Marco Polini
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Marco Polini has a total of 121 co-authors. Here are the top co-authors by number of shared publications:
- Andrea Tomadin
Università di Pisa
6 shared publications - Frank H. L. Koppens
ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels (Barcelona), Spain
5 shared publications - Iacopo Torre
ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels (Barcelona), Spain
5 shared publications - Guido Menichetti
Università di Pisa
4 shared publications - Roberto Menta
Scuola Normale Superiore
4 shared publications - Francesco Cioni
NEST, Scuola Normale Superiore
3 shared publications
Latest Publications
- Open Access
- 26 January 2026
- Published by American Physical Society (APS) in Physical Review A
- Vol. 113 (1)
Conveyor-belt superconducting quantum computer
The processing unit of a solid-state quantum computer consists of an array of coupled qubits, each driven with on-chip microwave lines that route control signals to the qubits in order to perform logical operations. This approach to quantum computing comes with two major problems. On the one hand, it greatly hampers scalability towards fault-tolerant quantum computers, which are estimated to need a number of qubits—and therefore driving lines—on the order of 10 6 . On the other hand, these lines are a source of electromagnetic noise, exacerbating frequency crowding and crosstalk, while also contributing to power dissipation inside the dilution fridge. We here tackle these two challenges by presenting a quantum processing unit (QPU) for a universal quantum computer which is (rather than ) driven. Our QPU relies on a closed loop of superconducting qubits with always-on ZZ interactions which we dub the “conveyor belt.” Notably, this architecture requires only O ( N ) physical qubits to run a computation on N computational qubits, in contrast to previous O ( N 2 ) proposals for global quantum computation. Universality is achieved via the implementation of single-qubit gates and a Toffoli gate. The ability to perform multiqubit operations in a single step could vastly improve the fidelity and execution time of many algorithms.
- 26 January 2026
- Published by American Physical Society (APS) in Physical Review A
- Vol. 113 (1)
Open AccessConveyor-belt superconducting quantum computer
The processing unit of a solid-state quantum computer consists of an array of coupled qubits, each driven with on-chip microwave lines that route control signals to the qubits in order to perform logical operations. This approach to quantum computing comes with two major problems. On the one hand, it greatly hampers scalability towards fault-tolerant quantum computers, which are estimated to need a number of qubits—and therefore driving lines—on the order of 10 6 . On the other hand, these lines are a source of electromagnetic noise, exacerbating frequency crowding and crosstalk, while also contributing to power dissipation inside the dilution fridge. We here tackle these two challenges by presenting a quantum processing unit (QPU) for a universal quantum computer which is (rather than ) driven. Our QPU relies on a closed loop of superconducting qubits with always-on ZZ interactions which we dub the “conveyor belt.” Notably, this architecture requires only O ( N ) physical qubits to run a computation on N computational qubits, in contrast to previous O ( N 2 ) proposals for global quantum computation. Universality is achieved via the implementation of single-qubit gates and a Toffoli gate. The ability to perform multiqubit operations in a single step could vastly improve the fidelity and execution time of many algorithms.
- 20 January 2026
- Published by American Physical Society (APS) in Physical Review A
- Vol. 113 (1)
Overcoming disorder in superconducting globally driven quantum computing
- 20 January 2026
- Published by American Physical Society (APS) in Physical Review A
- Vol. 113 (1)
Overcoming disorder in superconducting globally driven quantum computing
- 16 January 2026
- Published by American Physical Society (APS) in Physical Review A
- Vol. 113 (1)
Building globally controlled quantum processors with Z Z interactions
- 16 January 2026
- Published by American Physical Society (APS) in Physical Review A
- Vol. 113 (1)
Building globally controlled quantum processors with Z Z interactions
- 23 December 2025
- Published by American Physical Society (APS) in Physical Review B
