Topologically Decoherence-Protected Qubits with Trapped Ions

2007/03/31 by P. Milman, Pérola Milman, W. Maineult +10 · 2 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.other #quant-ph

paper · pdf · doi:10.1103/physrevlett.99.020503

published as Physical Review Letters 99, 2 (13/07/2007) 020503 · 4 pages

openalex publication_date 2007/07/13 · arxiv created 2007/07/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We show that trapped ions can be used to simulate a highly symmetrical Hamiltonian with eigenstates naturally protected against local sources of decoherence. This Hamiltonian involves long-range coupling between particles and provides a more efficient protection than nearest neighbor models discussed in previous works. Our results open the perspective of experimentally realizing, in controlled atomic systems, complex entangled states with decoherence times up to 9 orders of magnitude longer than isolated quantum systems.

Citations

• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Coherent Quantum Dynamics of a Superconducting Flux Qubit
• Multiparticle Entanglement of Hot Trapped Ions
• Topologically protected quantum bits using Josephson junction arrays
• Topological quantum memory
• Scalable multi-particle entanglement of trapped ions
• Fault-tolerant quantum computation by anyons
• Polynomial-Time Algorithms for Prime Factorization and Discrete Logarithms on a Quantum Computer

Cited by

• Re-examining the directional-ordering transition in the compass model with screw-periodic boundary conditions
• Spontaneous symmetry breaking in a generalized orbital compass model