Multi-mode mediated exchange coupling in cavity QED

Abstract

Microwave cavities with high quality factors enable coherent coupling of distant quantum systems. Virtual photons lead to a transverse exchange interaction between qubits, when they are non-resonant with the cavity but resonant with each other. We experimentally probe the inverse scaling of the inter-qubit coupling with the detuning from a cavity mode and its proportionality to the qubit-cavity interaction strength. We demonstrate that the enhanced coupling at higher frequencies is mediated by multiple higher-harmonic cavity modes. Moreover, in the case of resonant qubits, the symmetry properties of the system lead to an allowed two-photon transition to the doubly excited qubit state and the formation of a dark state.

9 pages, 6 figures

References in corpus (28)

• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
• Charge insensitive qubit design derived from the Cooper pair box
• Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
• Coupling Superconducting Qubits via a Cavity Bus
• NMR Techniques for Quantum Control and Computation
• Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
• Decoherence in Josephson Qubits from Dielectric Loss
• Quantum information processing with circuit quantum electrodynamics
• Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
• Demonstration of conditional gate operation using superconducting charge qubits
• Coherent control of an atomic collision in a cavity
• Preparation and Measurement of Three-Qubit Entanglement in a Superconducting Circuit
• Cavity QED with a Bose-Einstein condensate
• Climbing the Jaynes-Cummings Ladder and Observing its Sqrt(n) Nonlinearity in a Cavity QED System
• Controlling the spontaneous emission of a superconducting transmon qubit
• AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Generating Single Microwave Photons in a Circuit
• Decoherence in Josephson Qubits from Junction Resonances
• Generation of Three-Qubit Entangled States using Superconducting Phase Qubits
• Coplanar Waveguide Resonators for Circuit Quantum Electrodynamics
• Dressed Collective Qubit States and the Tavis-Cummings Model in Circuit QED
• Fast Reset and Suppressing Spontaneous Emission of a Superconducting Qubit
• State tomography of capacitively shunted phase qubits with high fidelity
• Two-Qubit State Tomography using a Joint Dispersive Read-Out
• Cavity QED with separate photon storage and qubit readout modes
• Dynamics of dispersive single qubit read-out in circuit quantum electrodynamics
• Dynamics of Coupled Qubits Interacting with an Off-Resonant Cavity
• Multi-photon spectroscopy of a hybrid quantum system

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