Entanglement is necessary for emergent classicality in all physical theories
arXiv:1705.08028 · doi:10.1103/PhysRevLett.119.080503
Abstract
One of the most striking features of quantum theory is the existence of entangled states, responsible for Einstein's so called "spooky action at a distance". These states emerge from the mathematical formalism of quantum theory, but to date we do not have a clear idea of the physical principles that give rise to entanglement. Why does nature have entangled states? Would any theory superseding classical theory have entangled states, or is quantum theory special? One important feature of quantum theory is that it has a classical limit, recovering classical theory through the process of decoherence. We show that any theory with a classical limit must contain entangled states, thus establishing entanglement as an inevitable feature of any theory superseding classical theory.
References in corpus (5)
Cited by in corpus (27)
- General probabilistic theories: An introduction
- A no-go theorem on the nature of the gravitational field beyond quantum theory
- Entanglement and superposition are equivalent concepts in any physical theory
- Accessible fragments of generalized probabilistic theories, cone equivalence, and applications to witnessing nonclassicality
- Classical theories with entanglement
- Entanglement and objectivity in pure dephasing models
- Quantum computation is the unique reversible circuit model for which bits are balls
- Classicality without local discriminability: decoupling entanglement and complementarity
- Simple proof of the impossibility of bit-commitment in generalised probabilistic theories using cone programming
- Dense Coding with Locality Restriction for Decoder: Quantum Encoders vs. Super-Quantum Encoders
- Testing quantum theory by generalizing noncontextuality
- Perfect Discrimination in Approximate Quantum Theory of General Probabilistic Theories
- Universal structure of objective states in all fundamental causal theories
- Measurement incompatibility is strictly stronger than disturbance
- Compositional resource theories of coherence
- Quantum Darwinism and the spreading of classical information in non-classical theories
- Shadows and subsystems of generalized probabilistic theories: when tomographic incompleteness is not a loophole for contextuality proofs
- Entangled electron-photon pair production by channel-exchange in high-energy Compton scattering
- A no-go theorem for theories that decohere to quantum mechanics
- Simulating all multipartite non-signalling channels via quasiprobabilistic mixtures of local channels in generalised probabilistic theories
- Spin-Energy Entanglement of a Time-Focused Neutron
- Theory-independent monitoring of the decoherence of a superconducting qubit with generalized contextuality
- Intermediate determinism in general probabilistic theories
- On the covariance matrix for Gaussian states
- On the geometric phase for Gaussian states
- Entanglement transitions induced by large deviations
- S-matrix interpretation in categorical quantum mechanics