Hidden entanglement in the presence of random telegraph dephasing noise

Abstract

Entanglement dynamics of two noninteracting qubits, locally affected by random telegraph noise at pure dephasing, exhibits revivals. These revivals are not due to the action of any nonlocal operation, thus their occurrence may appear paradoxical since entanglement is by definition a nonlocal resource. We show that a simple explanation of this phenomenon may be provided by using the (recently introduced) concept of "hidden" entanglement, which signals the presence of entanglement that may be recovered with the only help of local operations.

arXiv comment8 pages, 1 figure, submitted to Physica Scripta on September 17th 2012

References in corpus (26)

• Quantum entanglement
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Mixed State Entanglement and Quantum Error Correction
• Dynamical decoupling and noise spectroscopy with a superconducting flux qubit
• Non-Markovian effects on the dynamics of entanglement
• Decoherence in a superconducting quantum bit circuit
• Sudden Birth Versus Sudden Death of Entanglement in Multipartite Systems
• Decoherence and 1/f noise in Josephson qubits
• Charge echo in a Cooper-pair box
• Entanglement dynamics of two independent qubits in environments with and without memory
• Revival of quantum correlations without system-environment back-action
• Low-frequency noise as a source of dephasing of a qubit
• Non-Gaussian low-frequency noise as a source of qubit decoherence
• Entanglement cost of mixed states
• Initial decoherence in solid state qubits
• Dynamical suppression of telegraph and 1/f noise due to quantum bistable fluctuator
• Entanglement monogamy and entanglement evolution in multipartite systems
• Disentanglement and decoherence from classical non-Markovian noise: Random telegraph noise
• Entanglement within the Quantum Trajectory Description of Open Quantum Systems
• Is charge noise in single electron transistors and charge qubits caused by metallic grains?
• Decoherence times of universal two-qubit gates in the presence of broad-band noise
• Dynamics of Entanglement Transfer Through Multipartite Dissipative Systems
• Superconducting qubit manipulated by fast pulses: experimental observation of distinct decoherence regimes
• Optimal operating conditions of an entangling two-transmon gate
• Entanglement Echoes in Quantum Computation
• Broadband noise decoherence in solid-state complex architectures

Cited by in corpus (13)

• Cavity-based architecture to preserve quantum coherence and entanglement
• Preserving entanglement and nonlocality in solid-state qubits by dynamical decoupling
• Dynamics of quantum correlations in colored environments
• Harnessing non-Markovian quantum memory by environmental coupling
• Distributed correlations and information flows within a hybrid multipartite quantum-classical system
• Hidden entanglement, system-environment information flow and non-Markovianity
• Overview on the phenomenon of two-qubit entanglement revivals in classical environments
• Collapse-revival of quantum discord and entanglement
• Searching for exceptional points and inspecting non-contractivity of trace distance in (anti-)$\mathcal{P}\mathcal{T}-$symmetric systems
• Non-Markovianity by undersampling in quantum optical simulators
• Generalized approach to quantify correlations in bipartite quantum systems
• Emergence of maximal hidden quantum correlations and its trade-off with the filtering probability in dissipative two-qubit systems
• Comparison of Perfect and Quasi Werner States