Circulation by microwave-induced vortex transport for signal isolation

Abstract

Magnetic fields break time-reversal symmetry, which is leveraged in many settings to enable the nonreciprocal behavior of light. This is the core physics of circulators and other elements used in a variety of microwave and optical settings. Commercial circulators in the microwave domain typically use ferromagnetic materials and wave interference, requiring large devices and large fields. However, quantum information devices for sensing and computation require small sizes, lower fields, and better on-chip integration. Equivalences to ferromagnetic order -- such as the XY model -- can be realized at much lower magnetic fields by using arrays of superconducting islands connected by Josephson junctions. Here we show that the quantum-coherent motion of a single vortex in such an array suffices to induce nonreciprocal behavior, enabling a small-scale, moderate-bandwidth, and low insertion loss circulator at very low magnetic fields and at microwave frequencies relevant for experiments with qubits.

arXiv comment18 pages, 11 figures. Latest version includes new figures & appendices

References in corpus (25)

• A Superconducting Persistent Current Qubit
• Quantum Phase Transitions and Vortex Dynamics in Superconducting Networks
• Engineering cryogenic setups for 100-qubit scale superconducting circuit systems
• Time-reversal symmetry breaking in circuit-QED based photon lattices
• High Kinetic Inductance Superconducting Nanowire Resonators for Circuit QED in a Magnetic Field
• Coherent spin-qubit photon coupling
• The reconfigurable Josephson circulator/directional amplifier
• Mechanical On-Chip Microwave Circulator
• Nonreciprocal microwave signal processing with a Field-Programmable Josephson Amplifier
• On-chip superconducting microwave circulator from synthetic rotation
• Widely tunable on-chip microwave circulator for superconducting quantum circuits
• Graph-based analysis of nonreciprocity in coupled-mode systems
• On-Chip Microwave Quantum Hall Circulator
• Directional amplification with a Josephson circuit
• Quarter-Flux Hofstadter Lattice in Qubit-Compatible Microwave Cavity Array
• Hall Effect Gyrators and Circulators
• Weyl Josephson Circuits
• Breaking time-reversal symmetry with a superconducting flux capacitor
• Zero-field Edge Magnetoplasmons in a Magnetic Topological Insulator
• Active protection of a superconducting qubit with an interferometric Josephson isolator
• Doubly Nonlinear Superconducting Qubit
• On-chip microwave filters for high-impedance resonators with gate-defined quantum dots
• Gyrator operation using Josephson mixers
• Design of an on-chip superconducting microwave circulator with octave bandwidth
• Circuit QED-based measurement of vortex lattice order in a Josephson junction array

Cited by in corpus (4)

• Charge-Noise Insensitive Chiral Photonic Interface for Waveguide Circuit QED
• Operating a passive on-chip superconducting circulator: device control and quasiparticle effects
• The Peripheral Vortex Biome of Confined Quantum Fluids and Its Influence on Vortex Pair Annihilation
• Chirality, Nonreciprocity and Symmetries for a Giant Atom