Decoherence as a signature of an excited state quantum phase transition
arXiv:1001.0397 · doi:10.1103/PhysRevA.78.060102
Abstract
We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal dynamics. We explore how the decoherence process is affected by the presence of quantum phase transitions in the environment. We conclude that the dynamics of the qubit changes dramatically when the environment passes through a continuous excited state quantum phase transition. If the system-environment coupling energy equals the energy at which the environment has a critical behavior, the decoherence induced on the qubit is maximal and the fidelity tends to zero with finite size scaling obeying a power-law.
References in corpus (11)
- Excited state quantum phase transitions in many-body systems
- Quantum phase transitions in the interacting boson model
- Decoherence induced by interacting quantum spin baths
- Dynamical quantum phase transitions in the dissipative Lipkin-Meshkov-Glick model and proposed realization in optical cavity QED
- Universal decoherence induced by an environmental quantum phase transition
- Coulomb analogy for nonhermitian degeneracies near quantum phase transitions
- Collective spin systems in dispersive optical cavity QED: Quantum phase transitions and entanglement
- Simple, empirical order parameter for a first order quantum phase transition in atomic nuclei
- Decoherence induced by a dynamic spin environment (I): The universal regime
- A scalar two-level boson model to study the IBM phase diagram in the Casten triangle
- On the Thermodynamic Limit of the Lipkin Model
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- Quantum Simulation of Open Quantum Systems Using a Unitary Decomposition of Operators
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- Comparative quantum and semi-classical analysis of Atom-Field Systems I: density of states and excited-state quantum phase transitions
- Excited-state quantum phase transitions in many-body systems with infinite-range interaction: Localization, dynamics, and bifurcation
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- Excited-state quantum phase transitions in systems with two degrees of freedom: III. Interacting boson systems
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- Mechanism of dynamical phase transitions: The complex-time survival amplitude
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- Digital quantum simulation of an extended Agassi model: Using machine learning to disentangle its phase-diagram
- Anomalous Thermalization in Quantum Collective Models
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- Impact of chaos on precursors of quantum criticality
- Quantum and thermal fluctuations in bosonic Josephson junctions
- Heat capacity for systems with excited-state quantum phase transitions
- Excited-State Quantum Phase Transitions in the Anharmonic Lipkin-Meshkov-Glick Model: Dynamical Aspects
- Excited state quantum phase transition and Loschmidt echo spectra in a spinor Bose-Einstein condensate
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- Experimental observation of phase transitions of a deformed Dicke model using a reconfigurable, bi-parametric electronic platform
- Chaos, thermalization and breakdown of quantum-classical correspondence in a collective many-body system
- Energy cat states induced by a parity-breaking excited-state quantum phase transition