Charge-Noise Insensitive Chiral Photonic Interface for Waveguide Circuit QED

Abstract

A chiral photonic interface is a quantum system that has different probabilities for emitting photons to the left and right. An on-chip compatible chiral interface is attractive for both fundamental studies of light-matter interactions and applications to quantum information processing. We propose such a chiral interface based on superconducting circuits, which has wide bandwidth, rich tunability, and high tolerance to fabrication variations. The proposed interface consists of a core that uses Cooper-pair boxes (CPBs) to break time-reversal symmetry, and two superconducting transmons that connect the core to a waveguide in the manner reminiscent of a ``giant atom.'' The transmons form a state decoupled from the core, akin to dark states of atomic physics, rendering the whole interface insensitive to the CPB charge noise. The proposed interface can be extended to realize a broadband fully passive on-chip circulator for microwave photons.

main text (6 pages, 4 figures), supplemental material (8 pages, 5 figures, 1 table)

References in corpus (10)

• Charge insensitive qubit design derived from the Cooper pair box
• Chiral Quantum Optics
• Time-reversal symmetry breaking in circuit-QED based photon lattices
• Strongly-correlated multi-particle transport in one-dimension through a quantum impurity: an outline of exact and complete solutions
• Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom
• Noiseless nonreciprocity in a parametric active device
• Quantum Spin Dimers from Chiral Dissipation in Cold-Atom Chains
• Mechanical On-Chip Microwave Circulator
• Scattering in the ultrastrong regime: nonlinear optics with one photon
• Chiral Quantum Network with Giant Atoms

Cited by in corpus (6)

• Chiral Quantum Network with Giant Atoms
• Giant spin ensembles in waveguide magnonics
• Passive superconducting circulator on a chip
• Unconventional Quantum Electrodynamics with Hofstadter-Ladder Waveguide
• Chiral SQUID-metamaterial waveguide for circuit-QED
• All-optical control of thermal conduction in waveguide QED