Article
Optics
Qingmei Hu, Junhua Dong, Jianbo Yin, Bingsuo Zou, Yongyou Zhang
Summary: The study examines the scattering and correlation properties of a two-photon pulse in a four-terminal waveguide system where two one-dimensional waveguides are connected by a Jaynes-Cummings emitter (ICE). It is found that when the width of the incident two-photon Gaussian pulse is much larger than the photon wavelength, the transmission spectra approach that of single photon cases. However, when the pulse width is comparable to the photon wavelength, both transmission and correlation show strong dependence on the pulse width. Resonant scattering and photon interference play significant roles in determining the two-photon correlation in the system.
Article
Physics, Multidisciplinary
L. Pereira, J. J. Garcia-Ripoll, And T. Ramos
Summary: We introduce a self-consistent tomography method for arbitrary quantum nondemolition detectors, which allows for a complete physical characterization of the detector and quantification of measurement fidelity, ideality, and backaction. This framework serves as a diagnostic tool for understanding the dynamics of QND detectors, enabling error identification and improvement of calibration and design.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Zhiyuan Ye, Hai-Bo Wang, Jun Xiong, Kaige Wang
Summary: Since the discovery of the photon bunching effect in a thermal light source by Hanbury Brown and Twiss in 1956, studies in correlation optics have primarily focused on intensity fluctuations while neglecting the polarization fluctuations of natural light. In this work, a new light source model called pseudo-natural light is proposed to uncover the veil of polarization fluctuation and its corresponding photon correlations. Surprisingly, this new source exhibits both strong antibunching and superbunching effects, with the second-order correlation coefficient g((2)) continuously modulated across 1. The proposed model opens up new possibilities for quantum imaging applications through the combination of antibunching and bunching effects.
PHOTONICS RESEARCH
(2022)
Article
Physics, Multidisciplinary
P. Steindl, H. Snijders, G. Westra, E. Hissink, K. Iakovlev, S. Polla, J. A. Frey, J. Norman, A. C. Gossard, J. E. Bowers, D. Bouwmeester, W. Loffler
Summary: By manipulating a random continuous single-photon stream using quantum interference, engineered quantum states of light with tunable photon statistics, including photon quantum entanglement, are created. These artificial light states, more complex than coherent states, serve as resources for multiphoton entanglement.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Ernesto P. Raposo, Ivan R. R. Gonzalez, Edwin D. Coronel, Antonio M. S. Macedo, Leonardo de S. Menezes, Raman Kashyap, Anderson S. L. Gomes, Robin Kaiser
Summary: The study proposes an approach based on random matrix theory to calculate the temporal second-order intensity correlation function of radiation emitted by random lasers, finding excellent agreement with experimental data and discussing the extension of the method to address the statistical properties of general disordered photonic systems.
Article
Physics, Multidisciplinary
S. Koehnke, E. Agudelo, M. Schuenemann, O. Schlettwein, W. Vogel, J. Sperling, B. Hage
Summary: A form of quantum correlation is experimentally demonstrated to exist even in the absence of entanglement and discord, certified through negativities in the regularized two-mode Glauber-Sudarshan function. The quantumness of this state is shown to be robust against dephasing, requiring fewer experimental resources for stability and capable of activating multimode entanglement. This research implements a robust kind of nonclassical photon-photon correlated state with potential applications in quantum information processing.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Inna Kviatkovsky, Helen M. Chrzanowski, Sven Ramelow
Summary: Quantum imaging with undetected photons (QIUP) is a powerful imaging tool that utilizes the spatial entanglement of photon pairs to achieve high-resolution imaging. By exploiting the tight position correlations formed within photon pairs at birth, imaging in challenging spectral regions becomes possible. This technique has significant potential for applications in life sciences and industrial imaging.
Article
Optics
Lucas B. A. Melo, Daniel Felinto, Marcio H. G. De Miranda
Summary: This article theoretically analyzes how to improve two-photon cascaded absorption in atomic ensembles by combining a genetic algorithm and spatial light modulator, and examines the impact of different configurations and parameters in the optimized phase mask. The study finds that in certain conditions, the absorption of two photons from different pulses can be significantly enhanced.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Tim Schroeder, Sebastian Bange, Jakob Schedlbauer, Florian Steiner, John M. Lupton, Philip Tinnefeld, Jan Vogelsang
Summary: The study shows that photon antibunching is affected by independent and collective chromophore blinking, requiring universal guidelines for correct interpretation. By using DNA-origami nanostructures to design multichromophoric model systems, it is possible to distinguish between different blinking mechanisms.
