Experimental Implementation of Logical Bell State Encoding

Abstract

Liquid phase NMR is a general purpose test-bed for developing methods of coherent control relevant to quantum information processing. Here we extend these studies to the coherent control of logical qubits and in particular to the unitary gates necessary to create entanglement between logical qubits. We report an experimental implementation of a conditional logical gate between two logical qubits that are each in decoherence free subspaces that protect the quantum information from fully correlated dephasing.

9 Pages, 5 Figures

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Cited by in corpus (12)

• Quantum Computing with NMR
• Liquid State NMR as a Test-bed for Developing Quantum Control Methods
• Direct observation of quantum criticality in Ising spin chains
• Coherent state transfer via highly mixed quantum spin chains
• Programmable quantum simulation by dynamic Hamiltonian engineering
• Iterative quantum state transfer along a chain of nuclear spin qubits
• Adiabatic quantum simulation with a segmented ion trap: Application to long-distance entanglement in quantum spin systems
• Initialization and Readout of Spin Chains for Quantum Information Transport
• Fidelity enhancement by logical qubit encoding
• Controlling NMR spin systems for quantum computation
• Error characterization in Quantum Information Processing: a protocol for analyzing spatial correlations and its experimental implementation
• Optimal encoding of two dissipative interacting qubits