243 citations · 399 across the 5 of their papers we have counts for
5 papers
Complementarity of Private and Correctable Subsystems in Quantum Cryptography and Error Correction
Dennis Kretschmann, David W. Kribs, Robert W. Spekkens
We make an explicit connection between fundamental notions in quantum cryptography and quantum error correction. Error-correcting subsystems (and subspaces) for quantum channels ar…
A Continuity Theorem for Stinespring's Dilation
Dennis Kretschmann, Dirk Schlingemann, Reinhard F. Werner
We show a continuity theorem for Stinespring's dilation: two completely positive maps between arbitrary C*-algebras are close in cb-norm iff we can find corresponding dilations tha…
Reexamination of Quantum Bit Commitment: the Possible and the Impossible
Giacomo Mauro D'Ariano, Dennis Kretschmann, Dirk Schlingemann +1
Bit commitment protocols whose security is based on the laws of quantum mechanics alone are generally held to be impossible. In this paper we give a strengthened and explicit proof…
The Information-Disturbance Tradeoff and the Continuity of Stinespring's Representation
Dennis Kretschmann, Dirk Schlingemann, Reinhard F. Werner
Stinespring's dilation theorem is the basic structure theorem for quantum channels: it states that any quantum channel arises from a unitary evolution on a larger system. Here we p…
Quantum Channels with Memory
Dennis Kretschmann, Reinhard F. Werner
We present a general model for quantum channels with memory, and show that it is sufficiently general to encompass all causal automata: any quantum process in which outputs up to s…