4.5 Article

Superconducting Resonators with Voltage-Controlled Frequency and Nonlinearity

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Hexagonal boron nitride as a low-loss dielectric for superconducting quantum circuits and qubits

Joel I-J Wang et al.

Summary: The dielectric loss of hexagonal boron nitride (hBN) thin films in the microwave regime was studied by measuring the quality factor of parallel-plate capacitors (PPCs) made of NbSe2-hBN-NbSe2 heterostructures integrated into superconducting circuits. The research findings showed that hBN can be a promising dielectric material for building high-coherence quantum circuits with substantially reduced footprint and reduced qubit cross-talk. The integration of hBN and NbSe2 parallel-plate capacitors with aluminium Josephson junctions can realize transmon qubits with coherence times reaching 25 µs.

NATURE MATERIALS (2022)

Article Physics, Multidisciplinary

Detecting Induced p ± ip Pairing at the Al-InAs Interface with a Quantum Microwave Circuit

D. Phan et al.

Summary: Superconductor-semiconductor hybrid devices are essential for quantum information processing. This study investigates the breakdown of superconductivity in a two-dimensional Al-InAs hybrid system under an applied magnetic field, and accurately analyzes the contribution of different components in the system.

PHYSICAL REVIEW LETTERS (2022)

Article Physics, Applied

High kinetic inductance NbTiN superconducting transmission line resonators in the very thin film limit

Terence M. Bretz-Sullivan et al.

Summary: This study examines the DC and RF response of superconducting transmission line resonators made of very thin NbTiN films. The resonant frequencies of these resonators show a significant nonlinear response to RF input power, making them suitable for high kinetic inductance parametric amplifiers.

APPLIED PHYSICS LETTERS (2022)

Article Physics, Applied

Controlling Fermi level pinning in near-surface InAs quantum wells

William M. Strickland et al.

Summary: The surface morphology of near-surface InAs quantum wells is closely connected to low-temperature transport, where electron mobility is highly sensitive to the growth temperature of the underlying graded buffer layer. By introducing an In0.81Al0.19As capping layer, the Fermi level in the InAs layer can be tuned.

APPLIED PHYSICS LETTERS (2022)

Article Physics, Applied

Gate-Tunable Kinetic Inductance in Proximitized Nanowires

Lukas Johannes Splitthoff et al.

Summary: We report the detection of gate-tunable kinetic inductance in a hybrid InAs/Al nanowire. By embedding the nanowire into a quarter-wave coplanar waveguide resonator and measuring the resonance frequency of the circuit, we found that the resonance frequency can be changed by controlling the gate voltage that affects the electron density and inductance of the nanowire. Using Mattis-Bardeen theory, we extracted the gate dependence of the nanowire's normal-state conductivity and its superconducting gap.

PHYSICAL REVIEW APPLIED (2022)

Article Physics, Applied

Gate-Tunable Transmon Using Selective-Area-Grown Superconductor-Semiconductor Hybrid Structures on Silicon

Albert Hertel et al.

Summary: We present a gate-voltage-tunable transmon qubit (gatemon) based on planar InAs nanowires that grow selectively on a high-resistivity silicon substrate using III-V buffer layers. Low-loss superconducting resonators with high internal quality can be achieved using these substrates after removing the buffer layers. We demonstrate coherent control and readout of a gatemon device, and infer a high junction transparency from an analysis of the qubit anharmonicity.

PHYSICAL REVIEW APPLIED (2022)

Article Physics, Applied

Cryogenic microwave loss in epitaxial Al/GaAs/Al trilayers for superconducting circuits

C. R. H. McRae et al.

Summary: This work investigated the power-independent loss and two-level-state (TLS) loss of epitaxial, wafer-bonded, and substrate-removed Al/GaAs/Al trilayers, with the unusually high power-independent loss attributed to GaAs's intrinsic piezoelectricity.

JOURNAL OF APPLIED PHYSICS (2021)

Article Physics, Multidisciplinary

Phase Signature of Topological Transition in Josephson Junctions

Matthieu C. Dartiailh et al.

Summary: The research involves embedding two gate-tunable Al/InAs Josephson junctions in a loop geometry, where a pi jump in the junction phase is observed with an increasing in-plane magnetic field. This jump, accompanied by a minimum of the critical current, suggests a closing and reopening of the superconducting gap, showing strong anisotropy. The study's theory confirms that these signatures of a topological transition are consistent with the emergence of Majorana bound states.

