Quantum state transfer in arrays of flux qubits

Abstract

In this work, we describe a possible experimental realization of Bose's idea to use spin chains for short distance quantum communication [S. Bose, {\it Phys. Rev. Lett.} {\bf 91} 207901]. Josephson arrays have been proposed and analyzed as transmission channels for systems of superconducting charge qubits. Here, we consider a chain of persistent current qubits, that is appropriate for state transfer with high fidelity in systems containing flux qubits. We calculate the fidelity of state transfer for this system. In general, the Hamiltonian of this system is not of XXZ-type, and we analyze the magnitude and the effect of the terms that don't conserve the z-component of the total spin.

arXiv comment10 pages, 8 figures

References in corpus (10)

• Quantum Communication Through an Unmodulated Spin Chain
• Coherent Quantum Dynamics of a Superconducting Flux Qubit
• Perfect state transfer in quantum spin networks
• A Superconducting Persistent Current Qubit
• Conclusive and arbitrarily perfect quantum state transfer using parallel spin chain channels
• The Propagation of Quantum Information Through a Spin System
• Perfect quantum state transfer with randomly coupled quantum chains
• Solid-State Quantum Communication With Josephson Arrays
• Quantum state transfer in imperfect artificial spin networks
• Quantum spin chains and Majorana states in arrays of coupled qubits

Cited by in corpus (36)

• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• Selective coupling of superconducting qubits via tunable stripline cavity
• Entanglement dynamics in chains of qubits with noise and disorder
• Optimal quantum chain communication by end gates
• Demonstration of nonstoquastic Hamiltonian in coupled superconducting flux qubits
• Enhancement of entanglement transfer in a spin chain by phase shift-control
• Optimized dynamical control of state transfer through noisy spin chains
• Quantum state transfer and time-dependent disorder in Quantum Chains
• Universal destabilization and slowing of spin transfer functions by a bath of spins
• Exploiting Quench Dynamics in Spin Chains for Distant Entanglement and Quantum Communication
• Quantum communication beyond the localization length in disordered spin chains
• Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus
• Theoretical analysis of perfect quantum state transfer with superconducting qubits
• Exploiting boundary states of imperfect spin chains for high-fidelity state transfer
• Perfect State Transfer without State Initialization and Remote Collaboration
• Use of dynamical coupling for improved quantum state transfer
• Spin State Transfer in Laterally Coupled Quantum Dot Chains with Disorders
• Probing Quantum Phase Transition in Macroscopic Qubit Array via circuit QED architecture
• Perfect State Transfer in Two and Three Dimensional Structures
• Quantum Simulation Architecture for Lattice Bosons in Arbitrary, Tunable External Gauge Fields
• Edge-locking and quantum control in highly polarized spin chains
• High fidelity transfer of an arbitrary quantum state between harmonic oscillators
• Quasi-soliton scattering in quantum spin chains
• Robust quantum state transfer between two superconducting qubits via partial measurement
• Role of interference in quantum state transfer through spin chains
• Robustness of spin-chain state-transfer schemes
• Quantum state transfer with untuneable couplings
• Fine structures in the spectrum of the open-boundary Heisenberg chain at large anisotropies
• NSQUID arrays as conveyers of quantum information
• Information transfer rates in spin quantum channels
• Emulating quantum state transfer through a spin-1 chain on a 1D lattice of superconducting qutrits
• Exact generation of quantum states by the dynamics of spin chains
• A Chain-Boson Model for the Decoherence and Relaxation of a Few Coupled SQUIDs in a Phonon Bath
• Propagation of local excitations through strongly correlated quantum chains
• Perfect Quantum State Transfer in Glauber-Fock Cavity Array
• Perfect transfer of arbitrary continuous variable states across optical waveguide lattices