No-cloning theorem is fundamental for quantum mechanics and for quantum information
science that states an unknown quantum state cannot be cloned perfectly. However, we can …

Quantum information cannot be perfectly cloned, but approximate copies of quantum
information can be generated. Quantum telecloning combines approximate quantum …

Distinguishing unknown non-orthogonal qubits is an essential requirement for addressing
various challenges in quantum computation, including quantum machine learning, quantum …

In this work, we extensively study the problem of broadcasting of quantum correlations
(QCs). This includes broadcasting of quantum entanglement as well as correlations that go …

We quantify the amount of correlation generated between two different output modes in
imperfect cloning and deletion processes. We use three different measures of quantum …

In this work, we analyze the performance of various deleting machines and their
concatenation. It is observed that concatenation of Pati–Braunstein deleting machine and …

Generalized entropies and relative entropies are the subject of active research. Similar to
the standard relative entropy, the relative q-entropy is generally unbounded for q> 1. Upper …

New quantum distance is introduced as a half-sum of several singular values of difference
between two density operators. This is, up to factor, the metric induced by so-called Ky Fan …

In this work, we study the performance of one shot and concatenated deleting machines
(DMs). We show that the output state of one shot DMs are mixed inseparable, and do not …

We consider causality respecting (CR) quantum systems interacting with closed timelike
curves (CTCs), within the Deutsch model. We introduce the concepts of pop**-up and …