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Symmetry breaking and non-ergodicity in a driven-dissipative ensemble of multilevel atoms in a cavity (2024)
Journal Article
Hernandez, E., Suarez, E., Lesanovsky, I., Olmos, B., Courteille, P. W., & Slama, S. (2024). Symmetry breaking and non-ergodicity in a driven-dissipative ensemble of multilevel atoms in a cavity. Physical Review Research, 6(3), Article L032072. https://doi.org/10.1103/physrevresearch.6.l032072

Dissipative light-matter systems can display emergent collective behavior. Here, we report a ℤ2-symmetry-breaking phase transition in a system of multilevel 87Rb atoms strongly coupled to a weakly driven two-mode optical cavity. In the symmetry-brok... Read More about Symmetry breaking and non-ergodicity in a driven-dissipative ensemble of multilevel atoms in a cavity.

Stochastic Thermodynamics at the Quantum-Classical Boundary: A Self-Consistent Framework Based on Adiabatic-Response Theory (2024)
Journal Article
Eglinton, J., Carollo, F., Lesanovsky, I., & Brandner, K. (2024). Stochastic Thermodynamics at the Quantum-Classical Boundary: A Self-Consistent Framework Based on Adiabatic-Response Theory. Quantum, 8, Article 1486. https://doi.org/10.22331/q-2024-09-26-1486

Microscopic thermal machines promise to play an important role in future quantum technologies. Making such devices widely applicable will require effective strategies to channel their output into easily accessible storage systems like classical degre... Read More about Stochastic Thermodynamics at the Quantum-Classical Boundary: A Self-Consistent Framework Based on Adiabatic-Response Theory.

Emergence of subharmonics in a microwave driven dissipative Rydberg gas (2024)
Journal Article
Liu, Z.-K., Sun, K.-H., Cabot, A., Carollo, F., Zhang, J., Zhang, Z.-Y., Zhang, L.-H., Liu, B., Han, T.-Y., Li, Q., Ma, Y., Chen, H.-C., Lesanovsky, I., Ding, D.-S., & Shi, B.-S. (2024). Emergence of subharmonics in a microwave driven dissipative Rydberg gas. Physical Review Research, 6(3), Article L032069. https://doi.org/10.1103/physrevresearch.6.l032069

Quantum many-body systems near phase transitions respond collectively to externally applied perturbations. We explore this phenomenon in a laser-driven dissipative Rydberg gas that is tuned to a bistable regime. Here two metastable phases coexist, wh... Read More about Emergence of subharmonics in a microwave driven dissipative Rydberg gas.

Avalanche Terahertz Photon Detection in a Rydberg Tweezer Array (2024)
Journal Article
Nill, C., Cabot, A., Trautmann, A., Groß, C., & Lesanovsky, I. (2024). Avalanche Terahertz Photon Detection in a Rydberg Tweezer Array. Physical Review Letters, 133(7), Article 073603. https://doi.org/10.1103/physrevlett.133.073603

We propose a protocol for the amplified detection of low-intensity terahertz radiation using Rydberg tweezer arrays. The protocol offers single photon sensitivity together with a low dark count rate. It is split into two phases: during a sensing phas... Read More about Avalanche Terahertz Photon Detection in a Rydberg Tweezer Array.

Large Deviation Full Counting Statistics in Adiabatic Open Quantum Dynamics (2024)
Journal Article
Paulino, P. J., Lesanovsky, I., & Carollo, F. (2024). Large Deviation Full Counting Statistics in Adiabatic Open Quantum Dynamics. Physical Review Letters, 132(26), Article 260402. https://doi.org/10.1103/PhysRevLett.132.260402

The state of an open quantum system undergoing an adiabatic process evolves by following the instantaneous stationary state of its time-dependent generator. This observation allows one to characterize, for a generic adiabatic evolution, the average d... Read More about Large Deviation Full Counting Statistics in Adiabatic Open Quantum Dynamics.

Large-scale universality in quantum reaction-diffusion from Keldysh field theory (2024)
Journal Article
Gerbino, F., Lesanovsky, I., & Perfetto, G. (2024). Large-scale universality in quantum reaction-diffusion from Keldysh field theory. Physical Review B, 109(22), Article L220304. https://doi.org/10.1103/physrevb.109.l220304

We consider the quantum reaction-diffusion dynamics in d spatial dimensions of a Fermi gas subject to binary annihilation reactions A+A→∅. These systems display collective nonequilibrium long-time behavior, which is signalled by an algebraic decay of... Read More about Large-scale universality in quantum reaction-diffusion from Keldysh field theory.

Tripartite quantum Rabi model with trapped Rydberg ions (2024)
Journal Article
Hamlyn, T. J., Zhang, C., Lesanovsky, I., & Li, W. (2024). Tripartite quantum Rabi model with trapped Rydberg ions. Physical Review Research, 6(2), Article 023223. https://doi.org/10.1103/PhysRevResearch.6.023223

We investigate a tripartite quantum Rabi model (TQRM) wherein a bosonic mode concurrently couples to two spin-1/2 particles through a spin-spin interaction, resulting in a spin-spin-boson coupling - a departure from conventional quantum Rabi models f... Read More about Tripartite quantum Rabi model with trapped Rydberg ions.

Spectral Signatures of Vibronic Coupling in Trapped Cold Ionic Rydberg Systems (2024)
Journal Article
Wilkinson, J. W., Li, W., & Lesanovsky, I. (2024). Spectral Signatures of Vibronic Coupling in Trapped Cold Ionic Rydberg Systems. Physical Review Letters, 132(22), Article 223401. https://doi.org/10.1103/physrevlett.132.223401

Atoms and ions confined with electric and optical fields form the basis of many current quantum simulation and computing platforms. When excited to high-lying Rydberg states, long-ranged dipole interactions emerge which strongly couple the electronic... Read More about Spectral Signatures of Vibronic Coupling in Trapped Cold Ionic Rydberg Systems.

Quantum thermodynamics of boundary time-crystals (2024)
Journal Article
Carollo, F., Lesanovsky, I., Antezza, M., & De Chiara, G. (2024). Quantum thermodynamics of boundary time-crystals. Quantum Science and Technology, 9(3), Article 035024. https://doi.org/10.1088/2058-9565/ad3f42

Time-translation symmetry breaking is a mechanism for the emergence of non-stationary many-body phases, so-called time-crystals, in Markovian open quantum systems. Dynamical aspects of time-crystals have been extensively explored over the recent year... Read More about Quantum thermodynamics of boundary time-crystals.

Inferring interpretable dynamical generators of local quantum observables from projective measurements through machine learning (2024)
Journal Article
Cemin, G., Carnazza, F., Andergassen, S., Martius, G., Carollo, F., & Lesanovsky, I. (2024). Inferring interpretable dynamical generators of local quantum observables from projective measurements through machine learning. Physical Review Applied, 21(4), Article L041001. https://doi.org/10.1103/physrevapplied.21.l041001

To characterize the dynamical behavior of many-body quantum systems, one is usually interested in the evolution of so-called order parameters rather than in characterizing the full quantum state. In many situations, these quantities coincide with the... Read More about Inferring interpretable dynamical generators of local quantum observables from projective measurements through machine learning.