Environment-induced sudden transition in quantum discord dynamics
arXiv:1104.3885 · doi:10.1103/PhysRevLett.107.140403
Abstract
Non-classical correlations play a crucial role in the development of quantum information science. The recent discovery that non-classical correlations can be present even in separable (unentangled) states has broadened this scenario. This generalized quantum correlation has been increasing relevance in several fields, among them quantum communication, quantum computation, quantum phase transitions, and biological systems. We demonstrate here the occurrence of the sudden-change phenomenon and immunity against some sources of noise for the quantum discord and its classical counterpart, in a room temperature nuclear magnetic resonance setup. The experiment is performed in a decohering environment causing loss of phase relations among the energy eigenstates and exchange of energy between system and environment, resulting in relaxation to a Gibbs ensemble.
References in corpus (10)
- Quantum discord and the power of one qubit
- Experimental quantum computing without entanglement
- On the quantum, classical and total amount of correlations in a quantum state
- Classical and quantum correlations under decoherence
- Quantum correlations in spin chains at finite temperatures and quantum phase transitions
- No-local-broadcasting theorem for quantum correlations
- Interpreting quantum discord through quantum state merging
- Operational interpretations of quantum discord
- Vanishing quantum discord is necessary and sufficient for completely positive maps
- Experimentally Witnessing the Quantumness of Correlations
Cited by in corpus (71)
- The classical-quantum boundary for correlations: discord and related measures
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- Quantum discord and its allies: a review
- Genuine quantum correlations in quantum many-body systems: a review of recent progress
- Comparative investigation of the freezing phenomena for quantum correlations under nondissipative decoherence
- One-norm geometric quantum discord under decoherence
- Theoretical and experimental aspects of quantum discord and related measures
- Observation of time-invariant coherence in a room temperature quantum simulator
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- Exploring multipartite quantum correlations with the square of quantum discord
- Quantum correlations between each qubit in a two-atom system and the environment in terms of interatomic distance
- Measuring bipartite quantum correlations of an unknown state
- Observation of environment-induced double sudden transitions in geometric quantum correlations
- Distributed correlations and information flows within a hybrid multipartite quantum-classical system
- Experimental analysis of the quantum complementarity principle
- Long-range quantum discord in critical spin systems
- On the optimal measurement for quantum discord of two-qubit states
- Unifying approach to the quantification of bipartite correlations by Bures distance
- Criteria for measures of quantum correlations
- Emergence of the pointer basis through the dynamics of correlations
- Necessary and sufficient conditions of freezing phenomena of quantum discord under phase damping
- Experimental investigation of quantum correlations in a two-qutrit spin system
- To freeze or not to: Quantum correlations under local decoherence
- Super-quantum correlation and geometry for Bell-diagonal states with weak measurements
- Quantifying the Nonclassicality of Operations
- Characterization of an operational quantum resource in a critical many-body system
- Experimental protection and revival of quantum correlation in open solid systems
- Quantum discord versus second-order MQ NMR coherence intensity in dimers
- Creation of quantum correlations between two atoms in a dissipative environment from an initial vacuum state
- Genuine multipartite system-environment correlations in decoherent dynamics
- Sudden change of geometric quantum discord in finite temperature reservoirs
- On the quantumness of correlations in nuclear magnetic resonance
- Classicality witness for two-qubit states
- Quantum discord in nuclear magnetic resonance systems at room temperature
- Frozen Gaussian quantum discord in photonic crystal cavity array system
- Negativity and quantum discord in Davies environments
- Monogamy deficit for quantum correlation in multipartite quantum system
- Decoherence Dynamics of Measurement-Induced Nonlocality and comparison with Geometric Discord for two qubit systems
- Experimentally freezing quantum discord in a dissipative environment using dynamical decoupling
- Sudden Change of Quantum Discord under Single Qubit Noise
- Preparing tunable Bell-diagonal states on a quantum computer
- Quantum discord under system-environment coupling: the two-qubit case
- Quantum uncertainty in critical systems with three spins interaction
- Thermal effects on the sudden changes and freezing of correlations between remote atoms in cavity QED network
- Markovian evolution of classical and quantum correlations in transverse-field XY model
- Using a Lindbladian approach to model decoherence in two coupled nuclear spins via correlated phase-damping and amplitude damping noise channels
- Quantum and classical correlations in high temperature dynamics of two coupled large spins
- Protecting quantum correlations of two qubits in independent non-Markovian environments by bang-bang pulses
- Classical memoryless noise-induced maximally discordant mixed separable steady states
- Conditions for the freezing phenomena of geometric measure of quantum discord for arbitrary two-qubit X states under non-dissipative dephasing noises
- Quantum Discord, Decoherence and Quantum Phase Transitions
- Shielding quantum discord through continuous dynamical decoupling
- Pareto-optimal solution for the quantum battle of the sexes
- Witnessing nonclassical correlations via a single-shot experiment on an ensemble of spins using NMR
- Theoretical insights on measuring quantum correlations
- Transverse Ising Model: Markovian evolution of classical and quantum correlations under decoherence
- Quantum Correlations in Cavity QED Networks
- Distribution of Mutual Information in Multipartite States
- Geometric measure of quantum discord and the geometry of a class of two-qubit states
- The sudden change phenomenon of quantum discord
- Adiabatic freezing of long-range quantum correlations in spin chains
- Adiabatic freezing of entanglement with insertion of defects in a one-dimensional Hubbard model
- Relaxation dynamics of an unlike spin pair system
- Frozen and Invariant Quantum Discord under Local Dephasing Noise
- Time-invariant Discord: High Temperature Limit and Initial Environmental Correlations
- Quantifying Nonclassicality of Correlations based on the Concept of Nondisruptive Local State Identification
- Partitions of Correlated N-Qubit Systems
- Sudden change of interferometric power for X shape states
- Quantum and classical correlations and Werner states in finite spin linear arrays
- Some aspects of the interplay between bipartite correlations and quantum channels
- Quantum discord: "discord" between the whole and its constituent