Enhancing dispersive readout of superconducting qubits through dynamic control of the dispersive shift: Experiment and theory
The performance of a wide range of quantum computing algorithms and protocols depends
critically on the fidelity and speed of the employed qubit readout. Examples include gate …
critically on the fidelity and speed of the employed qubit readout. Examples include gate …
Measurement-induced transmon ionization
Despite the high measurement fidelity that can now be reached, the dispersive qubit readout
of circuit quantum electrodynamics is plagued by a loss of its quantum nondemolition …
of circuit quantum electrodynamics is plagued by a loss of its quantum nondemolition …
Benchmarking quantum logic operations relative to thresholds for fault tolerance
Contemporary methods for benchmarking noisy quantum processors typically measure
average error rates or process infidelities. However, thresholds for fault-tolerant quantum …
average error rates or process infidelities. However, thresholds for fault-tolerant quantum …
Extending the computational reach of a superconducting qutrit processor
Quantum computing with qudits is an emerging approach that exploits a larger, more
connected computational space, providing advantages for many applications, including …
connected computational space, providing advantages for many applications, including …
Model-based optimization of superconducting qubit readout
Measurement is an essential component of quantum algorithms, and for superconducting
qubits it is often the most error prone. Here, we demonstrate model-based readout …
qubits it is often the most error prone. Here, we demonstrate model-based readout …
Estimating the Energy Threshold of Phonon-mediated Superconducting Qubit Detectors Operated in an Energy-Relaxation Sensing Scheme
R Linehan, I Hernandez, DJ Temples, SQ Dang… - arxiv preprint arxiv …, 2024 - arxiv.org
In recent years, the lack of a conclusive detection of WIMP dark matter at the 10 GeV/c $^{2}
$ mass scale and above has encouraged development of low-threshold detector technology …
$ mass scale and above has encouraged development of low-threshold detector technology …
Digital homodyne and heterodyne detection for stationary bosonic modes
Homo-and heterodyne detection are fundamental techniques for measuring propagating
electromagnetic fields. However, applying these techniques to stationary fields confined in …
electromagnetic fields. However, applying these techniques to stationary fields confined in …
Heralding entangled optical photons from a microwave quantum processor
Exploiting the strengths of different quantum hardware components may increase the
capabilities of emerging quantum processors. Here we propose and analyze a quantum …
capabilities of emerging quantum processors. Here we propose and analyze a quantum …
Search for QCD axion dark matter with transmon qubits and quantum circuit
We propose a direct axion dark matter (DM) search using superconducting transmon
quantum bits (qubits) as quantum sensors. With an external magnetic field applied, axion …
quantum bits (qubits) as quantum sensors. With an external magnetic field applied, axion …
Many-excitation removal of a transmon qubit using a single-junction quantum-circuit refrigerator and a two-tone microwave drive
W Teixeira, T Mörstedt, A Viitanen, H Kivijärvi… - Scientific Reports, 2024 - nature.com
Achieving fast and precise initialization of qubits is a critical requirement for the successful
operation of quantum computers. The combination of engineered environments with all …
operation of quantum computers. The combination of engineered environments with all …