Wave-particle duality of single-photon states

1992 ◽  
Vol 22 (12) ◽  
pp. 1435-1447 ◽  
Author(s):  
Partha Ghose ◽  
Dipankar Home
Keyword(s):  
Single Photon ◽  
Wave Particle Duality ◽  
Photon States

scholarly journals Quantum Filtering Equations for a System Driven by Nonclassical Fields

2018 ◽  
Vol 25 (02) ◽  
pp. 1850007 ◽  
Author(s):  
Anita Da̧browska
Keyword(s):  
Quantum System ◽  
Coherent States ◽  
Single Photon ◽  
Photon Counting ◽  
Stochastic Evolution ◽  
Input Output ◽  
Nonclassical States ◽  
Cascade System ◽  
Unitary Evolution ◽  
Photon States

Using Gardiner and Collet’s input-output model and the concept of cascade system, we determine the filtering equation for a quantum system driven by light in some specific nonclassical states. The quantum system and electromagnetic field are described by making use of quantum stochastic unitary evolution. We consider two examples of the nonclassical states of field: a combination of vacuum and single photon states and a mixture of two coherent states. The stochastic evolution conditioned on the results of the photon counting and quadrature measurements is described.

Interferometry-Based Astronomical Imaging Using Nonlocal Interference with Single-Photon States

2021 ◽  
Author(s):  
Matthew Brown ◽  
Valerian Thiel ◽  
Markus Allgaier ◽  
Michael Raymer ◽  
Brian Smith ◽  
...  
Keyword(s):  
Single Photon ◽  
Astronomical Imaging ◽  
Photon States

Quantum Light Generation and Superradiance Effects in the Active Microcavity

1998 ◽  
Vol 07 (01) ◽  
pp. 121-130 ◽  
Author(s):  
F. de Martini ◽  
O. Jedrkiewicz ◽  
P. Mataloni
Keyword(s):  
Active Medium ◽  
Single Photon ◽  
Fabry Perot ◽  
Relativistic Causality ◽  
Light Generation ◽  
Photon States ◽  
Collective Emission ◽  
Coherence Area ◽  
Transverse Interaction ◽  
Classical Radiation

The process of generation of non-classical radiation in an active Fabry-Perot dye microcavity, under femtosecond excitation, has been investigated. Single photon states, with a non-classical sub-Poissonian distribution have been generated after the excitation of a small number of active molecules, located between the two mirrors. By multiple excitation of the active medium, collective emission phenomena are expected because of the strong superradiant coupling occurring within the transverse coherence area of the microcavity. In particular, we have experimentally verified the principle of relativistic causality within the process of two-dipole superradiance by transverse interaction, in condition of strong microcavity confinement.

scholarly journals Harnessing temporal modes for multi-photon quantum information processing based on integrated optics

2017 ◽  
Vol 375 (2099) ◽  
pp. 20160244 ◽  
Author(s):  
G. Harder ◽  
V. Ansari ◽  
T. J. Bartley ◽  
B. Brecht ◽  
C. Silberhorn
Keyword(s):  
Integrated Optics ◽  
Frequency Conversion ◽  
Quantum Information Processing ◽  
Single Photon ◽  
Photon Number ◽  
Integrated Optics Devices ◽  
Sum Frequency ◽  
Temporal Modes ◽  
Quantum Technology ◽  
Photon States

In the last few decades, there has been much progress on low loss waveguides, very efficient photon-number detectors and nonlinear processes. Engineered sum-frequency conversion is now at a stage where it allows operation on arbitrary temporal broadband modes, thus making the spectral degree of freedom accessible for information coding. Hereby the information is often encoded into the temporal modes of a single photon. Here, we analyse the prospect of using multi-photon states or squeezed states in different temporal modes based on integrated optics devices. We describe an analogy between mode-selective sum-frequency conversion and a network of spatial beam splitters. Furthermore, we analyse the limits on the achievable squeezing in waveguides with current technology and the loss limits in the conversion process. This article is part of the themed issue ‘Quantum technology for the 21st century’.

Experimental optimal maximum-confidence discrimination and optimal unambiguous discrimination of two mixed single-photon states

2011 ◽  
Vol 83 (5) ◽  
Author(s):  
Gesine A. Steudle ◽  
Sebastian Knauer ◽  
Ulrike Herzog ◽  
Erik Stock ◽  
Vladimir A. Haisler ◽  
...  
Keyword(s):  
Single Photon ◽  
Unambiguous Discrimination ◽  
Photon States

Quantum nonlocality of single photon states

1995 ◽  
Vol 209 (1-2) ◽  
pp. 1-5 ◽  
Author(s):  
Dipankar Home ◽  
Girish S. Agarwal
Keyword(s):  
Single Photon ◽  
Quantum Nonlocality ◽  
Photon States
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