Scalable quantum computing with Josephson charge qubits

Abstract

A goal of quantum information technology is to control the quantum state of a system, including its preparation, manipulation, and measurement. However, scalability to many qubits and controlled connectivity between any selected qubits are two of the major stumbling blocks to achieve quantum computing (QC). Here we propose an experimental method, using Josephson charge qubits, to efficiently solve these two central problems. The proposed QC architecture is scalable since any two charge qubits can be effectively coupled by an experimentally accessible inductance. More importantly, we formulate an efficient and realizable QC scheme that requires only one (instead of two or more) two-bit operation to implement conditional gates.

4 pages, 2 figures

References in corpus (8)

• Quantum state engineering with Josephson-junction devices
• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• A Superconducting Persistent Current Qubit
• Josephson-Junction Qubits with Controlled Couplings
• Universality in Quantum Computation
• Charge echo in a Cooper-pair box
• Physical Optimization of Quantum Error Correction Circuits
• Macroscopic entanglement in Josephson nanocircuits

Cited by in corpus (107)

• Microwave photonics with superconducting quantum circuits
• Superconducting Circuits and Quantum Information
• Quantum information processing with circuit quantum electrodynamics
• Quantum information processing with superconducting qubits in a microwave field
• Fast Quantum Modular Exponentiation
• Microwave-induced coupling of superconducting qubits
• Variable electrostatic transformer: controllable coupling of two charge qubits
• Controllable coupling between flux qubits
• Parametric coupling for superconducting qubits
• Controllable manipulation and entanglement of macroscopic quantum states in coupled charge qubits
• Robust optimal quantum gates for Josephson charge qubits
• Generation and control of Greenberger-Horne-Zeilinger entanglement in superconducting circuits
• Deterministic generation of large cluster states using non-deterministic collective measurements based on quantum Zeno effect
• Quantum switch for single-photon transport in a coupled superconducting transmission line resonator array
• Scalable superconducting qubit circuits using dressed states
• Quantum transducers: Integrating Transmission Lines and Nanomechanical Resonators via Charge Qubits
• Quantum bits with Josephson junctions
• Topological states and braiding statistics using quantum circuits
• Preparation of macroscopic quantum superposition states of a cavity field via coupling to a superconducting charge qubit
• Superconducting Qubits Coupled to Nanoelectromechanical Resonators: An Architecture for Solid-State Quantum Information Processing
• Entanglement dynamics in chains of qubits with noise and disorder
• Efficient one-step generation of large cluster states with solid-state circuits
• Interqubit coupling mediated by a high-excitation-energy quantum object
• Phase gate of one superconducting qubit simultaneously controlling n qubits in a cavity
• Fast two-bit operations in inductively coupled flux qubits
• Switchable resonant coupling of flux qubits
• Tomographic measurements on superconducting qubit states
• Superconducting qubits can be coupled and addressed as trapped ions
• Quantum computation with Josephson-qubits by using a current-biased information bus
• Correlation-induced suppression of decoherence in capacitively coupled Cooper-pair boxes
• Fully-connected network of superconducting qubits in a cavity
• Josephson junction qubit network with current-controlled interaction
• Long-range coupling and scalable architecture for superconducting flux qubits
• Macroscopic Einstein-Podolsky-Rosen pairs in superconducting circuits
• Implementation of pairwise longitudinal coupling in a three-qubit superconducting circuit
• Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus
• Optimal multiqubit operations for Josephson charge qubits
• Amplitude spectroscopy of two coupled qubits
• Protecting entanglement in superconducting qubits
• Clauser-Horne inequality for electron counting statistics in multiterminal mesoscopic conductors
• Perfect State Transfer without State Initialization and Remote Collaboration
• Testing Bell's inequality in constantly coupled Josephson circuits by effective single-qubit operations
• Optimal tuning of solid-state quantum gates: A universal two-qubit gate
• Generalized switchable coupling for superconducting qubits using double resonance
• Entangling two superconducting LC coherent modes via a superconducting flux qubit
• Quantum electromechanics: Quantum tunneling near resonance and qubits from buckling nanobars
