Programmable directional emitter and receiver of itinerant microwave photons in a waveguide

Abstract

We theoretically demonstrate dynamically selective bidirectional emission and absorption of a single itinerant microwave photon in a waveguide. The proposed device is an artificial molecule composed of two qubits coupled to a waveguide a quarter-wavelength apart. By using simulations based on the input--output theory, we show that upon preparing an appropriate entangled state of the two qubits, a photon is emitted directionally as a result of the destructive interference occurring either at the right or left of the qubits. Moreover, we demonstrate that this artificial molecule possesses the capability of absorbing and transmitting an incoming photon on-demand, a feature essential to the creation of a fully inter-connected one-dimensional quantum network, in which quantum information can be exchanged between any two given nodes.

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Cited by in corpus (27)

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• Deterministic quantum teleportation between distant superconducting chips
• Charge-Noise Insensitive Chiral Photonic Interface for Waveguide Circuit QED
• Deterministic remote entanglement using a chiral quantum interconnect
• Avoiding decoherence with giant atoms in a two-dimensional structured environment
• Realizing quantum optics in structured environments with giant atoms
• Emergence of solitons from many-body photon bound states in quantum nonlinear media
• Unconventional Quantum Electrodynamics with Hofstadter-Ladder Waveguide
• Tunable directional photon scattering from a pair of superconducting qubits
• Engineering symmetry-selective couplings of a superconducting artificial molecule to microwave waveguides
• Simulating open quantum systems with giant atoms
• Parametrically controlled chiral interface for superconducting quantum devices
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• Chiral SQUID-metamaterial waveguide for circuit-QED
• Universal time-dependent control scheme for realizing arbitrary linear bosonic transformations
• Parametrically-controlled microwave-photonic interface for the fluxonium
• Directional emission and photon bunching from a qubit pair in waveguide
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• Enhancing Nonreciprocity through Squeezing-Induced Symmetry Breaking
• Chirality, Nonreciprocity and Symmetries for a Giant Atom
• Quasi-degenerate resonant eigenstate doublets of two quantum emitters in a closed waveguide
• Nonreciprocal routing induced by chirality in an atom-dimer waveguide-QED system