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 …

In the task cryptographers call bit commitment, one party encrypts a prediction in a way that
cannot be decrypted until they supply a key, but has only one valid key. Bit commitment has …

The impossibility of perfect cloning and state estimation are two fundamental results in
quantum mechanics. It has been conjectured that quantum cloning becomes equivalent to …

In this work, we investigate the joint measurability of quantum effects and connect it to the
study of free spectrahedra. Free spectrahedra typically arise as matricial relaxations of linear …

While exact cloning of an unknown quantum state is prohibited by the linearity of quantum
mechanics, approximate cloning is possible and has been used, eg, to derive limits on the …

The inability to produce two perfect copies of an unknown state is inherently linked with the
inability to produce maximal entanglement between multiple spins. Despite this, there is no …

The history of quantum cloning can be traced back to the controversial story of a paper by
Herbert [1982] entitled “FLASH–A superluminal communicator based upon a new kind of …

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

Alice gives Bob an unknown localized physical state at some point P. At some point Q in the
causal future of P, Alice will ask Bob for the state back. Bob knows this, but does not know at …

We investigate some basic scenarios in which a given set of bipartite quantum states may
consistently arise as the set of reduced states of a global N-partite quantum state. Intuitively …