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6 papers · 2 filters
Realization of Quantum Digital Signatures without the requirement of quantum memory
Robert J. Collins, Ross J. Donaldson, Vedran Dunjko +5
Digital signatures are widely used to provide security for electronic communications, for example in financial transactions and electronic mail. Currently used classical digital si…
Time and probability: From classical mechanics to relativistic Bohmian mechanics
H. Nikolic
Bohmian mechanics can be generalized to a relativistic theory without preferred foliation, with a price of introducing a puzzling concept of spacetime probability conserved in a sc…
Quantum Digital Signatures without quantum memory
Verdan Dunjko, Petros Wallden, Erika Andersson
Quantum Digital Signatures (QDS) allow for the exchange of messages from one sender to multiple recipients, with the guarantee that messages cannot be forged or tampered with. Addi…
How (not) to teach Lorentz covariance of the Dirac equation
H. Nikolic
In the textbook proofs of Lorentz covariance of the Dirac equation, one treats the wave function as a spinor and gamma matrices as scalars, leading to a quite complicated formalism…
Quantum random flip-flop based on random photon emitter and its applications
Mario Stipcevic
We propose, experimentally realize and study possible applications of a new type of logic element: random flip-flop. By definition it operates similarly to a conventional flip-flop…
Composable security of delegated quantum computation
Vedran Dunjko, Joseph F. Fitzsimons, Christopher Portmann +1
Delegating difficult computations to remote large computation facilities, with appropriate security guarantees, is a possible solution for the ever-growing needs of personal comput…