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Quantum Theory & Technology Group

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Publications

Preprints

Cavity QED Beyond Rotating Wave Approximation: Photon Bunching from the Emission of Individual Qubits
L. Garziano, A. Ridolfo, S. De Liberato and S. Savasta
arXiv: 1702.00532

Cavity quantum electrothermodynamics with rotational degrees of freedom
E. Cortese, P. Lagoudakis and S. De Liberato
arXiv:1701.01689

Impact of losses and detuning on quantum vacuum emission
S. De Liberato
arXiv:1609.04249

Papers published in peer reviewed journal

Theory of nonlinear polaritonics: χ2 on a β-SiC surface
C. Gubbin, and S. De Liberato
ACS Photonics (2017)
DOI: 10.1021/acsphotonics.7b00020

Coherent coupling between localised and propagating phonon polaritons
C. Gubbin, S. A. Maier, and S. De Liberato
Phys. Rev. B 95, 035313 (2017)
arXiv:1607.05741

Real-space Hopfield diagonalization of inhomogeneous dispersive media
C. Gubbin, S. A. Maier, and S. De Liberato 
Phys. Rev. B 94, 205301 (2016)
arXiv:1605.01975

Coherent coupling between localised and propagating phonon polaritons
C. Gubbin, F. Martini, A. Politi, S. A. Maier, and S. De Liberato
Phys. Rev. Lett. 116, 246402 (2016)
arXiv:1509.09074

Ground State Electroluminescence
M. Cirio, S. De Liberato, N. Lambert, and F. Nori
Phys. Rev. Lett. 116, 113601 (2016)
arXiv:1508.05849

Self-consistent molecular adaptation induced by strong coupling
J. A. Cwik, P. Kirton, S. De Liberato, and J. Keeling
Phys. Rev. A 93, 033840 (2016)
arXiv:1506.08974

Quantum statistics of bosonic cascades
T. C. H. Liew, Y. G. Rubo, A. S. Sheremet, S. De Liberato, I. A. Shelykh, F. P. Laussy, and A. V. Kavokin
New J. Phys. 18, 023041 (2016)
arXiv:1506.06873

Theory of intersubband resonance fluorescence
N. Shammah and S. De Liberato
Phys. Rev. B 92, 201402(R) (2015)
arXiv:1506.07972

Light-matter decoupling and A^2 term detection in superconducting circuits
J. J. García-Ripoll, B. Peropadre, and S. De Liberato
Sci. Rep. 5, 16055 (2015)
arXiv:1410.7785

Perspectives for gapped bilayer graphene polaritonics
S. De Liberato
Phys. Rev. B 92, 125433 (2015)
arXiv:1507.03529

Generation of Rabi frequency radiation using exciton-polaritons
F. Barachati, S. De Liberato, and S. Kéna-Cohen
Phys. Rev. A 92, 033828 (2015)
arXiv:1506.07384

Quantum control and long-range quantum correlations in dynamical Casimir arrays
R. Stassi, S. De Liberato, L. Garziano, B. Spagnolo, and S. Savasta
Phys. Rev. A 92, 013830 (2015)
arXiv:1501.07536

Terahertz emission from AC Stark-split asymmetric intersubband transitions
N. Shammah, C. C. Phillips, and S. De Liberato
Phys. Rev. B 89, 235309 (2014)
arXiv:1404.2326

Light-matter decoupling in the deep strong coupling regime: The breakdown of the Purcell effect
S. De Liberato
Phys. Rev. Lett. 112, 016401 (2014)
arXiv:1308.2812

Comment on “System-environment coupling derived by Maxwell’s boundary
conditions from the weak to the ultrastrong light-matter coupling regime”
S. De Liberato
Phys. Rev. A 89, 017801 (2014)
arXiv:1307.5615

Radical-pair model of magnetoreception with spin–orbit coupling
N. Lambert, S. De Liberato, C. Emary, and F. Nori
New J. Phys. 15, 083024 (2013)
arXiv:1309.5882

Many-body physics of intersubband polaritons
L. Nguyen-Thê, S. De Liberato, M. Bamba, and C. Ciuti
Phys. Rev. B 87, 235322 (2013)
arXiv:1211.5039

