Article
Materials Science, Multidisciplinary
Mikhail Kostylev
Summary: In this study, numerical simulations were conducted to investigate the propagation of spin waves in an yttrium-iron garnet film. It was found that the transparency of a potential barrier for magnons, created by an Oersted field of a current, can be electrically controlled to act as a semitransparent mirror. The Hong-Ou-Mandel effect was observed in this configuration.
Review
Physics, Multidisciplinary
Frederic Bouchard, Alicia Sit, Yingwen Zhang, Robert Fickler, Filippo M. Miatto, Yuan Yao, Fabio Sciarrino, Ebrahim Karimi
Summary: Observation of two-particle interference, starting with two-photon interference nearly 30 years ago, has led to a new quantum era with distinct advantages and potential applications. The unique properties of quantum physics can be harnessed for surpassing classical computations, secure communication, simulating complex systems, and increasing measurement sensitivity.
REPORTS ON PROGRESS IN PHYSICS
(2021)
Article
Optics
Bienvenu Ndagano, Hugo Defienne, Dominic Branford, Yash D. Shah, Ashley Lyons, Niclas Westerberg, Erik M. Gauger, Daniele Faccio
Summary: In this study, a full-field, scan-free quantum imaging technique exploiting Hong-Ou-Mandel interference is developed to reconstruct the surface depth profile of transparent samples. The ability to retrieve images with micrometre-scale depth features is demonstrated even with a low photon flux.
Article
Optics
Mayuka Ichihara, Daisuke Yoshida, Feng-Lei Hong, Tomoyuki Horikiri
Summary: This study aims to improve the entanglement generation rate by frequency multiplexing the Bell-state measurements. Three frequency modes are mapped to a temporal mode by an atomic frequency comb, and Hong-Ou-Mandel interference is observed in each frequency mode. The visibility for all the modes was 40%-42%.
Article
Quantum Science & Technology
A. D. Manukhova, A. A. Rakhubovsky, R. Filip
Summary: This experiment proposes a method to test the Hong-Ou-Mandel interference between single phononic excitation and single collective excitation of atoms, and verifies the hybrid bunching effect of different quanta in the output atomic-mechanical state.
Article
Optics
Paul M. Alsing, Richard J. Birrittella, Christopher C. Gerry, Jihane Mimih, Peter L. Knight
Summary: The parity of a nonclassical state of light has a dominant influence on the interference effects at a balanced beam splitter. Odd photon-number input Fock states can generate destructive interference effects, which are extensions of the Hong-Ou-Mandel effect.
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
Optics
Valeria Cimini, Francesco Albarelli, Ilaria Gianani, Marco Barbieri
Summary: In this study, we apply the theory of semiparametric estimation to assess the parameters of interest in a Hong-Ou-Mandel interference experiment involving a spectrally entangled two-photon state. Specifically, we focus on estimating the Hermite-Gauss components of the marginal symmetrized wave function, which are shown to serve as an entanglement witness for the two-photon state.
Article
Optics
Ling Hong, Xiyue Cao, Yuanyuan Chen, Lixiang Chen
Summary: In this study, the Hong-Ou-Mandel interference of spin-orbit hybrid photons is observed for the first time. Various forms of spin-orbit hybrid entangled photons are prepared using tunable q-plates as spin-orbit coupler devices. By harnessing the match degree in the temporal domain, the coalescence and anti-coalescence effects are observed, and the feasibility of quantum-enhanced photon polarization gears is demonstrated.
Article
Optics
Yoshiaki Tsujimoto, Kentaro Wakui, Mikio Fujiwara, Masahide Sasaki, Masahiro Takeoka
Summary: By utilizing a pump laser with a high repetition rate, the study increased the generation rate of single photons and successfully suppressed the creation of higher-order pairs. The research team developed a simple model to consider the effect on spectral purity, and experimentally demonstrated high-visibility interference between two independent HSPs generated by SPDC.
Article
Optics
Olli Siltanen, Tom Kuusela, Jyrki Piilo
Summary: This paper fills the research gap by considering the polarization-frequency interaction in a quantum interferometer, analyzing theoretical aspects such as biphoton polarization states and coincidence probability, and outlining various interesting applications ranging from constructing Bell states to an alternative delayed choice quantum eraser.
Article
Chemistry, Multidisciplinary
Audrey Eshun, Bing Gu, Oleg Varnavski, Shahaf Asban, Konstantin E. Dorfman, Shaul Mukamel, Theodore Goodson
Summary: Entangled photon pairs are utilized for molecular spectroscopy and quantum interferometry, with the experiment showcasing a combination of both techniques to study molecular properties. By utilizing the correlations of entangled photons in an HOM interferometer, the experiment successfully extracts the dephasing time of the coherent response induced by excitation. The measurement method using coincidence counts is unaffected by even-order dispersion effects, providing a more accurate representation of the light-matter interaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Physics, Multidisciplinary
T. Jonckheere, J. Rech, B. Gremaud, T. Martin
Summary: We demonstrate that Hong-Ou-Mandel interferences between excitations created by narrow voltage pulses on the edge states of a low temperature fractional quantum Hall effect (FQHE) system directly reveal the anyonic statistics.
