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14 papers · 2 filters
Optimal control for one-qubit quantum sensing
F. Poggiali, P. Cappellaro, N. Fabbri
Quantum systems can be exquisite sensors thanks to their sensitivity to external perturbations. This same characteristic also makes them fragile to external noise. Quantum control…
Interferometric sensitivity and entanglement by scanning through quantum phase transitions in spinor Bose-Einstein condensates
P. Feldmann, M. Gessner, M. Gabbrielli +4
Recent experiments have demonstrated the generation of entanglement by quasi-adiabatically driving through quantum phase transitions of a ferromagnetic spin-1 Bose-Einstein condens…
Stiffness of Probability Distributions of Work and Jarzynski Relation for Non-Gibbsian Initial States
Daniel Schmidtke, Lars Knipschild, Michele Campisi +2
We consider closed quantum systems (into which baths may be integrated) that are driven, i.e., subject to time-dependent Hamiltonians. Our point of departure is the assumption that…
Imaging correlations in heterodyne-detected spectra for quantum sensing
A. Pontin, J. E. Lang, A. Chowdhury +6
The extraordinary sensitivity of the output field of an optical cavity to small quantum-scale displacements has led to breakthroughs such as the first detection of gravitational wa…
How to Suppress Dark States in Quantum Networks and Bio-Engineered Structures
T. P. Le, Ludovica Donati, Simone Severini +1
Transport across quantum networks underlies many problems, from state transfer on a spin network to energy transport in photosynthetic complexes. However, networks can contain dark…
Measurement-induced strong Kerr nonlinearity for weak quantum states of light
Luca S. Costanzo, Antonio S. Coelho, Nicola Biagi +3
Strong nonlinearity at the single photon level represents a crucial enabling tool for optical quantum technologies. Here we report on experimental implementation of a strong Kerr n…