Nanophysics and Quantum Systems
Specific mission
The research activities of the Nanophysics and Quantum Systems (NQS) Section, led by Prof. Fausto Rossi at the Department of Applied Science and Technology, cover a broad spectrum of topics, including the theory and simulation of non-equilibrium phenomena in nanostrucutred materials, the modeling of many-body quantum processes and correlation effects in low-dimensional systems, the investigation of quantum phase transitions and topological materials, as well as the mathematical fundation of quantum information/computation and quantum optics. The investigations at NQS find application in nanoelectronics, optoelectronic devices and the physics of cold atoms. In particular, the studies carried out at NQS by F. Rossi and R.C. Iotti have led to the design and fabrication of the first terahertz quantum cascade laser, and to the first proposal of all-optical quantum computer based on semiconductor macroatoms/molecules.
Main research topics
- Quantum processes in opto-electronic nanomaterials and nanodevices;
- Correlation Effects in low-dimensional systems;
- Quantum Transport phenomena and mesoscopic Physics;
- Topological Materials, Graphene and hybrid systems;
- Quantum Information: Entanglement, Quantum phase Transitions and Solid-state processing;
- Quantum effects in trapped cold atomic and ionic gases
Main partnerships
- University of Würzburg (Germany),
- CEA Grenoble (France),
- CNR-NEST and Scuola Normale Superiore di Pisa (Italy),
- INRIM (Italy)
- CNR and Physics Department of the University of Bologna (Italy)
- Centro Atomico de Bariloche & Universidad de Buenos Aires (Argentina)
- University of Southern California (USA)
- RF-microwave and computational electronics (DET, Politecnico di Torino, Italy)
- CNR Bologna
- Sissa and CNR Democritos, Trieste (Italy)
- Boston University
- MIT (USA)
Projects and publications
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Selected recent publications
2016-
Photoexcitation of electron wave packets in quantum spin Hall edge states: Effects of chiral anomaly from a localized electric pulse
Article
Dolcini, Fabrizio; Iotti, Rita Claudia; Montorsi, Arianna; Rossi, Fausto
PHYSICAL REVIEW. B
American Physical Society
Vol.94 pp.14 (pp.1-14) ISSN:2469-9950 DOI:10.1103/PhysRevB.94.165412 -
Off-resonance regimes in nonlinear quantum Rabi models
Article
Penna, Vittorio; Raffa, Francesco Antonino
PHYSICAL REVIEW A
APS
Vol.93 pp.10 (pp.1-10) ISSN:2469-9926 DOI:10.1103/PhysRevA.93.043814
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Electronic phase coherence vs. dissipation in solid-state quantum devices: Two approximations are better than one
Article
Iotti, Rita Claudia; Rossi, Fausto
EUROPHYSICS LETTERS
Institute of Physics Publishing
Vol.112 pp.6 ISSN:0295-5075 DOI:10.1209/0295-5075/112/67005 -
Electron-phonon coupling in metallic carbon nanotubes: Dispersionless electron propagation despite dissipation
Article
Rosati, Roberto; Dolcini, Fabrizio; Rossi, Fausto
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
American Physical Society
Vol.92 pp.12 ISSN:1098-0121 DOI:10.1103/PhysRevB.92.235423 -
Quantum correlation dynamics in photosynthetic processes assisted by molecular vibrations
Article
Giorgi, G. L.; Roncaglia, Marco; Raffa, Francesco Antonino; Genovese, M.
ANNALS OF PHYSICS
Elsevier
Vol.361 pp.10 (pp.72-81) ISSN:0003-4916 DOI:10.1016/j.aop.2015.06.002 -
Topological Josephson phi0-junctions
Article
Dolcini, Fabrizio; Houzet, Manuel; . Meyer, Julia S.
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
American Physical Society
Vol.92 pp.7 (pp.035428-1-035428-7) ISSN:1098-0121 DOI:10.1103/PhysRevB.92.035428
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Bipartite entanglement of quantum states in a pair basis
Article
Roncaglia, Marco; Montorsi, Arianna; Marco, Genovese
PHYSICAL REVIEW A
AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Vol.90 pp.8 ISSN:1050-2947 DOI:10.1103/PhysRevA.90.062303 -
Scattering nonlocality in quantum charge transport: Application to semiconductor nanostructures
Article
Rosati, Roberto; Rossi, Fausto
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
American Physical Society
Vol.89 pp.16 (pp.205415-1-205415-16) ISSN:1098-0121 DOI:10.1103/PhysRevB.89.205415 -
Where do bosons actually belong?
Article
Marzuoli, A.; Raffa, Francesco Antonino; Rasetti, Mario
JOURNAL OF PHYSICS. A, MATHEMATICAL AND THEORETICAL
Institute Of Physics (IOP)
Vol.47 pp.9 (pp.275202-1-275202-9) ISSN:1751-8113 DOI:10.1088/1751-8113/47/27/275202 -
Tunnel junction of helical edge states: Determining and controlling spin-preserving and spin-flipping processes through transconductance
Article
Sternativo, Pietro; Dolcini, Fabrizio
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
American Physical Society (APS)
Vol.89 pp.14 (pp.035415-1-035415-14) ISSN:1098-0121 DOI:10.1103/PhysRevB.89.035415
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Coupled carrier–phonon nonequilibrium dynamics in terahertz quantum cascade lasers: a Monte Carlo analysis
Article
Iotti, Rita Claudia; Rossi, Fausto
NEW JOURNAL OF PHYSICS
Institute of Physics Publishing, IOP PUBLISHING LTD,
Vol.15 pp.10 ISSN:1367-2630 DOI:10.1088/1367-2630/15/7/075027 -
How hidden orders generate gaps in one-dimensional fermionic systems
Article
Barbiero, L.; Montorsi, Arianna; Roncaglia, Marco
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
American Physical Society (APS)
Vol.88 pp.5 (pp.035109-1-035109-5) ISSN:1098-0121 DOI:10.1103/PhysRevB.88.035109 -
Wigner-function formalism applied to semiconductor quantum devices: Failure of the conventional boundary condition scheme
Article
Rosati, Roberto; Dolcini, Fabrizio; Iotti, Rita Claudia; Rossi, Fausto
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
American Physical Society (APS)
Vol.88 pp.16 (pp.035401-1-035401-16) ISSN:1098-0121 DOI:10.1103/PhysRevB.88.035401
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Non-local order parameters for the 1D Hubbard model
Article
Montorsi, Arianna; Roncaglia, M.
PHYSICAL REVIEW LETTERS
American Physical Society
Vol.109 pp.5 ISSN:0031-9007 DOI:10.1103/PhysRevLett.109.236404 -
Phonon-Induced Backscattering in Helical Edge States
Article
Budich, J. C.; Dolcini, Fabrizio; Recher, P.; Trauzettel, B.
PHYSICAL REVIEW LETTERS
American Physical Society
Vol.108 pp.4 (pp.086602-1-086602-4) ISSN:0031-9007 DOI:10.1103/PhysRevLett.108.086602
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Photoexcitation of electron wave packets in quantum spin Hall edge states: Effects of chiral anomaly from a localized electric pulse