi-Abhari, LS Bishop… - Quantum Science …, 2021 - iopscience.iop.org
We improve the quality of quantum circuits on superconducting quantum computing
systems, as measured by the quantum volume (QV), with a combination of dynamical …

Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier

L Chen, HX Li, Y Lu, CW Warren, CJ Križan… - npj Quantum …, 2023 - nature.com
High-fidelity and rapid readout of a qubit state is key to quantum computing and
communication, and it is a prerequisite for quantum error correction. We present a readout …

Introduction to quantum error correction and fault tolerance

SM Girvin - SciPost Physics Lecture Notes, 2023 - scipost.org
These lecture notes from the 2019 Les Houches Summer School on" Quantum Information
Machines" are intended to provide an introduction to classical and quantum error correction …

Photon-emission statistics for single nitrogen-vacancy centers

I Panadero, H Espinós, L Tsunaki, K Volkova… - Physical Review …, 2024 - APS
We model and experimentally demonstrate the full time-dependent counting statistics of
photons emitted by a single nitrogen-vacancy (NV) center in diamond under nonresonant …

High-fidelity measurement of qubits encoded in multilevel superconducting circuits

SS Elder, CS Wang, P Reinhold, CT Hann, KS Chou… - Physical Review X, 2020 - APS
Qubit measurements are central to quantum information processing. In the field of
superconducting qubits, standard readout techniques are limited not only by the signal-to …

Optimal repetitive readout of single solid-state spins determined by Fisher information

Z Zhao, S Xu, Q Shi, Y Chen, X Kong, Z Yang… - Science …, 2024 - science.org
Quantum systems, including superconducting circuits, trapped ions, quantum dots, solid-
state defects, etc., have achieved considerable advancements in readout fidelity. However …

Optimal dispersive readout of a spin qubit with a microwave resonator

B D'Anjou, G Burkard - Physical Review B, 2019 - APS
Strong coupling of semiconductor spin qubits to superconducting microwave resonators was
recently demonstrated [X. Mi, Nature 555, 599 (2018) NATUAS 0028-0836 …

Robust readout of bosonic qubits in the dispersive coupling regime

CT Hann, SS Elder, CS Wang, K Chou, RJ Schoelkopf… - Physical Review A, 2018 - APS
High-fidelity qubit measurements play a crucial role in quantum computation,
communication, and metrology. In recent experiments, it has been shown that readout …

Simultaneous transient dispersive readout of multiple spin qubits

F Ginzel, G Burkard - Physical Review B, 2023 - APS
We propose a paradigm of multiplexed dispersive qubit measurement performed while the
qubits dephase. A Laplace transformation of the time-dependent cavity response allows to …