Terahertz lasing from intersubband polariton-polariton scattering in asymmetric quantum wells
S. De Liberato, C. Ciuti, and C. C. Phillips
Phys. Rev. B 87, 241304 (2013)
arXiv:1204.4053

Quantum phases of a multimode bosonic field coupled to flat electronic bands
S. De Liberato and C. Ciuti
Phys. Rev. Lett. 110, 133603 (2013)
arXiv:1209.5273

Ultra-Strong coupling of the cyclotron transition of a two-dimensional electron gas in a THz metamaterial
G. Scalari, C. Maissen, D. Turcinková, D. Hagenmüller, S. De Liberato, C. Ciuti, D. Schuh, C. Reichl, W. Wegscheider, M. Beck, and J. Faist
Science 335, 1323 (2012)
arXiv:1111.2486

Quantum theory of intersubband polarons
S. De Liberato and C. Ciuti
Phys. Rev. B 85, 125302 (2012)
arXiv:1111.5916

Back-action effects in an all-optical model of dynamical Casimir emission
I. Carusotto, S. De Liberato, D. Gerace, and C. Ciuti
Phys. Rev. A 85, 023805 (2012)
arXiv:1107.0445

Carnot’s theorem for nonthermal stationary reservoirs
S. De Liberato and M. Ueda
Phys. Rev. E 84, 051122 (2011)
arXiv:1007.0335
Related presentation

Quantum limit of photothermal cooling
S. De Liberato, N. Lambert, and F. Nori
Phys. Rev. A 83, 033809 (2011)
arXiv:1011.6295

Quantum Szilard Engine
S. W. Kim, T. Sagawa, S. De Liberato, and M. Ueda
Phys. Rev. Lett. 106, 070401 (2011)
arXiv:1006.1471
Viewpoint

Ultrastrong Light-Matter Coupling Regime with Polariton Dots
Y. Todorov, A. M. Andrews, R. Colombelli, S. De Liberato, C. Ciuti, P. Klang, G. Strasser, and C. Sirtori
Phys. Rev. Lett. 105, 196402 (2010)
arXiv:1301.1297

Ultrastrong coupling between a cavity resonator and the cyclotron transition of a two-dimensional electron gas in the case of an integer filling factor
D. Hagenmüller, S. De Liberato, and C. Ciuti
Phys. Rev. B 81, 235303 (2010)
arXiv:1006.1471

Extracavity quantum vacuum radiation from a single qubit
S. De Liberato, D. Gerace, I. Carusotto, and C. Ciuti
Phys. Rev. A 80, 053810 (2009)
arXiv:0906.2706

Fermionized photons in an array of driven dissipative nonlinear cavities
I. Carusotto, D. Gerace, H. Tureci, S. De Liberato, C. Ciuti, and A. Imamoglu
Phys. Rev. Lett. 103, 033601 (2009)
arXiv:0812.4195

Signatures of light-matter excitations in the ultra-strong coupling regime
A. A. Anappara, S. De Liberato, A. Tredicucci, C. Ciuti, G. Biasiol, L. Sorba, and F. Beltram
Phys. Rev. B 79, 201303(R) (2009)
arXiv:0808.3720

Stimulated scattering and lasing of intersubband cavity polaritons
S. De Liberato and C. Ciuti
Phys. Rev. Lett. 102, 136403 (2009)
arXiv:0806.1691

Sub-cycle switch-on of ultrastrong light-matter interaction
G. Guenter, A. A. Anappara, J. Hees, G. Biasiol, L. Sorba, S. De Liberato, C. Ciuti, A. Tredicucci, A. Leitenstorfer, and R. Hubert
Nature 458, 178 (2009)
News & Views

Quantum theory of electron tunneling into intersubband cavity polariton states
S. De Liberato and C. Ciuti
Phys. Rev. B 79, 075317 (2009)
arXiv:0802.4091

Optical properties of atomic Mott insulators: from slow light to the dynamical Casimir effects
I. Carusotto, M. Antezza, F. Bariani, S. De Liberato, and C. Ciuti
Phys. Rev. A 77, 063621 (2008)
arXiv:0711.3105

