Tunable coupling of a quantum phononic resonator to a transmon qubit with flip-chip architecture

Abstract

A hybrid system with tunable coupling between phonons and qubits shows great potential for advancing quantum information processing. In this work, we demonstrate strong and tunable coupling between a surface acoustic wave (SAW) resonator and a transmon qubit based on galvanic-contact flip-chip technique. The coupling strength varies from $2\pi \times$7.0 MHz to -$2\pi \times$20.6 MHz, which is extracted from different vacuum Rabi oscillation frequencies. The phonon-induced ac Stark shift of the qubit at different coupling strengths is also shown. Our approach offers a good experimental platform for exploring quantum acoustics and hybrid systems.

References in corpus (24)

• Circuit Quantum Electrodynamics
• Microwave photonics with superconducting quantum circuits
• Qubit architecture with high coherence and fast tunable coupling
• Propagating phonons coupled to an artificial atom
• Quantum transduction of optical photons from a superconducting qubit
• Quantum control of surface acoustic wave phonons
• Phonon-mediated quantum state transfer and remote qubit entanglement
• Creation and control of multi-phonon Fock states in a bulk acoustic wave resonator
• Hybrid circuit cavity quantum electrodynamics with a micromechanical resonator
• Microwave-to-optics conversion using a mechanical oscillator in its quantum groundstate
• Nonexponential decay of a giant artificial atom
• Hardware-efficient quantum random access memory with hybrid quantum acoustic systems
• Cavity quantum acoustic device in the multimode strong coupling regime
• Quantum state preparation, tomography, and entanglement of mechanical oscillators
• Surface acoustic wave resonators in the quantum regime
• Resolving Phonon Fock States in a Multimode Cavity with a Double-Slit Qubit
• Developing a platform for linear mechanical quantum computing
• Experimental demonstration of a two-dimensional phonon cavity in the quantum regime
• Electromagnetically induced acoustic transparency with a superconducting circuit
• Squeezing and multimode entanglement of surface acoustic wave phonons
• High-frequency traveling-wave phononic cavity with sub-micron wavelength
• Phononic bath engineering of a superconducting qubit
• Thin film aluminum nitride surface acoustic wave resonators for quantum acoustodynamics
• Minimally-diffracting quartz for ultra-low temperature surface acoustic wave resonators

Cited by in corpus (3)

• Stable and Efficient Charging of Superconducting Capacitively Shunted Flux Quantum Batteries
• Hybrid quantum surface acoustic wave with skyrmion qubit for quantum information processing
• Quantum Acoustics with Superconducting Qubits in the Multimode Transition-Coupling Regime