Effect of system level structure and spectral distribution of the environment on the decoherence rate

2007/01/31 by Jingfu Zhang, Xinhua Peng, Nageswaran Rajendran +1 · 1 citation
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.1103/physreva.75.042314

published as Phys. Rev. A 75, 042314 (2007) · Generalizations are added. Comments are welcome

arxiv created 2007/02/27 · openalex publication_date 2007/04/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Minimizing the effect of decoherence on a quantum register must be a central part of any strategy to realize scalable quantum-information processing. Apart from the strength of the coupling to the environment, the decoherence rate is determined by the system level structure and by the spectral composition of the noise trace that the environment generates. Here, we discuss a relatively simple model that allows us to study these different effects quantitatively in detail. We evaluate the effect that the perturbation has on a nuclear magnetic resonance system while it performs a Grover search algorithm.

Citations

• Coherence Stabilization of a Two-Qubit Gate by ac Fields
• Holonomic Quantum Computation in Decoherence-Free Subspaces
• Magnetic Resonance Realization of Decoherence-Free Quantum Computation
• NMR Techniques for Quantum Control and Computation
• Realization of generalized quantum searching using nuclear magnetic resonance
• Observation of Geometric Phases for Mixed States using NMR Interferometry
• Quantum-state engineering with Josephson-junction devices
• A Class of Quantum Error-Correcting Codes Saturating the Quantum Hamming Bound
• Error tolerance in an NMR implementation of Grover’s fixed-point quantum search algorithm
• Decoherence, einselection, and the quantum origins of the classical
• Dynamics of the dissipative two-state system

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