- Vol. 112 (22)
Ultrafast dynamics of quantum matter driven by time-energy entangled photons
- 23 December 2025
- Published by American Physical Society (APS) in Physical Review B
- Vol. 112 (22)
Ultrafast dynamics of quantum matter driven by time-energy entangled photons
- 10 December 2025
- Published by American Physical Society (APS) in Physical Review B
- Vol. 112 (24)
Phonon spectra, quantum geometry, and the Goldstone theorem
- 10 December 2025
- Published by American Physical Society (APS) in Physical Review B
- Vol. 112 (24)
Phonon spectra, quantum geometry, and the Goldstone theorem
- Open Access
- 10 November 2025
- Published by American Physical Society (APS) in Physical Review D
- Vol. 112 (9) , 092005
Direct dark matter searches with metal halide perovskites
Polar materials with optical phonons in the meV range are excellent candidates for both dark matter direct detection via dark photon-mediated scattering and light dark matter absorption. In this study, we propose, for the first time, the metal halide perovskites ${\mathrm{MAPbI}}_{3}$, ${\mathrm{MAPbCl}}_{3}$, and ${\mathrm{CsPbI}}_{3}$ for these purposes. Our findings reveal that ${\mathrm{CsPbI}}_{3}$ is the best material, significantly improving exclusion limits compared to other polar materials. For scattering, ${\mathrm{CsPbI}}_{3}$ can probe dark matter masses down to the keV range. For absorption, it enhances sensitivity to detect dark photon masses below $\ensuremath{\sim}10\text{ }\text{ }\mathrm{meV}$. The only material that has so far been investigated and that could provide competitive bounds is CsI, which, however, demonstrates lower stability as device platform compared to ${\mathrm{CsPbI}}_{3}$. Moreover, CsI is isotropic while the anisotropic structure of ${\mathrm{CsPbI}}_{3}$ enables daily modulation analysis, showing that a significant percentage of daily modulation exceeding 1% is achievable for dark matter masses below 40 keV.- 10 November 2025
- Published by American Physical Society (APS) in Physical Review D
- Vol. 112 (9) , 092005
Open AccessDirect dark matter searches with metal halide perovskites
Polar materials with optical phonons in the meV range are excellent candidates for both dark matter direct detection via dark photon-mediated scattering and light dark matter absorption. In this study, we propose, for the first time, the metal halide perovskites ${\mathrm{MAPbI}}_{3}$, ${\mathrm{MAPbCl}}_{3}$, and ${\mathrm{CsPbI}}_{3}$ for these purposes. Our findings reveal that ${\mathrm{CsPbI}}_{3}$ is the best material, significantly improving exclusion limits compared to other polar materials. For scattering, ${\mathrm{CsPbI}}_{3}$ can probe dark matter masses down to the keV range. For absorption, it enhances sensitivity to detect dark photon masses below $\ensuremath{\sim}10\text{ }\text{ }\mathrm{meV}$. The only material that has so far been investigated and that could provide competitive bounds is CsI, which, however, demonstrates lower stability as device platform compared to ${\mathrm{CsPbI}}_{3}$. Moreover, CsI is isotropic while the anisotropic structure of ${\mathrm{CsPbI}}_{3}$ enables daily modulation analysis, showing that a significant percentage of daily modulation exceeding 1% is achievable for dark matter masses below 40 keV. - Open Access
- 12 March 2025
- Published by American Physical Society (APS) in Physical Review Research
- Vol. 7 (1)
Globally driven superconducting quantum computing architecture
We propose a platform for implementing a universal, quantum computer based on a 2D ladder hosting three different species of superconducting qubits. In stark contrast with the existing literature, our scheme exploits the always-on longitudinal ZZ coupling. The latter, combined with specific driving frequencies, enables the reach of a blockade regime, which plays a pivotal role in the computing scheme.
- 12 March 2025
- Published by American Physical Society (APS) in Physical Review Research
- Vol. 7 (1)
Open AccessGlobally driven superconducting quantum computing architecture
We propose a platform for implementing a universal, quantum computer based on a 2D ladder hosting three different species of superconducting qubits. In stark contrast with the existing literature, our scheme exploits the always-on longitudinal ZZ coupling. The latter, combined with specific driving frequencies, enables the reach of a blockade regime, which plays a pivotal role in the computing scheme.
