A hybrid quantum circuit consisting of a superconducting flux qubit coupled to both a spin ensemble and a transmission-line resonator

Abstract

We propose an experimentally realizable hybrid quantum circuit for achieving a strong coupling between a spin ensemble and a transmission-line resonator via a superconducting flux qubit used as a data bus. The resulting coupling can be used to transfer quantum information between the spin ensemble and the resonator. In particular, in contrast to the direct coupling without a data bus, our approach requires far less spins to achieve a strong coupling between the spin ensemble and the resonator (e.g., three to four orders of magnitude less). This proposed hybrid quantum circuit could enable a long-time quantum memory when storing information in the spin ensemble, and allows the possibility to explore nonlinear effects in the ultrastrong-coupling regime.

10 pages, 4 figures

References in corpus (14)

• Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
• Superconducting Circuits and Quantum Information
• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Coherence of Nitrogen-Vacancy Electronic Spin Ensembles in Diamond
• Ultrastrong coupling regime of cavity QED with phase-biased flux qubits
• Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity
• Excited-state spectroscopy of single NV defects in diamond using optically detected magnetic resonance
• Tuning the Gap of a Superconducting Flux Qubit
• Reversible state transfer between superconducting qubits and atomic ensembles
• Molecular Dipolar Crystals as High Fidelity Quantum Memory for Hybrid Quantum Computing
• Holographic quantum computing
• Spectroscopic properties of inhomogeneously broadened spin ensembles in a cavity
• High-fidelity quantum memory using nitrogen-vacancy center ensemble for hybrid quantum computation
• Nonequilibrium phases in hybrid arrays with flux qubits and NV centers

Cited by in corpus (30)

• Hybrid quantum device with nitrogen-vacancy centers in diamond coupled to carbon nanotubes
• Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
• Coupling single molecule magnets to quantum circuits
• Quantum memory using a hybrid circuit with flux qubits and NV centers
• Enhanced tripartite interactions in spin-magnon-mechanical hybrid systems
• Fast, low-power manipulation of spin ensembles in superconducting microresonators
• Quantum microwave-optical interface with nitrogen-vacancy centers in diamond
• One-step implementation of a hybrid Fredkin gate with quantum memories and single superconducting qubit in circuit QED and its applications
• Hybrid quantum system with nitrogen-vacancy centers in diamond coupled to surface phonon polaritons in piezomagnetic superlattices
• Non-Markovian dynamics of a single-mode cavity strongly coupled to an inhomogeneously broadened spin ensemble
• Strong Spin Squeezing Induced by Weak Squeezing of Light inside a Cavity
• Preparing multiparticle entangled states of NV centers via adiabatic ground-state transitions
• Coupling spin ensembles via superconducting flux qubits
• Simulating the Lipkin-Meshkov-Glick model in a hybrid quantum system
• Spin squeezing by one-photon-two-atom excitations processes in atomic ensembles
• Longitudinal relaxation of a nitrogen-vacancy center in a spin bath by generalized cluster-correlation expansion method
• NV-Metamaterial: Tunable Quantum Hyperbolic Metamaterial Using Nitrogen-Vacancy Centers in Diamond
• Multiplex-controlled phase gate with qubits distributed in a multi-cavity system
• Amplification of the coupling strength in a hybrid quantum system
• Coupling a single NV center with a superconducting qubit via the electro-optic effect
• Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external homogeneous fields
• Generation of quantum entangled states of multiple groups of qubits distributed in multiple cavities
• Scalable quantum information transfer between nitrogen-vacancy-center ensembles
• Entangled microwaves as a resource for entangling spatially separate solid-state qubits: superconducting qubits, NV centers and magnetic molecules
• Ion-mediated interaction and controlled phase gate operation between two atomic qubits
• Cross-entangling electronic and nuclear spins of distant nitrogen-vacancy centers in noisy environments by means of quantum microwave radiation
• Transferring multiqubit entanglement onto memory qubits in a decoherence-free subspace
• Circuit QED: Generation of two-transmon-qutrit entangled states via resonant interaction
• Multi-target-qubit unconventional geometric phase gate in a multi-cavity system
• Interfacing a topological qubit with a spin qubit in a hybrid quantum system