Entanglement of superconducting qubits via microwave fields: classical and quantum regimes
arXiv:0803.0397 · doi:10.1103/PhysRevB.78.064503
Abstract
We study analytically and numerically the problem of two qubits with fixed coupling irradiated with quantum or classical fields. In the classical case, we derive an effective Hamiltonian, and construct composite pulse sequences leading to a CNOT gate. In the quantum case, we show that qubit-qubit-photon multiparticle entanglement and maximally entangled two-qubit state can be obtained by driving the system at very low powers (one quanta of excitation). Our results can be applied to a variety of systems of two superconducting qubits coupled to resonators.
18 pages, 12 figures
References in corpus (36)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
- Entanglement of a Pair of Quantum Bits
- Coherent control of macroscopic quantum states in a single-Cooper-pair box
- Manipulating the Quantum State of an Electrical Circuit
- Coupling Superconducting Qubits via a Cavity Bus
- Coherent Quantum Dynamics of a Superconducting Flux Qubit
- NMR Techniques for Quantum Control and Computation
- Decoherence in Josephson Qubits from Dielectric Loss
- Quantum information processing with circuit quantum electrodynamics
- Quantum oscillations in two coupled charge qubits
- Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate
- Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
- Demonstration of conditional gate operation using superconducting charge qubits
- Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
- Cavity Loss Induced Generation of Entangled Atoms
- Global entanglement in multiparticle systems
- Generating Single Microwave Photons in a Circuit
- Nonlocal properties of two-qubit gates and mixed states and optimization of quantum computations
- Observation of quantum oscillations between a Josephson phase qubit and a microscopic resonator using fast readout
- Microwave-induced coupling of superconducting qubits
- Coherent dynamics of a Josephson charge qubit
- Controllable coupling between flux qubits
- Parametric coupling for superconducting qubits
- Quantum two-level systems in Josephson junctions as naturally formed qubits
- High-fidelity gates in a Josephson qubit
- Protocol for universal gates in optimally biased superconducting qubits
- Interaction cost of non-local gates
- Interqubit coupling mediated by a high-excitation-energy quantum object
- Superconducting qubits can be coupled and addressed as trapped ions
- Interaction-free measurements with superconducting qubits
- Optimal multiqubit operations for Josephson charge qubits
- Generalized switchable coupling for superconducting qubits using double resonance
- Switchable coupling for superconducting qubits using double resonance in the presence of crosstalk
- Running-phase state in a Josephson washboard potential
- How Do Schrödinger's Cats Die?
Cited by in corpus (39)
- First-order sidebands in circuit QED using qubit frequency modulation
- Quantum switch for single-photon transport in a coupled superconducting transmission line resonator array
- Recent progress in quantum simulation using superconducting circuits
- Analytical approach to swift nonleaky entangling gates in superconducting qubits
- Generation and propagation of entanglement in driven coupled-qubit systems
- Protecting entanglement in superconducting qubits
- Multiphoton transitions in Josephson-junction qubits (Review Article)
- Engineering dissipation with resistive elements in circuit quantum electrodynamics
- Bath-induced collective phenomena on superconducting qubits: synchronization, subradiance, and entanglement generation
- Fast microwave-driven three-qubit gates for cavity-coupled superconducting qubits
- Performance of a Superconducting Quantum Battery
- Selective darkening of degenerate transitions for implementing quantum controlled-NOT gates
- Entanglement, coherence, and redistribution of quantum resources in double spontaneous downconversion processes
- Two-level systems with periodic -step driving fields: Exact dynamics and quantum state manipulations
- Enhancement of sudden death of entanglement for driven qubits
- Dissipative dynamics of a two-qubit system: Four-level lasing
- Supersolid phases of light in extended Jaynes-Cummings-Hubbard systems
- Generation of entanglement in systems of intercoupled qubits
- Dissipative state transfer and Maxwell's demon in single quantum trajectories: Excitation transfer between two noninteracting qubits via unbalanced dissipation rates
- A controllable two-qubit swapping gate using superconducting circuits
- Realism and single-quanta nonlocality
- Robust implementation of quantum gates despite always-on exchange coupling in silicon double quantum dots
- Classical-Quantum Noise Mitigation for NISQ Hardware
- Coherent quantum effects through dispersive bosonic media
- Modelling of quantum information processing with Ehrenfest guided tra jectories: a case study
- Quantum Computing Gates via Optimal Control
- Fluorescence interferometry
- Controlled-NOT logic with nonresonant Josephson phase qubits
- Active control of qubit-qubit entanglement evolution
- Entanglement of qubits via a nonlinear resonator
- Phonon-photon conversion as mechanism for cooling and coherence transfer
- Generating resonating valence bond states through Dicke subradiance
- Supercomputer simulations of transmon quantum computers
- Method for finding the critical temperature of the island in a SET structure
- Dynamical decoupling of superconducting qubits
- Effective dynamics and quantum state engineering by periodic kicks
- Efficient quantum algorithm to construct arbitrary Dicke states
- Electronic and thermal sequential transport in metallic and superconducting two-junction arrays
- Simulated Randomized Benchmarking of a Dynamically Corrected Cross-Resonance Gate