Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Istituto di Fotonica e NanotecnologieIT287 papers
- University of MilanIT253 papers
- Centre National de la Recherche ScientifiqueFR237 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di MilanoIT232 papers
- Sapienza University of RomeIT155 papers
- Italian Institute of TechnologyIT125 papers
- University of Milano-BicoccaIT115 papers
- National Research CouncilLK111 papers
- University of GenoaIT102 papers
- University of Rome Tor VergataIT102 papers
- University of BolognaIT101 papers
- University of Naples Federico IIIT97 papers
19 papers · 2 filters
Non-Hermitian bidirectional robust transport
Stefano Longhi
Transport of quantum or classical waves in open systems is known to be strongly affected by non-Hermitian terms that arise from an effective description of system-enviroment intera…
Probing quantum state space: does one have to learn everything to learn something?
Claudio Carmeli, Teiko Heinosaari, Jussi Schultz +1
Determining the state of a quantum system is a consuming procedure. For this reason, whenever one is interested only in some particular property of a state, it would be desirable t…
Localization, quantum resonances and ratchet acceleration in a periodically-kicked -symmetric quantum rotator
Stefano Longhi
We consider wave transport phenomena in a -symmetric extension of the periodically-kicked quantum rotator model and reveal that dynamical localization assists the unb…
Robust unidirectional transport in a one-dimensional metacrystal with long-range hopping
Stefano Longhi
In two- and three-dimensional structures, topologically-protected chiral edge modes offer a powerful mean to realize robust light transport. However, little attention has been paid…
Experimental nonlocality-based network diagnostics of mutipartite entangled states
Mario A. Ciampini, Caterina Vigliar, Valeria Cimini +8
Quantum networks of growing complexity play a key role as resources for quantum computation; the ability to identify the quality of their internal correlations will play a crucial…
A quantum entropy source on an InP photonic integrated circuit for random number generation
Carlos Abellan, Waldimar Amaya, David Domenech +5
Random number generators are essential to ensure performance in information technologies, including cryptography, stochastic simulations and massive data processing. The quality of…
PT-symmetric quantum oscillator in an optical cavity
Stefano Longhi
The quantum harmonic oscillator with parity-time () symmetry, obtained from the ordinary (Hermitian) quantum harmonic oscillator by an imaginary displacement of the s…
Quantum incompatibility in collective measurements
Claudio Carmeli, Teiko Heinosaari, Daniel Reitzner +2
We study the compatibility (or joint measurability) of quantum observables in a setting where the experimenter has access to multiple copies of a given quantum system, rather than…
Backflash light characterization to prevent QKD zero-error hacking
A. Meda, I. P. Degiovanni, A. Tosi +3
Single photon avalanche diodes (SPADs) are the most commercially diffused solution for single-photon counting in quantum key distribution (QKD) applications. However, the secondary…
Quantum decay and amplification in a non-Hermitian unstable continuum
Stefano Longhi
The decay of a bound state weakly-coupled to a non-Hermitian tight-binding unstable continuum, i.e. a continuum of states comprising energies with positive imaginary part, is theor…
Efficient Pure State Quantum Tomography from Five Orthonormal Bases
Claudio Carmeli, Teiko Heinosaari, Michael Kech +2
For any finite dimensional Hilbert space, we construct explicitly five orthonormal bases such that the corresponding measurements allow for efficient tomography of an arbitrary pur…
Quantum state transfer by time reversal in the continuum
Stefano Longhi
A method for high-fidelity quantum state transfer in a quantum network coupled to a continuum, based on time reversal in the continuum after decay, is theoretically suggested. Prov…
Tight-binding lattices with an oscillating imaginary gauge field
Stefano Longhi
We consider non-Hermitian dynamics of a quantum particle hopping on a one-dimensional tight-binding lattice made of sites with asymmetric hopping rates induced by a time-period…
Photonic Simulation of Entanglement Growth After a Spin Chain Quench
Ioannis Pitsios, Leonardo Banchi, Adil S. Rab +8
The time evolution of quantum many-body systems is one of the least understood frontiers of physics. The most curious feature of such dynamics is, generically, the growth of quantu…
Optical realization of the dissipative quantum oscillator
Stefano Longhi, Shane M. Eaton
An optical realization of the damped quantum oscillator, based on transverse light dynamics in an optical resonator with slowly-moving mirrors, is theoretically suggested. The opti…
Experimental Perfect Quantum State Transfer
Robert J. Chapman, Matteo Santandrea, Zixin Huang +5
The transfer of data is a fundamental task in information systems. Microprocessors contain dedicated data buses that transmit bits across different locations and implement sophisti…
Path-polarization hyperentangled and cluster states of photons on a chip
Mario A. Ciampini, Adeline Orieux, Stefano Paesani +6
Encoding many qubits in different degrees of freedom (DOFs) of single photons is one of the routes towards enlarging the Hilbert space spanned by a photonic quantum state. Hyperent…
Experiment Investigating the Connection between Weak Values and Contextuality
F. Piacentini, A. Avella, M. P. Levi +8
Weak value measurements have recently given rise to a large interest for both the possibility of measurement amplification and the chance of further quantum mechanics foundations i…
Non-Hermitian tight-binding network engineering
Stefano Longhi
We suggest a simple method to engineer a tight-binding quantum network based on proper coupling to an auxiliary non-Hermitian cluster. In particular, it is shown that effective com…