Quantum probes to assess correlations in a composite system
arXiv:1302.0205 · doi:10.1103/PhysRevA.88.012108
Abstract
We suggest and demonstrate experimentally a strategy to obtain relevant information about a composite system by only performing measurements on a small and easily accessible part of it, which we call quantum probe. We show in particular how quantitative information about the angular correlations of couples of entangled photons generated by spontaneous parametric down conversion is accessed through the study of the trace distance between two polarization states evolved from different initial conditions. After estimating the optimal polarization states to be used as quantum probe, we provide a detailed analysis of the connection between the increase of the trace distance above its initial value and the amount of angular correlations.
6 pages, 4 figures
References in corpus (10)
- An Open-System Quantum Simulator with Trapped Ions
- Foundations and Measures of Quantum Non-Markovianity
- Witness for initial system-environment correlations in open system dynamics
- Initial correlations in open system's dynamics: The Jaynes-Cummings model
- Optimizing type-I polarization-entangled photons
- Homodyne estimation of Gaussian quantum discord
- Non-Markovian probes in ultracold gases
- Interaction-induced correlations and non-Markovianity of quantum dynamics
- Properties of entangled photon pairs generated by a CW laser with small coherence time: theory and experiment
- A novel method to investigate how the spatial correlation of the pump beam affects the purity of polarization entangled states
Cited by in corpus (23)
- Non-Markovian dynamics in open quantum systems
- Quantum stochastic processes and quantum non-Markovian phenomena
- Non-Markovianity of a quantum emitter in front of a mirror
- Continuous-variable quantum probes for structured environments
- Endurance of quantum coherence due to particle indistinguishability in noisy quantum networks
- Experimental investigation of the effect of classical noise on quantum non-Markovian dynamics
- Collapse and revival of quantum coherence for a harmonic oscillator interacting with a classical fluctuating environment
- Two-step procedure to discriminate discordant from classical correlated or factorized states
- Nonlocal memory assisted entanglement distribution in optical fibers
- Lattice quantum magnetometry
- Criticality of environmental information obtainable by dynamically controlled quantum probes
- Non-divisibility vs backflow of information in understanding revivals of quantum correlations for continuous-variable systems interacting with fluctuating environments
- High-order dispersion effects in two-photon interference
- Quantum walker as a probe for its coin parameter
- Determining the squeezing in multimode fields using nonlocal quantum probes
- Dynamical paths and universality in continuous variables open systems
- Non-equilibrium quantum probing through linear response
- Quantum sensing of curvature
- The local detection method: Dynamical detection of quantum discord with local operations
- Experimentally determining the incompatibility of two qubit measurements
- Quantum probes for quantum wells
- Experimental realization of local-to-global noise transition in a two-qubit optical simulator
- Manifestation of critical effects in environmental parameter estimation using a quantum sensor under dynamical control