PHYSICAL REVIEW LETTERS (2021)

Article Chemistry, Multidisciplinary

Local Control of Supercurrent Density in Epitaxial Planar Josephson Junctions

Bassel Heiba Elfeky et al.

Summary: This study demonstrates how local control of current distribution can be achieved in a Josephson junction using minigates, forming superconducting quantum interference devices. The enhanced edge conduction in long junctions can be eliminated by minigates to create a uniform current distribution.

NANO LETTERS (2021)

Article Chemistry, Multidisciplinary

Tuning Supercurrent in Josephson Field-Effect Transistors Using h-BN Dielectric

Fatemeh Barati et al.

Summary: Epitaxial Al-InAs heterostructures with gate-tunable JJ-FETs show promise for exploring mesoscopic and topological superconductivity. By using mechanically exfoliated h-BN as the gate dielectric, full gate-tunability of supercurrent can be achieved on Al-InAs JJ-FETs while preserving the pristine properties of Josephson junctions. Additionally, h-BN dielectric causes less change in channel density compared to Al2O3 atomic layer deposition.

NANO LETTERS (2021)

Article Materials Science, Coatings & Films

Epitaxial superconductor-semiconductor two-dimensional systems for superconducting quantum circuits

Joseph O'Connell Yuan et al.

Summary: Improvements in interface between InAs semiconductor and Al superconductor have led to the fabrication of a voltage-controlled Josephson junction field effect transistor (JJ-FET) that can be used as tunable qubits, resonators, and coupler switches. Bandgap engineering plays a crucial role in realizing a two-dimensional electron gas near the surface, while the coupling between the semiconductor layer and superconducting contacts affects qubit properties. Published research highlights the anharmonicity and coupling strengths in a quantum two level system fabricated with a JJ-FET.

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A (2021)

Review Physics, Multidisciplinary

Circuit quantum electrodynamics

Alexandre Blais et al.

Summary: Circuit quantum electrodynamics (QED) is an independent and thriving field of research that allows unprecedented detailed study and control of light-matter interaction at the quantum level. It has become essential in current approaches to gate-based digital quantum information processing with superconducting circuits, and also provides a framework for the study of hybrid quantum systems. The coherent coupling of superconducting qubits to microwave photons, dispersive qubit readout, and different regimes of light-matter interaction are key aspects of circuit QED.

REVIEWS OF MODERN PHYSICS (2021)

Article Multidisciplinary Sciences

New material platform for superconducting transmon qubits with coherence times exceeding 0.3 milliseconds

Alexander P. M. Place et al.

Summary: Superconducting transmon qubits are a leading platform for quantum computing and science, but improving qubit lifetimes and coherence times remains a challenge. Efforts to minimize contributions from surfaces have not led to significant improvements, but replacing niobium with tantalum in two-dimensional transmon qubits has shown promise in increasing lifetimes and coherence times.

NATURE COMMUNICATIONS (2021)

Article Physics, Multidisciplinary

Demonstration of a High-Fidelity CNOT Gate for Fixed-Frequency Transmons with Engineered ZZ Suppression

A. Kandala et al.

Summary: This study introduces a novel coupling architecture for transmon qubits that improves two-qubit gate performance and suppresses cross talk; by using two fixed frequency coupling elements, it achieves intrinsic suppression of static ZZ while maintaining large effective coupling rates; through cross-resonance interaction, a 180 ns single-pulse controlled NOT (CNOT) gate with a fidelity of 99.77% is demonstrated.

PHYSICAL REVIEW LETTERS (2021)

Article Multidisciplinary Sciences

Coherent manipulation of an Andreev spin qubit

M. Hays et al.

Summary: Researchers combined the advantages of semiconductor spin qubits and superconducting electrodynamic qubits to create the Andreev spin qubit, achieving coherent spin manipulation and discovering spin-flip time and spin coherence time.

SCIENCE (2021)

Article Physics, Multidisciplinary

Realization of High-Fidelity CZ and ZZ-Free iSWAP Gates with a Tunable Coupler

Youngkyu Sung et al.

Summary: High-fidelity two-qubit gates are crucial for quantum computation and simulation, but current frameworks do not fully address three-body multilevel dynamics. A new systematic approach is presented to optimize control and achieve CZ and ZZ-free iSWAP gates with high fidelity. Experimental results show interaction fidelities close to T-1 limits.

