Quantum steering with imprecise measurements
arXiv:2308.15356 · doi:10.1103/PhysRevLett.132.070204
Abstract
We study quantum steering experiments without assuming that the trusted party can perfectly control their measurement device. Instead, we introduce a scenario in which these measurements are subject to small imprecision. We show that small measurement imprecision can have a large detrimental influence in terms of false positives for steering inequalities, and that this effect can become even more relevant for high-dimensional systems. We then introduce a method for taking generic measurement imprecision into account in tests of bipartite steering inequalities. The revised steering bounds returned by this method are analytical, easily computable, and are even optimal for well-known families of arbitrary-dimensional steering tests. Furthermore, it applies equally well to generalised quantum steering scenarios, where the shared quantum state does not need to be separable, but is instead limited by some other entanglement property.
arXiv commentSee also the paper of S. Sarkar on arXiv today
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Cited by in corpus (9)
- Genuine multipartite entanglement detection with imperfect measurements: concept and experiment
- Quantum stochastic communication via high-dimensional entanglement
- Information capacity of quantum communication under natural physical assumptions
- Detecting quantum steering in networks
- Imprecision plateaus in quantum steering
- A physical noise model for quantum measurements
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- Quantum Assemblage Tomography