Article
Optics
Shuai Li, Bethany Jochim, Jacob Stamm, Dian Peng, Hua-Chieh Shao, Jean Marcel Ngoko Djiokap, Marcos Dantus
Summary: This research combines experimental and theoretical efforts to investigate the influence of shaped laser pulses on tunnel ionization. Both experimental results and theoretical calculations show that precise knowledge of field parameters in the time and frequency domains is crucial for reproducible results and quantitative comparisons between theory and experiment.
Article
Physics, Multidisciplinary
H. Ollivier, S. E. Thomas, S. C. Wein, I. Maillette de Buy Wenniger, N. Coste, J. C. Loredo, N. Somaschi, A. Harouri, A. Lemaitre, I Sagnes, L. Lanco, C. Simon, C. Anton, O. Krebs, P. Senellart
Summary: The study delves into how unwanted multiphoton components of single-photon sources affect the Hong-Ou-Mandel interference visibility. It is found that the overlap between single photons and noise photons significantly impacts the interference. By applying the approach to quantum dot single-photon sources, the mean wave packet overlap of the single-photon component can be accessed, providing a consistent platform to diagnose limitations in current single-photon sources.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Xingbing Chao, Yuan Gao, Jianping Ding, Hui-Tian Wang
Summary: This study presents a statistical optics approach to analyzing the formation of cross-correlation image in self-interference digital holography, showing that the spatial coherence of illumination light can greatly influence the imaging characteristics of SIDH, with the extent of impact depending substantially on the recording distance of hologram. The theoretical conclusions are well supported by numerical simulation and optical experiments.
Review
Physics, Multidisciplinary
K. Laiho, T. Dirmeier, M. Schmidt, S. Reitzenstein, C. Marquardt
Summary: Normalized correlation functions are useful for determining the photon-number properties of light and can be utilized for state classification and characterization. Measurement of normalized higher-order moments is often loss-independent, making it experimentally appealing with lossy optical setups and imperfect detectors.
Article
Multidisciplinary Sciences
Deshui Yu, Frank Vollmer
Summary: The proposed micro laser scheme utilizes a whispering-gallery-mode to achieve coupling between a microsphere and ultracold alkaline-earth metal atoms, reducing significantly the saturation photon and critical atom numbers. This has the potential for microscale active optical clocks in precision measurement and frequency metrology.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Agnes George, Andrew Bruhacs, A. Aadhi, William E. Hayenga, Rachel Ostic, Erin Whitby, Michael Kues, Zhiming M. Wang, Christian Reimer, Mercedeh Khajavikhan, Roberto Morandotti
Summary: This paper presents a new method to investigate the temporal dynamics of photon statistics associated with nanolaser emission without the need for spectral filtering. By optically pumping the nanolasers with nanosecond pulses, coherence transitions from thermal emission to lasing are observed in the gathered time-resolved photon statistics.
LASER & PHOTONICS REVIEWS
(2021)
Article
Physics, Multidisciplinary
Venkata Vikram Orre, Elizabeth A. Goldschmidt, Abhinav Deshpande, Alexey V. Gorshkov, Vincenzo Tamma, Mohammad Hafezi, Sunil Mittal
PHYSICAL REVIEW LETTERS
(2019)
Article
Computer Science, Theory & Methods
Dario Gatto, Paolo Facchi, Vincenzo Tamma
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
(2020)
Article
Physics, Multidisciplinary
Giovanni Gramegna, Danilo Triggiani, Paolo Facchi, Frank A. Narducci, Vincenzo Tamma
Summary: This method achieves Heisenberg scaling precision without iterative adaptation of interferometer hardware, using a simple squeezed light source and homodyne measurements. No constraint on possible parameter values is necessary, only a preliminary shot-noise estimation is required for Heisenberg-limited precision monitoring of parameter variations.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Multidisciplinary
Danilo Triggiani, Paolo Facchi, Vincenzo Tamma
Summary: In this study, we propose a protocol that achieves the ultimate Heisenberg-scaling sensitivity in parameter estimation in a generic linear network, without the need for any prior information. The protocol utilizes a single-mode squeezed state and homodyne detectors in each output channel, making it suitable for experimental applications.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Review
Chemistry, Analytical
Danilo Triggiani, Vincenzo Tamma
Summary: Quantum sensing and quantum metrology propose schemes for precise estimation of physical properties beyond classical strategies. This work reviews two feasible estimation schemes that address the challenges of practical applications, such as the use of fragile probes, adaptive optimization, and limited working range. These schemes utilize easily realizable resources and achieve the desired quantum enhancement of precision.
