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33 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…
Quantum search on graphene lattices
Iain Foulger, Sven Gnutzmann, Gregor Tanner
We present a continuous-time quantum search algorithm on a graphene lattice. This provides the sought-after implementation of an efficient continuous-time quantum search on a two-d…
Quantum Fisher Information: Variational principle and simple iterative algorithm for its efficient computation
Katarzyna Macieszczak
We derive a new variational principle for the quantum Fisher information leading to a simple iterative alternating algorithm, the convergence of which is proved. The case of a fixe…
Genuine tripartite entanglement and nonlocality in Bose-Einstein condensates by collective atomic recoil
Samanta Piano, Gerardo Adesso
We study a system represented by a Bose-Einstein condensate interacting with a cavity field in presence of a strong off-resonant pumping laser. This system can be described by a th…
Single photon production by rephased amplified spontaneous emission
Robin N Stevenson, Michael R Hush, Andre R R Carvalho +3
The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spo…
Maximum likelihood versus likelihood-free quantum system identification in the atom maser
Catalin Catana, Theodore Kypraios, Madalin Guta
We consider the system identification problem of estimating a dynamical parameter of a Markovian quantum open system (the atom maser), by performing continuous time measurements in…