- 20 May 2024
- Published by American Physical Society (APS) in Physical Review B
- Vol. 109 (20) , 205139
Electrical tuning of the magnetic properties of two-dimensional magnets:Motivated by growing interest in atomically thin van der Waals magnetic materials, we present an ab initio theoretical study of the dependence of their magnetic properties on the electron/hole density induced via the electrical field effect. By focusing on the case of monolayer (a prototypical 2D Ising ferromagnet) and employing a hybrid functional, we first study the dependence of the gap and effective mass on the carrier concentration . We then investigate the robustness of magnetism by studying the dependencies of the exchange couplings and magneto crystalline anisotropy energy (MAE) on . In agreement with experimental results, we find that magnetism displays a bipolar electrically-tunable character, which is, however, much more robust for hole () rather than electron () doping. Indeed, the MAE vanishes for an electron density , signaling the failure of a localized description based on a Heisenberg-type anisotropic spin Hamiltonian. This is in agreement with the rapid increase of the coupling between fourth-neighbor atoms with increasing electron density.- 20 May 2024
- Published by American Physical Society (APS) in Physical Review B
- Vol. 109 (20) , 205139
Electrical tuning of the magnetic properties of two-dimensional magnets:Motivated by growing interest in atomically thin van der Waals magnetic materials, we present an ab initio theoretical study of the dependence of their magnetic properties on the electron/hole density induced via the electrical field effect. By focusing on the case of monolayer (a prototypical 2D Ising ferromagnet) and employing a hybrid functional, we first study the dependence of the gap and effective mass on the carrier concentration . We then investigate the robustness of magnetism by studying the dependencies of the exchange couplings and magneto crystalline anisotropy energy (MAE) on . In agreement with experimental results, we find that magnetism displays a bipolar electrically-tunable character, which is, however, much more robust for hole () rather than electron () doping. Indeed, the MAE vanishes for an electron density , signaling the failure of a localized description based on a Heisenberg-type anisotropic spin Hamiltonian. This is in agreement with the rapid increase of the coupling between fourth-neighbor atoms with increasing electron density.- Open Access
- 19 March 2024
- Published by American Physical Society (APS) in Physical Review B
- Vol. 109 (10) , 104513
Amperean superconductivity cannot be induced by deep subwavelength cavities in a two-dimensional material
Amperean superconductivity is an exotic phenomenon stemming from attractive effective electron-electron interactions (EEEIs) mediated by a transverse gauge field. Originally introduced in the context of quantum spin liquids and high- superconductors, Amperean superconductivity has been recently proposed to occur at temperatures on the order of in two-dimensional, parabolic-band, electron gases embedded inside deep subwavelength optical cavities. In this work, we first generalize the microscopic theory of cavity-induced Amperean superconductivity to the case of graphene and then argue that this superconducting state cannot be achieved in the deep subwavelength regime. In the latter regime, indeed, a cavity induces only EEEIs between density fluctuations rather than the current-current interactions which are responsible for Amperean pairing.- 19 March 2024
- Published by American Physical Society (APS) in Physical Review B
- Vol. 109 (10) , 104513
Open AccessAmperean superconductivity cannot be induced by deep subwavelength cavities in a two-dimensional material
Amperean superconductivity is an exotic phenomenon stemming from attractive effective electron-electron interactions (EEEIs) mediated by a transverse gauge field. Originally introduced in the context of quantum spin liquids and high- superconductors, Amperean superconductivity has been recently proposed to occur at temperatures on the order of in two-dimensional, parabolic-band, electron gases embedded inside deep subwavelength optical cavities. In this work, we first generalize the microscopic theory of cavity-induced Amperean superconductivity to the case of graphene and then argue that this superconducting state cannot be achieved in the deep subwavelength regime. In the latter regime, indeed, a cavity induces only EEEIs between density fluctuations rather than the current-current interactions which are responsible for Amperean pairing. - Open Access
Plasmon-magnon interactions in two-dimensional honeycomb magnets
Two-dimensional honeycomb ferromagnets offer the unprecedented opportunity to study interactions between collective modes that in standard bulk ferromagnets do not cross paths. Indeed, they harbor an optical spin-wave branch, i.e. a spin wave which disperses weakly near the Brillouin zone center. When doped with free carriers, they also host the typical gapless plasmonic mode of 2D itinerant electron/hole systems. When the plasmon branch meets the optical spin-wave branch, energy and momentum matching occurs, paving the way for interactions between the charge and spin sector. In this Letter we present a microscopic theory of such plasmon-magnon interactions, which is based on a double random phase approximation. We comment on the possibility to unveil this physics in recently isolated 2D honeycomb magnets such as ${\rm Cr}_2{\rm Ge}_2{\rm Te}_6$.Open AccessPlasmon-magnon interactions in two-dimensional honeycomb magnets
Two-dimensional honeycomb ferromagnets offer the unprecedented opportunity to study interactions between collective modes that in standard bulk ferromagnets do not cross paths. Indeed, they harbor an optical spin-wave branch, i.e. a spin wave which disperses weakly near the Brillouin zone center. When doped with free carriers, they also host the typical gapless plasmonic mode of 2D itinerant electron/hole systems. When the plasmon branch meets the optical spin-wave branch, energy and momentum matching occurs, paving the way for interactions between the charge and spin sector. In this Letter we present a microscopic theory of such plasmon-magnon interactions, which is based on a double random phase approximation. We comment on the possibility to unveil this physics in recently isolated 2D honeycomb magnets such as ${\rm Cr}_2{\rm Ge}_2{\rm Te}_6$.