Article
Physics, Multidisciplinary
Francesco V. Pepe, Giovanni Scala, Gabriele Chilleri, Danilo Triggiani, Yoon-Ho Kim, Vincenzo Tamma
Summary: We demonstrate the distance sensitivity of thermal light second-order interference beyond spatial coherence. This kind of interference is closely related to the degree of correlation of the measured interference pattern and can preserve sensitivity to distances even in the presence of turbulence.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Review
Optics
Danilo Triggiani, Paolo Facchi, Vincenzo Tamma
Summary: The optimization of passive and linear networks in quantum metrology plays a crucial role in achieving ultimate Heisenberg-scaling sensitivity. By adding degrees of freedom through auxiliary stages, the probe can be optimized before or after interferometric evolution, and the choice of these stages determines the potential for quantum enhancement. Additional degrees of freedom have minimal impact on precision after quantum enhancement optimization, allowing manipulation of network structure information encoding.
Article
Physics, Multidisciplinary
Vincenzo Tamma, Simon Laibacher
Summary: Multiphoton interference is an essential phenomenon in quantum optics and quantum information processing, especially in boson sampling experiments. However, generating a large number of photons with fixed spectral properties from one experimental run to another is challenging. This study introduces a random multiplexing technique to enhance the success rate of generating samples and overcome the drawbacks of standard multiplexing. The results shed new light on the computational complexity of multiboson interference and improve the scalability of boson sampling schemes.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Applied
Danilo Triggiani, Giorgos Psaroudis, Vincenzo Tamma
Summary: We achieve the highest sensitivity allowed by quantum physics in estimating the time delay between two photons by observing their interference at a beam splitter through frequency-resolving sampling measurements. This sensitivity can be greatly enhanced even when traditional two-photon interferometers fail, by reducing the photonic temporal bandwidth, without the need for altering the path of the reference photon or using high-resolution time-resolving detectors. Potential applications include imaging nanostructures, including biological samples, and using frequency-resolved boson sampling in optical networks for enhanced estimation based on quantum principles.
PHYSICAL REVIEW APPLIED
(2023)
Proceedings Paper
Instruments & Instrumentation
Danilo Triggiani, Vincenzo Tamma
Summary: In this study, we present an estimation scheme that achieves Heisenberg-scaling sensitivity in estimating the average of optical phases in a Mach-Zehnder interferometer. This scheme utilizes a single squeezed vacuum state and homodyne detection at a single output port. We demonstrate that, to achieve this quantum advantage, only classical prior knowledge about the two phases is required, which can be obtained with a classical estimation strategy limited by shot-noise precision.
OPTICAL AND QUANTUM SENSING AND PRECISION METROLOGY II
(2022)
Article
Optics
Dario Gatto, Paolo Facchi, Vincenzo Tamma
Summary: This paper introduces a quantum metrological protocol based on a Mach-Zehnder interferometer, utilizing squeezed vacuum input state and antisqueezing operation to enhance sensitivity in detection. The protocol is robust to detector inefficiencies and photon losses occurring before the antisqueezing operation.
Article
Optics
Danilo Triggiani, Paolo Facchi, Vincenzo Tamma
Summary: The study proposes a metrological strategy for achieving Heisenberg-scaling precision in estimating functions of any fixed number of parameters. This scheme utilizes single-mode squeezed vacuum and homodyne detection, with two auxiliary linear networks playing a key role in refocusing the signal and fixing the function of the parameters to be estimated. The precision required for the prior measurement is shown to be achievable through classic measurement techniques.
Article
Optics
Vincenzo Tamma, Simon Laibacher
Summary: In traditional boson-sampling experiments, the probability of success decreases rapidly with the number of input photons, but in the new scheme, the probability of success increases with the number of input photons, eventually approaching unity. By sampling measurements of all possible numbers of photons at each input port, the new scheme takes a different approach and offers an exciting path towards demonstrating quantum computational supremacy in the future, using scalable experimental resources.
Article
Physics, Multidisciplinary
Giovanni Gramegna, Danilo Triggiani, Paolo Facchi, Frank A. Narducci, Vincenzo Tamma
Summary: The study introduces a measurement setup that achieves Heisenberg scaling precision for estimating the distributed parameter phi. The proposed scheme is easily implemented with Gaussian states and measurements, requiring adaptation of only one stage to achieve the desired precision. The study shows that the choice of the nonadapted stage affects a prefactor value multiplying the Heisenberg scaling precision, but can be controlled through the encoding of parameter phi into the linear network.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Dario Gatto, Paolo Facchi, Frank A. Narducci, Vincenzo Tamma
PHYSICAL REVIEW RESEARCH
(2019)
