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18 papers · 2 filters
Quantum metrology for relativistic quantum fields
Mehdi Ahmadi, David Edward Bruschi, Ivette Fuentes
In quantum metrology quantum properties such as squeezing and entanglement are exploited in the design of a new generation of clocks, sensors and other measurement devices that can…
Towards universal quantum computation through relativistic motion
David Edward Bruschi, Carlos Sabín, Pieter Kok +3
We show how to use relativistic motion and local phase shifts to generate continuous variable Gaussian cluster states within cavity modes. Our results can be demonstrated experimen…
Sampling generalized cat states with linear optics is probably hard
Peter P. Rohde, Keith R. Motes, Paul Knott +3
Boson-sampling has been presented as a simplified model for linear optical quantum computing. In the boson-sampling model, Fock states are passed through a linear optics network an…
Memory-assisted measurement-device-independent quantum key distribution
Christiana Panayi, Mohsen Razavi, Xiongfeng Ma +1
A protocol with the potential of beating the existing distance records for conventional quantum key distribution (QKD) systems is proposed. It borrows ideas from quantum repeaters…
Spacetime effects on satellite-based quantum communications
David Edward Bruschi, Tim Ralph, Ivette Fuentes +2
We investigate the consequences of space-time being curved on space-based quantum communication protocols. We analyze tasks that require either the exchange of single photons in a…
Signatures of the collapse and revival of a spin Schrödinger cat state in a continuously monitored field mode
R. D. Wilson, M. J. Everitt, W. J. Munro +1
We study the effects of continuous measurement of the field mode during the collapse and revival of spin Schrödinger cat states in the Tavis-Cummings model of N qubits (two-level q…