15 papers
Co-transmission of classical data and continuous-variable entanglement over a single quantum channel
Nicholas Zaunders, Timothy C. Ralph
Displacement-based simultaneous quantum-classical communications (SQCC) protocols, as originally proposed, are generally incompatible with the majority of useful quantum communicat…
Can a quantum circuit detect the Unruh effect?
Pravin Kumar Dahal, Timothy C. Ralph, William J. Munro +2
The Unruh effect predicts that an accelerating observer perceives the Minkowski vacuum as a thermal bath, yet direct detection remains experimentally inaccessible. Its timelike cou…
Generalised simultaneous transmission of arbitrary quantum states and classical information
Nicholas Zaunders, Timothy C. Ralph
We present a protocol which allows for arbitrary optical quantum states to simultaneously carry and transmit classical data, without sacrificing the integrity of either the quantum…
Utility of noiseless linear amplification and attenuation in single-rail discrete-variable quantum communications
Ozlem Erkilic, Aritra Das, Angela A. Baiju +3
Quantum communication offers many applications, with teleportation and superdense coding being two of the most fundamental. In these protocols, pre-shared entanglement enables eith…
Time-energy uncertainty relation from subcycle mode vacuum fluctuations of a quantum field
Achintya Sajeendran, Timothy C. Ralph
The time-energy uncertainty relation is often invoked as a heuristic explanation for virtual particles in interacting quantum field theories. However, this interpretation breaks do…
Entanglement distribution via satellite: an evaluation of competing protocols assuming realistic free-space optical channels
Nicholas Zaunders, Timothy C. Ralph
A key technical requirement of any future quantum network is the ability to distribute quantum-entangled resources between two spatially separated points at a high rate and high fi…