Violation of a Bell inequality certifies that the underlying state must be entangled in a device-
independent way, although there exist some entangled states which do not violate such an …

Entangled states are undoubtedly an integral part of various quantum information
processing tasks. On the other hand, absolutely separable states which cannot be made …

Entanglement witnesses form an effective method to locally detect entanglement in the
laboratory without having the prior knowledge of the full density matrix. However, separable …

Quantum entanglement is a critical physical process in quantum mechanics and quantum
information theory. It is a required process in quantum computing, quantum teleportation …

Loopholes present in an experimental set-up can significantly affect the reliability of
entanglement detection. We discuss two methods for detection of entanglement: one is by …

Entanglement witnesses (EWs) are one of the most effective methods to detect
entanglement. It is known that nonlinear EW provide better entanglement detection than …

The concept of entanglement witnesses forms a useful technique to detect entanglement in
realistic quantum devices. Measurement-device-independent nonlinear entanglement …