PHYSICAL REVIEW X (2021)

Article Quantum Science & Technology

Moving beyond the Transmon: Noise-Protected Superconducting Quantum Circuits

Andras Gyenis et al.

Summary: Artificial atoms realized by superconducting circuits offer unique opportunities to store and process quantum information with high fidelity. Implementations of circuits that harness intrinsic noise protection have been rapidly developed in recent years, constituting a new class of qubits.

PRX QUANTUM (2021)

Article Multidisciplinary Sciences

Resonant microwave-mediated interactions between distant electron spins

F. Borjans et al.

NATURE (2020)

Article Physics, Multidisciplinary

Phononic loss in superconducting resonators on piezoelectric substrates

Marco Scigliuzzo et al.

NEW JOURNAL OF PHYSICS (2020)

Article Physics, Multidisciplinary

Continuous monitoring of a trapped superconducting spin

M. Hays et al.

NATURE PHYSICS (2020)

Article Physics, Multidisciplinary

Parity-Protected Superconductor-Semiconductor Qubit

T. W. Larsen et al.

PHYSICAL REVIEW LETTERS (2020)

Article Physics, Multidisciplinary

Demonstrating a Continuous Set of Two-qubit Gates for Near-term Quantum Algorithms

B. Foxen et al.

PHYSICAL REVIEW LETTERS (2020)

Review Instruments & Instrumentation

Materials loss measurements using superconducting microwave resonators

C. R. H. McRae et al.

REVIEW OF SCIENTIFIC INSTRUMENTS (2020)

Article Materials Science, Multidisciplinary

Experimental measurements of effective mass in near-surface InAs quantum wells

Joseph Yuan et al.

PHYSICAL REVIEW B (2020)

Review Physics, Applied

Superconductor-semiconductor hybrid-circuit quantum electrodynamics

Guido Burkard et al.

NATURE REVIEWS PHYSICS (2020)

Article Physics, Applied

Superconducting proximity effect in epitaxial Al-InAs heterostructures

William Mayer et al.

APPLIED PHYSICS LETTERS (2019)

Article Multidisciplinary Sciences

Topological superconductivity in a phase-controlled Josephson junction

Hechen Ren et al.

NATURE (2019)

Article Multidisciplinary Sciences

Evidence of topological superconductivity in planar Josephson junctions

Antonio Fornieri et al.

NATURE (2019)

Article Physics, Multidisciplinary

Three-Qubit Randomized Benchmarking

David C. McKay et al.

PHYSICAL REVIEW LETTERS (2019)

Article Physics, Applied

High Kinetic Inductance NbN Nanowire Superinductors

David Niepce et al.

PHYSICAL REVIEW APPLIED (2019)

Article Multidisciplinary Sciences

Coherent microwave-photon-mediated coupling between a semiconductor and a superconducting qubit

P. Scarlino et al.

NATURE COMMUNICATIONS (2019)

Article Physics, Applied

Suppression of Qubit Crosstalk in a Tunable Coupling Superconducting Circuit

Pranav Mundada et al.

PHYSICAL REVIEW APPLIED (2019)

Article Physics, Condensed Matter

Superconducting Qubits: Current State of Play

Morten Kjaergaard et al.

Annual Review of Condensed Matter Physics (2019)

Article Materials Science, Multidisciplinary

Voltage-controlled superconducting quantum bus

L. Casparis et al.

PHYSICAL REVIEW B (2019)

Article Nanoscience & Nanotechnology

Superconducting gatemon qubit based on a proximitized two-dimensional electron gas

Lucas Casparis et al.

NATURE NANOTECHNOLOGY (2018)

Article Physics, Multidisciplinary

Evolution of Nanowire Transmon Qubits and Their Coherence in a Magnetic Field

F. Luthi et al.

PHYSICAL REVIEW LETTERS (2018)

Article Multidisciplinary Sciences

Hybrid rf SQUID qubit based on high kinetic inductance

J. T. Peltonen et al.

SCIENTIFIC REPORTS (2018)

Article Physics, Applied

Transport properties of near surface InAs two-dimensional heterostructures

Kaushini S. Wickramasinghe et al.

