Franco Nori
University of Michigan
H-index: 135
North America-United States
Description
Franco Nori, With an exceptional h-index of 135 and a recent h-index of 97 (since 2020), a distinguished researcher at University of Michigan, specializes in the field of quantum optics, quantum information, superconductivity, circuit QED, condensed matter physics.
His recent articles reflect a diverse array of research interests and contributions to the field:
Long-Range Four-body Interactions in Structured Nonlinear Photonic Waveguides
Water-wave vortices and skyrmions
Fast quantum logic gates using nonadiabatic Landau-Zener-Stückelberg-Majorana transitions
Exponentially Improved Dispersive Qubit Readout with Squeezed Light
Quantum Weak Force Sensing with Squeezed Magnomechanics
Reconciling quantum and classical spectral theories of ultrastrong coupling: Role of cavity bath coupling and gauge corrections
Nonlinear chiral quantum optics with giant-emitter pairs
Sudden change of the photon output field marks phase transitions in the quantum Rabi model
Professor Information
University | University of Michigan |
---|---|
Position | Chief Scientist at RIKEN. Also at the . |
Citations(all) | 91221 |
Citations(since 2020) | 47197 |
Cited By | 63837 |
hIndex(all) | 135 |
hIndex(since 2020) | 97 |
i10Index(all) | 751 |
i10Index(since 2020) | 551 |
University Profile Page | University of Michigan |
Research & Interests List
quantum optics
quantum information
superconductivity
circuit QED
condensed matter physics
Top articles of Franco Nori
Long-Range Four-body Interactions in Structured Nonlinear Photonic Waveguides
Multi-photon dynamics beyond linear optical materials are of significant fundamental and technological importance in quantum information processing. However, it remains largely unexplored in nonlinear waveguide QED. In this work, we theoretically propose a structured nonlinear waveguide in the presence of staggered photon-photon interactions, which supports two branches of gaped bands for doublons (i.e., spatially bound-photon-pair states). In contrast to linear waveguide QED systems, we identify two important contributions to its dynamical evolution, i.e., single-photon bound states (SPBSs) and doublon bound states (DBSs). Most remarkably, the nonlinear waveguide can mediate the long-range four-body interactions between two emitter pairs, even in the presence of disturbance from SPBS. By appropriately designing system's parameters, we can achieve high-fidelity four-body Rabi oscillations mediated only by virtual doublons in DBSs. Our findings pave the way for applying structured nonlinear waveguide QED in multi-body quantum information processing and quantum simulations among remote sites.
Authors
Xin Wang,Jia-Qi Li,Tao Liu,Adam Miranowicz,Franco Nori
Journal
arXiv preprint arXiv:2401.02714
Published Date
2024/1/5
Water-wave vortices and skyrmions
Topological wave structures—phase vortices, skyrmions, merons, etc.—are attracting enormous attention in a variety of quantum and classical wave fields. Surprisingly, these structures have never been properly explored in the most obvious example of classical waves: water-surface (gravity-capillary) waves. Here, we fill this gap and describe (i) water-wave vortices of different orders carrying quantized angular momentum with orbital and spin contributions,(ii) skyrmion lattices formed by the instantaneous displacements of the water-surface particles in wave interference, and (iii) meron (half-skyrmion) lattices formed by the spin-density vectors, as well as (iv) spatiotemporal water-wave vortices and skyrmions. We show that all these topological entities can be readily generated in linear water-wave interference experiments. Our findings can find applications in microfluidics and show that water waves can be …
Authors
Daria A Smirnova,Franco Nori,Konstantin Y Bliokh
Journal
Physical Review Letters
Published Date
2024/1/31
Fast quantum logic gates using nonadiabatic Landau-Zener-Stückelberg-Majorana transitions
A conventional realization of quantum logic gates and control is based on resonant driving, which causes periodic resonant Rabi oscillations of the occupation probability of the quantum system. We study an alternative paradigm for implementing quantum logic gates based on Landau-Zener-Stückelberg-Majorana (LZSM) interferometry with non-resonant driving and the alternation of adiabatic evolution and non-adiabatic transitions. Compared to the Rabi oscillations method, the main differences are a non-resonant frequency, large amplitude, and a small number of periods in the external driving.We explore the dynamics of a multilevel quantum system under LZSM drives, demonstrate the implementation of single-qubit X, Y, H, and two-qubit iSWAP, CNOT gates, explore optimization of the parameters for increasing the gate speed and fidelity, and compare the theoretical error rates between the conventional Rabi …
Authors
Artem Ryzhov,Oleh Ivakhnenko,Sergey Shevchenko,Miguel Fernando Gonzalez-Zalba,Franco Nori
Journal
Bulletin of the American Physical Society
Published Date
2024/3/5
Exponentially Improved Dispersive Qubit Readout with Squeezed Light
It has been a long-standing goal to improve dispersive qubit readout with squeezed light. However, injected external squeezing (IES) {\it cannot} enable a practically interesting increase in the signal-to-noise ratio (SNR), and simultaneously, the increase of the SNR due to the use of intracavity squeezing (ICS) is even {\it negligible}. Here, we {\it counterintuitively} demonstrate that using IES and ICS together can lead to an {\it exponential} improvement of the SNR for any measurement time, corresponding to a measurement error reduced typically by many orders of magnitude. More remarkably, we find that in a short-time measurement, the SNR is even improved exponentially with {\it twice} the squeezing parameter. As a result, we predict a fast and high-fidelity readout. This work offers a promising path toward exploring squeezed light for dispersive qubit readout, with immediate applications in quantum error correction and fault-tolerant quantum computation.
