Circulation by microwave-induced vortex transport for signal isolation
arXiv:2010.04118 · doi:10.1103/PRXQuantum.2.030309
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.
18 pages, 11 figures. Latest version includes new figures & appendices
References in corpus (8)
- Time-reversal symmetry breaking in circuit-QED based photon lattices
- Mechanical On-Chip Microwave Circulator
- Nonreciprocal microwave signal processing with a Field-Programmable Josephson Amplifier
- Widely tunable on-chip microwave circulator for superconducting quantum circuits
- Graph-based analysis of nonreciprocity in coupled-mode systems
- Quarter-Flux Hofstadter Lattice in Qubit-Compatible Microwave Cavity Array
- Weyl Josephson Circuits
- On-chip microwave filters for high-impedance resonators with gate-defined quantum dots
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