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- University of OxfordGB52 papers
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5 papers · 2 filters
Perturbatively-perfect many-body transfer
Wayne Jordan Chetcuti, Claudio Sanavio, Salvatore Lorenzo +1
The coherent transfer of excitations between different locations of a quantum many-body system is of primary importance in many research areas, from transport properties in spintro…
Optimal estimation with quantum optomechanical systems in the nonlinear regime
Fabienne Schneiter, Sofia Qvarfort, Alessio Serafini +4
We study the fundamental bounds on precision measurements of parameters contained in a time-dependent nonlinear optomechanical Hamiltonian, which includes the nonlinear light-matte…
Time-evolution of nonlinear optomechanical systems: Interplay of mechanical squeezing and non-Gaussianity
Sofia Qvarfort, Alessio Serafini, André Xuereb +3
We solve the time evolution of a nonlinear optomechanical Hamiltonian with arbitrary time-dependent mechanical displacement, mechanical single-mode squeezing and a time-dependent o…
Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre
Sören Wengerowsky, Siddarth Koduru Joshi, Fabian Steinlechner +14
Quantum key distribution (QKD) based on entangled photon pairs holds the potential for repeater-based quantum networks connecting clients over long distance. We demonstrate long-di…
Chimera states in small disordered optomechanical arrays
Karl Pelka, Vittorio Peano, André Xuereb
Synchronization of weakly-coupled non-linear oscillators is a ubiquitous phenomenon that has been observed across the natural sciences. We study the dynamics of optomechanical arra…