• Quantum Computing in the Presence of Detected Spontaneous Emission
• Decoherence times of universal two-qubit gates in the presence of broad-band noise
• Fast entanglement of two charge-phase qubits through nonadiabatic coupling to a large junction
• Generation of quantum logic operations from physical Hamiltonians
• Superconducting qubit network with controllable nearest neighbor coupling
• Spectroscopy of superconducting charge qubits coupled by a Josephson inductance
• Tunable coupling of qubits: nonadiabatic corrections
• Quantum coherence in a compass chain under an alternating magnetic field
• On the generation of multipartite entangled states in Josephson architectures
• Geometric phase gate for entangling two Bose-Einstein condensates
• Dispersive Manipulation of Paired Superconducting Qubits
• Switchable coupling for superconducting qubits using double resonance in the presence of crosstalk
• Quantum tomography for solid state qubits
• Rapid state purification protocols for a Cooper pair box
• Variable-frequency-controlled coupling in charge qubit circuits: Effects of microwave field on qubit-state readout
• Photo-induced superconductivity in semiconductors
• Implementing Shor's algorithm on Josephson Charge Qubits
• Coupling Josephson qubits via a current-biased information bus
• Switchable coupling between charge and flux qubits
• Tuning Superinductors by Quantum Coherence Effects for Enhancing Quantum Computing
• Robust stationary entanglement of two coupled qubits in independent environments
• Nanomechanical Quantum Memory for Superconducting Qubits
• Enhanced-Fidelity Ultrafast Geometric Quantum Computation Using Strong Classical Drives
• Engineering Double-Well Potentials with Variable-Width Annular Josephson Tunnel Junctions
• Quantum phase measurement and Gauss sum factorization of large integers in a superconducting circuit
• Robust creation of entangled states of two coupled flux qubits via dynamic control of the transition frequencies
• Synthesis of maximally entangled mixed states and disentanglement in coupled Josephson charge qubits
• On the Harmonic approximation for large Josephson junction coupling charge qubits
• Hamiltonian for coupled flux qubits
• Multi-mode superconducting circuits for realizing strongly coupled multi-qubit processor units
• Quantum computation in decoherence-free subspace with superconducting devices
• Behavior of two-level quantum system driven by non-classical inputs
• Direct measurement of the quantum state of the electromagnetic field in a superconducting transmission line
• Berry phase in superconducting charge qubits interacting with a cavity field
• Non-Markovian entanglement dynamics in coupled superconducting qubit systems
• Josephson Vortex Qubit based on a Confocal Annular Josephson Junction
• Probing internal bath dynamics by a Rabi oscillator-based detector
• Generation of cluster states with Josephson charge qubits
• Broadband noise decoherence in solid-state complex architectures
• Precise positioning of an ion in an integrated Paul trap-cavity system using radiofrequency signals
• Generation of 3-Dimensional graph state with Josephson charge qubits
• Implementation of standard quantum error correction codes for solid-state qubits
• Decoherence of Josephson charge qubit
• Spectroscopy of a Cooper-Pair box in the Autler-Townes configuration
• Quantum pathology of static internal imperfections in flawed quantum computers
• Quantum logic operations and creation of entanglement in a scalable superconducting quantum computer with long-range constant interaction between qubits
• Kraus decomposition for chaotic environments
• Kraus decomposition for chaotic environments including time-dependent subsystem Hamiltonians
• Manifold algorithmic errors in quantum computers with static internal imperfections
• Implementation of Grover search algorithm with Josephson charge qubits
• An Optimal Tunable Josephson Element for Quantum Computing
• Projective Measurement Scheme for Solid-State Qubits
• Quantum deficits and correlations of two superconducting charge qubits
• Transient spectrum of a single-Cooper-pair box with binomial states
• Quantum Simulation of Pairing Hamiltonians with Nearest-Neighbor Interacting Qubits
• Confocal Annular Josephson Tunnel Junctions with Large Eccentricity
• Quantum manipulation and simulation using Josephson junction arrays
• Stability of longitudinal coupling for Josephson charge qubits
• Characterization of a quantum bus between two driven qubits
• Quantum entanglement of two flux qubits induced by an auxiliary SQUID
• Magnetically modulated superconductor-graphene-superconductor (SGS) Josephson junctions and their tunability