PHYSICAL REVIEW LETTERS
(2023)
Article
Quantum Science & Technology
Sandeep Singh, Vimlesh Kumar, Varun Sharma, Daniele Faccio, G. K. Samanta
Summary: This study demonstrates the generation of photon pairs with flexible spectral bandwidth using a single-frequency continuous-wave diode laser, enabling high-precision, real-time quantum sensing. The photon pairs produced using a specific crystal exhibit sufficient brightness to measure vibrations and optical delay, showcasing their importance in in-field quantum sensing applications.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
Xiaoqin Gao, Yingwen Zhang, Alessio D'Errico, Khabat Heshami, Ebrahim Karimi
Summary: The experimental demonstration of high-speed measurement and characterization of two-photon interference using a time tagging camera opens up possibilities for practical applications in quantum sensing and communication.
Article
Materials Science, Multidisciplinary
Pedro Chamorro-Posada, Roberto C. Dante, Jose Vazquez-Cabo, Denisse G. Dante, Pablo Martin-Ramos, Oscar Rubinos-Lopez, Francisco M. Sanchez-Arevalo
Summary: A polymeric carbon nitride thin film grown by chemical vapor deposition showed a high degree of organization in stacking polymer sheets with strong inter-layer interactions but lacked crystallinity. The material's properties were explained through a comprehensive theoretical study based on semi-empirical quantum chemistry calculations, elucidating fundamental issues regarding the structural conformation of graphitic carbon nitride.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Physical
Roberto C. Dante, Luis Lartundo-Rojas, Pablo Martin-Ramos, Pedro Chamorro-Posada, Dario Rutto, Denisse G. Dante, Jose Vazquez-Cabo, Oscar Rubinos-Lopez
Summary: A carbon nitrogen film was successfully formed using melamine cyanurate as a precursor, showing a layered structure with embedded particles of zinc and copper compounds on the surface. The band gap of the film was measured to be 2.06 eV, lower than that of conventional g-C3N4. The material's formula closely resembles C3N, also known as bidimensional polyaniline.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2022)
Article
Quantum Science & Technology
Carlos Navas-Merlo, Juan Carlos Garcia-Escartin
Summary: Counterfactual quantum key distribution protocols allow establishing a common secret key using an insecure channel and authenticated public communication. However, these protocols are vulnerable to detector blinding attacks, which could compromise their security. Attackers can exploit easily accessible technology to launch such attacks, indicating the need for explicit countermeasures in experimental implementations.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Quantum Science & Technology
Juan Carlos Garcia-Escartin, Vicent Gimeno, Julio Jose Moyano-Fernandez
Summary: This paper proposes an iterative method for implementing quantum operations on photon states using Toponogov's theorem, which yields a locally optimal and converging operator that can be translated into an experimental optical setup using previous results.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Chemistry, Physical
Roberto C. Dante, Denisse G. Dante, Pablo Martin-Ramos, Pedro Chamorro-Posada, Maria Carmen Valsania
Summary: An iridescent carbon nitrogen film g-C3N4 was successfully synthesized via chemical vapor deposition, showing a unique layered microstructure with oak-leaf-shaped particles. The material exhibited optical and chemical properties similar to bulk material, but with enhanced structural colors, potentially promising for applications in optoelectronics and photovoltaic cells.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2022)
Article
Optics
Pedro Chamorro-Posada
Summary: The study presents label-free silicon nitride asymmetric double-microring resonators using highly accurate 3D vector modal techniques, exploring parameter space and proposing optimal geometric configurations, leading to significant performance improvements at small microring radii and enabling smaller footprint devices and larger scale integration.