APPLIED PHYSICS LETTERS (2018)

Article Physics, Applied

Tunable Coupling Scheme for Implementing High-Fidelity Two-Qubit Gates

Fei Yan et al.

PHYSICAL REVIEW APPLIED (2018)

Article Materials Science, Multidisciplinary

Controlled-Z gate for transmon qubits coupled by semiconductor junctions

Zhenyi Qi et al.

PHYSICAL REVIEW B (2018)

Article Materials Science, Multidisciplinary

Anharmonicity of a superconducting qubit with a few-mode Josephson junction

A. Kringhoj et al.

PHYSICAL REVIEW B (2018)

Article Physics, Multidisciplinary

Zero-Energy Modes from Coalescing Andreev States in a Two-Dimensional Semiconductor-Superconductor Hybrid Platform

H. J. Suominen et al.

PHYSICAL REVIEW LETTERS (2017)

Article Physics, Multidisciplinary

Scaling of Majorana Zero-Bias Conductance Peaks

Fabrizio Nichele et al.

PHYSICAL REVIEW LETTERS (2017)

Article Physics, Applied

Tunable Superconducting Qubits with Flux-Independent Coherence

M. D. Hutchings et al.

PHYSICAL REVIEW APPLIED (2017)

Article Physics, Applied

On-chip Josephson junction microwave switch

O. Naaman et al.

APPLIED PHYSICS LETTERS (2016)

Article Physics, Multidisciplinary

Gatemon Benchmarking and Two-Qubit Operations

L. Casparis et al.

PHYSICAL REVIEW LETTERS (2016)

Article Physics, Applied

Origin and Reduction of 1/f Magnetic Flux Noise in Superconducting Devices

P. Kumar et al.

Physical Review Applied (2016)

Article Materials Science, Multidisciplinary

Coherent dynamics and decoherence in a superconducting weak link

J. T. Peltonen et al.

PHYSICAL REVIEW B (2016)

Article Physics, Multidisciplinary

Semiconductor-Nanowire-Based Superconducting Qubit

T. W. Larsen et al.

PHYSICAL REVIEW LETTERS (2015)

Article Instruments & Instrumentation

Efficient and robust analysis of complex scattering data under noise in microwave resonators

S. Probst et al.

REVIEW OF SCIENTIFIC INSTRUMENTS (2015)

Article Physics, Multidisciplinary

Qubit Architecture with High Coherence and Fast Tunable Coupling

Yu Chen et al.

PHYSICAL REVIEW LETTERS (2014)

Article Physics, Multidisciplinary

A wideband, low-noise superconducting amplifier with high dynamic range

Byeong Ho Eom et al.

NATURE PHYSICS (2012)

Review Instruments & Instrumentation

Invited Review Article: The Josephson bifurcation amplifier

R. Vijay et al.

REVIEW OF SCIENTIFIC INSTRUMENTS (2009)

Article Physics, Applied

Coplanar waveguide resonators for circuit quantum electrodynamics

M. Goeppl et al.

JOURNAL OF APPLIED PHYSICS (2008)

Article Physics, Applied

Tunable resonators for quantum circuits

A. Palacios-Laloy et al.

JOURNAL OF LOW TEMPERATURE PHYSICS (2008)

Article Physics, Multidisciplinary

1/f flux noise in Josephson phase qubits

Radoslaw C. Bialczak et al.

PHYSICAL REVIEW LETTERS (2007)

Article Optics

Charge-insensitive qubit design derived from the Cooper pair box

Jens Koch et al.

PHYSICAL REVIEW A (2007)

Article Materials Science, Multidisciplinary

Microwave bifurcation of a Josephson junction: Embedding-circuit requirements

V. E. Manucharyan et al.

PHYSICAL REVIEW B (2007)

Article Physics, Multidisciplinary

Dephasing of a superconducting flux qubit

K. Kakuyanagi et al.

PHYSICAL REVIEW LETTERS (2007)

Article Instruments & Instrumentation

Experimental study of the kinetic inductance fraction of superconducting coplanar waveguide

J Gao et al.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2006)

Article Physics, Multidisciplinary

RF-driven Josephson bifurcation amplifier for quantum measurement

I Siddiqi et al.

PHYSICAL REVIEW LETTERS (2004)

Article Multidisciplinary Sciences

Coherent quantum dynamics of a superconducting flux qubit

I Chiorescu et al.

SCIENCE (2003)