Authors
Wei Qin,Adam Miranowicz,Franco Nori
Journal
arXiv preprint arXiv:2402.12044
Published Date
2024/2/19
Quantum Weak Force Sensing with Squeezed Magnomechanics
Cavity magnomechanics, exhibiting remarkable experimental tunability, rich magnonic nonlinearities, and compatibility with various quantum systems, has witnessed considerable advances in recent years. However, the potential benefits of using cavity magnomechanical (CMM) systems in further improving the performance of quantum-enhanced sensing for weak forces remain largely unexplored. Here we show that the performance of a quantum CMM sensor can be significantly enhanced beyond the standard quantum limit (SQL), by squeezing the magnons. We find that, for comparable parameters, two orders of enhancement in force sensitivity can be achieved in comparison with the case without the magnon squeezing. Moreover, we show optimal parameter regimes of homodyne angle for minimizing added quantum noise. Our findings provide a promising approach for highly tunable and compatible quantum force sensing using hybrid CMM devices, with potential applications ranging from quantum precision measurements to quantum information processing.
Authors
Qian Zhang,Jie Wang,Tian-Xiang Lu,Franco Nori,Hui Jing
Journal
arXiv preprint arXiv:2404.00723
Published Date
2024/3/31
Reconciling quantum and classical spectral theories of ultrastrong coupling: Role of cavity bath coupling and gauge corrections
Focusing on the widely adopted Hopfield model with cavity dissipation, we show how the linear spectrum of an ultrastrongly coupled cavity and a dipole can be described either classically or quantum mechanically, but only when the quantum model includes (i) corrections to maintain gauge invariance, and (ii) a specific type of cavity bath coupling. We also show the impact of this bath model on the quantum Rabi model, which has no classical analogue in ultrastrong coupling.
Authors
Stephen Hughes,Chris Gustin,Franco Nori
Journal
arXiv preprint arXiv:2309.15788
Published Date
2023/9/27
Nonlinear chiral quantum optics with giant-emitter pairs
We propose a setup which combines giant emitters (coupling to light at multiple points separated by wavelength distances) with nonlinear quantum optics and its correlated photons. In this setup, we reveal a mechanism for multiphoton chiral emission: the propagation phase of the center of mass of two strongly correlated photons (a doublon), and the phases encoded in the coupling points of two giant emitters, can yield completely destructive interference in one propagation direction while supporting emission in the other direction. The degree of chirality can be tuned by the phases of the couplings. We show that the proposed setup can provide directional quantum many-body resources, and can be configured as a building block for a chiral quantum network with ``correlated flying qubits'', enabling distinct applications beyond linear chiral setups. Our findings point toward a rich landscape of tailoring multiphoton propagation and correlation properties by exploiting interference effects of giant emitters coupling to nonlinear photonic baths.
Authors
Xin Wang,Jia-Qi Li,Zhihai Wang,Anton Frisk Kockum,Lei Du,Tao Liu,Franco Nori
Journal
arXiv preprint arXiv:2404.09829
Published Date
2024/4/15
Sudden change of the photon output field marks phase transitions in the quantum Rabi model
The experimental observation of quantum phase transitions predicted by the quantum Rabi model in quantum critical systems is usually challenging due to the lack of signature experimental observables associated with them. Here, we describe a method to identify the dynamical critical phenomenon in the quantum Rabi model consisting of a three-level atom and a cavity at the quantum phase transition. Such a critical phenomenon manifests itself as a sudden change of steady-state output photons in the system driven by two classical fields, when both the atom and the cavity are initially unexcited. The process occurs as the high-frequency pump field is converted into the low-frequency Stokes field and multiple cavity photons in the normal phase, while this conversion cannot occur in the superradiant phase. The sudden change of steady-state output photons is an experimentally accessible measure to probe …
Authors
Ye-Hong Chen,Yuan Qiu,Adam Miranowicz,Neill Lambert,Wei Qin,Roberto Stassi,Yan Xia,Shi-Biao Zheng,Franco Nori
Journal
Communications Physics
Published Date
2024/1/5
Professor FAQs
What is Franco Nori's h-index at University of Michigan?
The h-index of Franco Nori has been 97 since 2020 and 135 in total.
What are Franco Nori's top articles?
The articles with the titles of
Long-Range Four-body Interactions in Structured Nonlinear Photonic Waveguides
Water-wave vortices and skyrmions
Fast quantum logic gates using nonadiabatic Landau-Zener-Stückelberg-Majorana transitions
Exponentially Improved Dispersive Qubit Readout with Squeezed Light
Quantum Weak Force Sensing with Squeezed Magnomechanics
Reconciling quantum and classical spectral theories of ultrastrong coupling: Role of cavity bath coupling and gauge corrections
Nonlinear chiral quantum optics with giant-emitter pairs
Sudden change of the photon output field marks phase transitions in the quantum Rabi model
...
are the top articles of Franco Nori at University of Michigan.
What are Franco Nori's research interests?
The research interests of Franco Nori are: quantum optics, quantum information, superconductivity, circuit QED, condensed matter physics
What is Franco Nori's total number of citations?
Franco Nori has 91,221 citations in total.
What are the co-authors of Franco Nori?
The co-authors of Franco Nori are Sahin K. Ozdemir, Adam Miranowicz, Jian-Qiang You, Alexandre Zagoskin FAPS, FInstP, FHEA, Sergey E Savel'ev, Prof. of Theor. Physics, Associate Dean Research and Innovation, APS & IOP Fellow, Salvatore Savasta.