Article
Chemistry, Inorganic & Nuclear
Pedro Chamorro-Posada, Roberto C. Dante, Jose Vazquez-Cabo, Denisse G. Dante, Pablo Martin-Ramos, Oscar Rubin-Lopez, Francisco M. Sanchez-Arevalo
Summary: This study presents a survey of the intermediates in the thermal synthesis of graphitic carbon nitride from urea. The analysis of the crystalline phases reveals the successive transformation of the precursor into different substances, and identifies melamine cyanurate as the ultimate precursor for obtaining graphitic carbon nitride. The study of the optical properties of the synthesized materials demonstrates the simultaneous production of an amorphous phase with a significant presence of melon oligomers. These findings are further supported by characterization techniques and theoretical studies.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Computer Science, Interdisciplinary Applications
Daniel Gomez Aguado, Vicent Gimeno, Julio Jose Moyano-Fernandez, Juan Carlos Garcia-Escartin
Summary: The QOptCraft package provides methods for solving common problems in quantum optics experiment design, including computing the evolution of quantum states of light in linear optical devices and generating random linear optical systems. The package is versatile and capable of effectively handling the evolution and design of multi-photon quantum states.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Omar Guillan-Lorenzo, Marcos Troncoso-Costas, David Alvarez-Outarelo, Francisco Javier Diaz-Otero, Juan Carlos Garcia-Escartin
Summary: Quantum random number generators theoretically provide completely unpredictable numbers perturbed only by measurement noise. The obtained data can be processed to yield a sequence of uniform binary random numbers unrelated to classical noise. This study analyzes the performance of optical QRNGs using three different arrangements: a homodyne detector measuring vacuum fluctuations, a homodyne detector measuring amplified spontaneous emission from an EDFA, and a spontaneous emission phase noise-based generator. The raw data is processed with a Toeplitz extractor, generating binary number sequences that pass the NIST Statistical Test Suite.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Alexandr B. Plachenov, Pedro Chamorro-Posada, Aleksei P. Kiselev
Summary: In this paper, simple closed-form expressions for tilted astigmatic wave beams and wavepackets, which are exact solutions of the wave equation, are constructed. They are derived through two different but equivalent methods, one based on a complex shift in the Bateman-type solutions and the other using their Lorentz transformation. Analytic expressions for the propagation invariants: energy, momentum, and orbital angular momentum of tilted waveobjects with general astigmatism, are also presented.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Alberto Santiago-Aliste, Eva Sanchez-Hernandez, Celia Andres-Juan, Pedro Chamorro-Posada, Guillermo Antorrena, Jesus Martin-Gil, Pablo Martin-Ramos
Summary: In this study, a F,O,S-codoped graphitic carbon nitride photocatalyst was synthesized and applied in the synthesis of benzoxazoles and benzimidazoles, achieving high yields of up to 90%. The results demonstrate the excellent photocatalytic performance and reusability of this F,O,S-codoped graphitic carbon nitride.
Article
Quantum Science & Technology
Themistoklis Chrysostomidis, Ioannis Roumpos, David Alvarez Outerelo, Marcos Troncoso-Costas, Valentina Moskalenko, Juan Carlos Garcia-Escartin, Francisco J. J. Diaz-Otero, Konstantinos Vyrsokinos
Summary: This paper presents the experimental evaluation of a quantum random number generator circuit fabricated on the InP platform for 300 minutes. The circuit layout includes a gain switched laser diode (LD) and a balanced Mach Zehnder Interferometer, which distributes light power properly to the two arms of an unbalanced MZI incorporating a 65.4 mm long spiral waveguide converting random phase fluctuations to power variations. The chip achieved a min-entropy of 0.5875 per bit after removing classical noise, resulting in a total aggregate bit rate of 6.11 Gbps. The recorded data set passed the 15-battery test NIST statistical test suite for all data sets.
EPJ QUANTUM TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
P. Chamorro-Posada, J. C. Garcia-Escartin
Summary: We study different quantum circuits for discriminating between two arbitrary quantum evolution operators. These circuits can be used to check whether two quantum operators are equal and estimate the fidelity measure of their closeness. The operator comparison is related to the SWAP test for discriminating two quantum states. We discuss possible laboratory implementations with light using recent experimental realizations of quantum superpositions of causal orders and hardware efficient realizations for noisy intermediate scale quantum computers. We also comment on potential applications in discriminating quantum communication channels and searching for simpler quantum circuits in quantum compilers.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2023)
Article
Materials Science, Multidisciplinary
Pablo Parellada, Vicent Gimeno Garcia, Julio Jose Moyano-Fernandez, Juan Carlos Garcia-Escartin
Summary: We present a necessary condition for photon state transformations in linear optical setups that preserve the total number of photons. Through an analysis of the algebra describing quantum evolution, we identify a conserved quantity that appears in all permissible optical transformations. We provide examples, numerical applications, and give three general no-go results, including the impossibility of certain deterministic transformations and restrictions for converting between different types of entanglement.
RESULTS IN PHYSICS
(2023)
Article
Mathematics, Interdisciplinary Applications
Javier Del-Pozo-Velazquez, Pedro Chamorro-Posada, Javier Manuel Aguiar-Perez, Maria Angeles Perez-Juarez, Pablo Casaseca-De-La-Higuera
Summary: Identification and monitoring of existing surface water bodies on Earth are important in various scientific disciplines and industries. This study establishes and validates an efficient method for surface water detection using high-resolution satellite images and data-driven techniques. The method, based on image segmentation, Quadtree algorithm, and fractal dimension, shows clear distinction between water and land, and it is simpler and computationally efficient compared to heavy artificial-intelligence-based methods. The average accuracy obtained in the case study was 96.03%, indicating high accuracy of the adopted method based on fractal dimension.
FRACTAL AND FRACTIONAL
(2022)
