Superconducting Qubits Coupled to Nanoelectromechanical Resonators: An Architecture for Solid-State Quantum Information Processing
arXiv:quant-ph/0409179 · doi:10.1103/PhysRevA.71.032311
Abstract
We describe the design for a scalable, solid-state quantum-information-processing architecture based on the integration of GHz-frequency nanomechanical resonators with Josephson tunnel junctions, which has the potential for demonstrating a variety of single- and multi-qubit operations critical to quantum computation. The computational qubits are eigenstates of large-area, current-biased Josephson junctions, manipulated and measured using strobed external circuitry. Two or more of these phase qubits are capacitively coupled to a high-quality-factor piezoelectric nanoelectromechanical disk resonator, which forms the backbone of our architecture, and which enables coherent coupling of the qubits. The integrated system is analogous to one or more few-level atoms (the Josephson junction qubits) in an electromagnetic cavity (the nanomechanical resonator). However, unlike existing approaches using atoms in electromagnetic cavities, here we can individually tune the level spacing of the ``atoms'' and control their ``electromagnetic'' interaction strength. We show theoretically that quantum states prepared in a Josephson junction can be passed to the nanomechanical resonator and stored there, and then can be passed back to the original junction or transferred to another with high fidelity. The resonator can also be used to produce maximally entangled Bell states between a pair of Josephson junctions. Many such junction-resonator complexes can assembled in a hub-and-spoke layout, resulting in a large-scale quantum circuit. Our proposed architecture combines desirable features of both solid-state and cavity quantum electrodynamics approaches, and could make quantum information processing possible in a scalable, solid-state environment.
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References in corpus (36)
- Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
- Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
- Quantum state engineering with Josephson-junction devices
- Coherent control of macroscopic quantum states in a single-Cooper-pair box
- Manipulating the Quantum State of an Electrical Circuit
- Coherent Quantum Dynamics of a Superconducting Flux Qubit
- Quantum oscillations in two coupled charge qubits
- Josephson-Junction Qubits with Controlled Couplings
- Demonstration of conditional gate operation using superconducting charge qubits
- Quantum Manipulations of Small Josephson Junctions
- Quiet SDS Josephson Junctions for Quantum Computing
- Entanglement and decoherence of a micromechanical resonator via coupling to a Cooper box
- Decoherence in Josephson Qubits from Junction Resonances
- Decoherence and 1/f noise in Josephson qubits
- Charge echo in a Cooper-pair box
- Observation of quantum oscillations between a Josephson phase qubit and a microscopic resonator using fast readout
- Superconducting Qubit Storage and Entanglement with Nanomechanical Resonators
- Quantum logic gates for coupled superconducting phase qubits
- Topologically protected quantum bits from Josephson junction arrays
- Scalable quantum computing with Josephson charge qubits
- Quantum Measurement of a Coupled Nanomechanical Resonator -- Cooper-Pair Box System
- Andreev Level Qubit
- Tunable coupling of superconducting qubits
- Non-Abelian phases, charge pumping, and quantum computation with Josephson junctions
- Possible realization of an ideal quantum computer in Josephson junction array
- Communicating Josephson Qubits
- Operation of universal gates in a DXD superconducting solid state quantum computer
- Spectroscopy of capacitively coupled Josephson-junction qubits
- Quantum information processing using Josephson junctions coupled through cavities
- Quantum algorithms for Josephson networks
- Macroscopic entanglement in Josephson nanocircuits
- Dispersive Manipulation of Paired Superconducting Qubits
- Double-Well Potentials in Current Qubits
- Nano-electronic Realizations of Quantum Bits
- DC measurements of macroscopic quantum levels in a superconducting qubit structure with a time-ordered meter
- Mechanical Lamb-shift analogue for the Cooper-pair box
Cited by in corpus (35)
- Quantum information processing with circuit quantum electrodynamics
- Quantum Communication through Spin Chain Dynamics: an Introductory Overview
- Proposal for an Optomechanical Traveling Wave Phonon-Photon Translator
- Hybrid circuit cavity quantum electrodynamics with a micromechanical resonator
- Optomechanical analog of two-color electromagnetically-induced transparency: Photon transmission through an optomechanical device with a two-level system
- Probing tiny motions of nanomechanical resonators: classical or quantum mechanical?
- Controllable Coupling between Flux Qubit and Nanomechanical Resonator by Magnetic Field
- A generalization of the quantum Rabi model: exact solution and spectral structure
- Strong squeezing and robust entanglement in cavity electromechanics
- High fidelity measurement and quantum feedback control in circuit QED
- Robust Quantum Entanglement Generation and Generation-plus-Storage Protocols with Spin Chains
- Ground state cooling of a nanomechanical resonator via a Cooper pair box qubit
- Interfacing planar superconducting qubits with high overtone bulk acoustic phonons
- Protecting entanglement in superconducting qubits
- Inverse Landau-Zener-Stuckelberg problem for qubit-resonator systems
- Macrospin Tunneling and Magnetopolaritons with Nanomechanical Interference
- Kerr nonlinearities and nonclassical states with superconducting qubits and nanomechanical resonators
- Hot electrons in low-dimensional phonon systems
- Statistics of charge transfer in a tunnel junction coupled to an oscillator
- Entangled State Synthesis for Superconducting Resonators
- Entanglement creation in circuit QED via Landau-Zener sweeps
- Soft-pulse dynamical decoupling in a cavity
- Nanomechanical Quantum Memory for Superconducting Qubits
- Structure, Time Propagation and Dissipative Terms for Resonances
- Noise spectrum of a tunnel junction coupled to a nanomechanical oscillator
- Probing the quantum behaviors of a nanomechanical resonator coupled to a double quantum dot
- Physics at the FQMT'04 conference
- Hole burning in a nanomechanical resonator coupled to a Cooper pair box
- Quantum Down Conversion and Multipartite Entanglement via a Mesoscopic SQUID Ring
- Model of multiphoton transitions in a current-biased Josephson junction
- Long-term effect of inter-mode transitions in quantum Markovian process
- Adaptive homodyne phase discrimination and qubit measurement
- Tunneling out of metastable vacuum in a system consisting of two capacitively coupled phase qubits
- Superconducting Qubits Coupled to Torsional Resonators
- The effect of noise fluctuation of a quantum tunneling device coupled to a substrate