Giant enhancement of quantum decoherence by frustrated environments
arXiv:quant-ph/0512232 · doi:10.1134/S0021364006140128
Abstract
This Letter studies the decoherence in a system of two antiferromagnetically coupled spins that interact with a spin bath environment. Systems are considered that range from the rotationally invariant to highly anisotropic spin models, have different topologies and values of parameters that are fixed or are allowed to fluctuate randomly. We explore the conditions under which the two-spin system clearly shows an evolution from the initial spin-up - spin-down state towards the maximally entangled singlet state. We demonstrate that frustration and, especially, glassiness of the spin environment strongly enhances the decoherence of the two-spin system.
References in corpus (7)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Decoherence, einselection, and the quantum origins of the classical
- Theory of the spin bath
- Sub-Planck spots of Schroedinger cats and quantum decoherence
- Quantum limit of decoherence: Environment induced superselection of energy eigenstates
- An efficient scheme for numerical simulations of the spin-bath decoherence
- Decoherence by a chaotic many-spin bath
Cited by in corpus (13)
- Random State Technology
- Decoherence by a spin thermal bath: Role of the spin-spin interactions and initial state of the bath
- Decoherence by a spin thermal bath: Role of the spin-spin interactions
- Origin of the Canonical Ensemble: Thermalization with Decoherence
- Approach to equilbrium in nano-scale systems at finite temperatur
- Relaxation, thermalization and Markovian dynamics of two spins coupled to a spin bath
- Quantum Decoherence Scaling with Bath Size: Importance of Dynamics, Connectivity, and Randomness
- Evolution of a quantum spin system to its ground state: Role of entanglement and interaction symmetry
- Quantum dynamics of a small symmetry breaking measurement device
- The importance of level statistics for the decoherence of a central spin due to a spin environment
- Decoherence and pointer states in small antiferromagnets: A benchmark test
- Antiferromagnetic order without recourse to staggered fields
- Can increasing the size and flexibility of a molecule reduce decoherence and prolong charge migration?