Quantum model of microcavity intersubband electroluminescent devices
S. De Liberato and C. Ciuti
Phys. Rev. B 77, 155321 (2008)
arXiv:0711.3146

Cavity polaritons from excited-subband transitions
A. Anappara, A. Tredicucci, F. Beltram, G. Biasiol, L. Sorba, S. De Liberato, and C. Ciuti
Appl. Phys. Lett. 91, 231118 (2007)

Observing the evolution of a quantum system that does not evolve
S. De Liberato
Phys. Rev. A 76, 042107 (2007)
arXiv:0705.2393
News & Views

Quantum vacuum radiation spectra from a semiconductor microcavity with a time-modulated vacuum Rabi frequency
S. De Liberato, C. Ciuti, and I. Carusotto
Phys. Rev. Lett. 98, 103602 (2007)
arXiv:cond-mat/0611282

Tunnelling dynamics of Bose-Einstein condensate in a four wells loop shaped system
S. De Liberato and C. J. Foot
Phys. Rev. A 73, 035602 (2006)
arXiv:quant-ph/0702270

Conference proceedings

Terahertz emission from asymmetric, doped quantum wells under resonant pumping
N. Shammah, C. C. Phillips, and S. De Liberato
J. Phys. Conf. Ser. 619, 012021 (2015)

Ultrastrong light-matter coupling at terahertz frequencies with split ring resonators and inter-Landau level transitions
G. Scalari, C. Maissen, D. Hagenmüller, S. De Liberato, C. Ciuti, C. Reichl, W. Wegscheider, D. Schuh, M. Beck, and J. Faist
J. Appl. Phys. 113, 136510 (2013)

Inter-branch terahertz lasing in asymmetric intersubband polariton systems
S. De Liberato, C. Ciuti, and C. C. Phillips
Proc. International Conference on the Physics of Semiconductors (2012)
AIP Conf. Proc. 1566, 459 (2013)

Ultrastrong coupling of integer Landau Level Polaritons
D. Hagenmüller, S. De Liberato, and C. Ciuti
Proc. International Conference on the Physics of Semiconductors (2010)
AIP Conf. Proc. 1399, 457 (2011)

Switching ultrastrong light-matter coupling on a subcycle scale
R. Huber, A. A. Anappara, G. Guenter, A. Sell, A, S. De Liberato, C. Ciuti, G. Biasiol, L. Sorba, A. Tredicucci, and A. Leitenstorfer
J. App. Phys. 109, 102418 (2011)

Terahertz Quantum Optics with Solid-state Systems
A. Leitenstorfer, R. Huber, A. A. Sell, A. A. Anappara, G. Guenter, S. Leinss, K. Von Volkmann, T. Kampfrath, M. Wolf, S. De Liberato, C. Ciuti, G. Biasiol, L. Sorba, and A. Tredicucci
Proc. 35th International Conference on Infrared, Millimeter, and Terahertz Waves (2010)

How fast electrons and photons mix: sub-cycle switching of intersubband cavity polaritons
R. Huber, A. A. Anappara, G. Guenter, A. Sell, A, G. Biasiol, L. Sorba, A. Tredicucci, S. De Liberato, C. Ciuti, and A. Leitenstorfer
J. Phys. Conf. Ser. 193, 012060 (2009)

Book chapters

Towards Intersubband Polaritonics: How Fast Can Light and Electrons Mate?
A. A. Anappara, L. Sorba, A. Tredicucci, G. Günter, A. Sell, A. Leitenstorfer, R. Huber, S. De Liberato, C. Ciuti, and G. Biasiol
In S. Luryi, J. Xu, and A. Zaslavsky, (eds) (2010) Future Trends in Microelectronics: From Nanophotonics to Sensors and Energy,
John Wiley & Sons, Inc., Hoboken, NJ, USA.

Patents

Device for aiding the management of visualization objects
C. Chanal and S. De Liberato
Patent WO 2014027155 A1

PhD Thesis

Cavity Quantum Electrodynamics and Intersubband Polaritonics of a Two Dimensional Electron Gas
S. De Liberato
Available here