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The temporal dynamics of large quantum systems perturbed weakly by a single excitation can give rise to unique phenomena at the quantum phase boundaries. Here, we develop a time-dependent model to study the temporal dynamics of a single…

Quantum Physics · Physics 2020-09-07 Li-Ping Yang , Zubin Jacob

Time-resolved photoluminescence (PL) is commonly used to track dynamics in a broad range of materials. Thus, the search for simplification of the acquisition of PL kinetics attracts continuous attention. This paper presents a new robust and…

Instrumentation and Detectors · Physics 2020-04-22 Jiri Junek , Lukas Ondic , Karel Zidek

We present an exact model of the detection statistics of a probabilistic source of photon pairs from which a fast, simple and precise method to measure the source's brightness and photon channel transmissions is demonstrated. We measure…

Quantum Physics · Physics 2011-12-30 Felix Bussieres , Joshua A. Slater , Nicolas Godbout , Wolfgang Tittel

The general matrix representation of a beam splitter array is presented. Each beam splitter has a transmission/reflection coefficient that determines the behavior of these individual devices and, in consequence, the whole system response.…

Quantum Physics · Physics 2024-03-18 Mario Ivan Estrada Delgado , Zurika Iveth Blanco Garcia

Quantum light is increasingly recognized as a promising resource for developing optical measurement techniques. Particular attention has been paid to enhancing the precision of the measurements beyond classical techniques by using…

Chemical Physics · Physics 2023-10-03 Yuta Fujihashi , Kuniyuki Miwa , Masahiro Higashi , Akihito Ishizaki

The photon density operator function is used to describe the propagation of single-photon pulses through a turbulent atmosphere. The effects of statistical properties of photon source and the effects of a random phase screen on the variance…

Quantum Physics · Physics 2007-05-23 G. P. Berman , A. A. Chumak

Semiconductor quantum-dot cavity systems are promising sources for solid-state based on-demand generation of single photons for quantum communication. Commonly, the spectral characteristics of the emitted single photon are fixed by system…

Mesoscale and Nanoscale Physics · Physics 2016-11-02 Dominik Breddermann , Dirk Heinze , Rolf Binder , Artur Zrenner , Stefan Schumacher

We demonstrate multiphoton interference using a resource-efficient frequency multiplexing scheme, suitable for quantum information applications that demand multiple indistinguishable and pure single photons. In our source,…

For the first time a method for realizing macroscopic quantum optical solitons is presented. Simultaneous photon-number and momentum squeezing is predicted using soliton propagation in an interferometer. Extraction of soliton pulses closer…

Quantum Physics · Physics 2009-10-31 M. J. Werner

Quantum states of light with many entangled photons are key resources for photonic quantum computing and quantum communication. In this work, we exploit a highly resource-efficient generation scheme based on a linear optical circuit…

We show how to obtain the photon distribution of a single-mode field using only avalanche photodetectors. The method is based on measuring the field at different quantum efficiencies and then inferring the photon distribution by…

Quantum Physics · Physics 2009-11-10 Andrea R. Rossi , Stefano Olivares , Matteo G. A. Paris

Two-photon absorption (TPA) and other nonlinear interactions of molecules with time-frequency-entangled photon pairs (EPP) has been predicted to display a variety of fascinating effects. Therefore, their potential use in practical…

Quantum Physics · Physics 2021-09-15 Michael G. Raymer , Tiemo Landes , Andrew H. Marcus

Photonic qubits play an instrumental role in the development of advanced quantum technologies, including quantum networking, boson sampling and measurement based quantum computing. A promising framework for the deterministic production of…

Quantum Physics · Physics 2023-11-28 Jan Ole Ernst , Juan-Rafael Alvarez , Thomas D. Barrett , Axel Kuhn

Reconstruction of photon statistics of optical states provide fundamental information on the nature of any optical field and find various relevant applications. Nevertheless, no detector that can reliably discriminate the number of incident…

Quantum Physics · Physics 2009-11-13 M. Genovese , M. Gramegna , G. Brida , M. Bondani , G. Zambra , A. Andreoni , A. R. Rossi , M. G. A. Paris

We propose and demonstrate a method for quantum-state tomography of qudits encoded in the quantum polarization of $N$-photon states. This is achieved by distributing $N$ photons nondeterministically into three paths and their subsequent…

Quantum Physics · Physics 2016-09-14 Ömer Bayraktar , Marcin Swillo , Carlota Canalias , Gunnar Björk

We investigate fundamental bounds on the ability to determine photon number distribution and other related quantities from tomographically incomplete measurements with an array of M detectors that can only distinguish the absence or…

Quantum Physics · Physics 2026-03-03 Jaromír Fiurášek

We present a theoretical analysis of the intensity autocorrelation for the spontaneous emission from a planar ensemble of self-assembled quantum dots. Using the quantum jump approach, we numerically simulate the evolution of the system and…

Mesoscale and Nanoscale Physics · Physics 2016-03-09 Fitria Miftasani , Paweł Machnikowski

We investigate a two-level atom in the field of a strong laser pulse. The resulting time-dependent polarization is the source of a radiation the frequency components of which are essentially harmonics of the driving field's carrier…

Quantum Physics · Physics 2016-09-13 Ákos Gombkötő , Attila Czirják , Sándor Varró , Péter Földi

A charged particle passing through or by an optical fiber induces emission of light guided by the fiber. The formula giving the spontaneous emission amplitude are given in the general case when the particle trajectory is not parallel to the…

High Energy Physics - Phenomenology · Physics 2009-11-11 X. Artru , C. Ray

One of the primary challenges of photonic quantum information processing is the on-demand preparation of multiple single-photon-level quantum states from probabilistic photon pair sources. Motivated by recent developments in…

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