Novel Schemes for Directly Measuring Entanglement of General States
arXiv:0804.2246 · doi:10.1103/PhysRevLett.101.190503
Abstract
An intrinsic relation between maximally entangled states and entanglement measures is revealed, which plays a role in establishing connections for different entanglement quantifiers. We exploit the basic idea and propose a framework to construct schemes for directly measuring entanglement of general states. In particular, we demonstrate that rank-1 local factorizable projective measurements, which are achievable with only one copy of entangled state involved at a time in a sequential way, are sufficient to directly determine the concurrence of arbitrary two-qubit entangled state.
References in corpus (10)
- Criticality, the area law, and the computational power of PEPS
- Diverging Entanglement Length in Gapped Quantum Spin Systems
- Concurrence of arbitrary dimensional bipartite quantum states
- Quantum computing with collective ensembles of multi-level systems
- Sequential Generation of Matrix-Product States in Cavity QED
- Measuring Multipartite Concurrence with a Single Factorizable Observable
- Holographic quantum computing
- Concurrence via entanglement witnesses
- General construction of noiseless networks detecting entanglement with help of linear maps
- Measurable Concurrence of Mixed States
Cited by in corpus (7)
- Entanglement detection
- Entanglement dynamics of a many-body localized system coupled to a bath
- Detecting entanglement in quantum many-body systems via permutation moments
- Entanglement detection in arbitrary dimensional bipartite quantum systems through partial realigned moments
- Certifying Quantum Temporal Correlation via Randomized Measurements: Theory and Experiment
- Dynamics of Negativity of a Wannier-Stark Many-Body Localized System Coupled to a Bath
- Singular value transformation for unknown quantum channels