scholarly journals Gaussian-Wigner distributions and hierarchies of nonclassical states in quantum optics: The single-mode case

1997 ◽  
Vol 56 (6) ◽  
pp. 5042-5052 ◽  
Author(s):  
Arvind ◽  
N. Mukunda ◽  
R. Simon
Keyword(s):  
Quantum Optics ◽  
Single Mode ◽  
Nonclassical States ◽  
Wigner Distributions

Observation of Dicke cooperativity in magnetic interactions

Science ◽  
2018 ◽  
Vol 361 (6404) ◽  
pp. 794-797 ◽  
Author(s):  
Xinwei Li ◽  
Motoaki Bamba ◽  
Ning Yuan ◽  
Qi Zhang ◽  
Yage Zhao ◽  
...  
Keyword(s):  
Quantum Optics ◽  
Body Problem ◽  
Light Field ◽  
Condensed Matter ◽  
Single Mode ◽  
Magnetic Interactions ◽  
Many Body ◽  
Matter Interaction ◽  
Magnetic Solid ◽  
Vacuum Rabi Splitting

The interaction ofNtwo-level atoms with a single-mode light field is an extensively studied many-body problem in quantum optics, first analyzed by Dicke in the context of superradiance. A characteristic of such systems is the cooperative enhancement of the coupling strength by a factor of N. In this study, we extended this cooperatively enhanced coupling to a solid-state system, demonstrating that it also occurs in a magnetic solid in the form of matter-matter interaction. Specifically, the exchange interaction ofNparamagnetic erbium(III) (Er3+) spins with an iron(III) (Fe3+) magnon field in erbium orthoferrite (ErFeO3) exhibits a vacuum Rabi splitting whose magnitude is proportional to N. Our results provide a route for understanding, controlling, and predicting novel phases of condensed matter using concepts and tools available in quantum optics.

SU(1,1) SQUEEZED STATES AS DAMPED OSCILLATORS

1989 ◽  
Vol 03 (16) ◽  
pp. 1213-1220 ◽  
Author(s):  
E. CELEGHINI ◽  
M. RASETTI ◽  
M. TARLINI ◽  
G. VITIELLO
Keyword(s):  
Quantum Optics ◽  
Coherent States ◽  
Single Mode ◽  
Explicit Construction ◽  
Squeezed States ◽  
Two Photon ◽  
Generalized Coherent States ◽  
Photon Process ◽  
Damped Oscillators ◽  
Damped Oscillator

The conventional squeezed states of quantum optics, which can be thought of as generalized coherent states for the algebra SU(1,1), are dynamically generated by single-mode hamiltonians characterized by two-photon process interactions. By the explicit construction of a (highly non-linear) faithful realization of the group [Formula: see text] of automorphisms of SU(1,1), such hamiltonians are shown to be equivalent — up just to elements of [Formula: see text] — to that describing quantum mechanically a damped oscillator.

scholarly journals Mesoscale cavities in hollow-core waveguides for quantum optics with atomic ensembles

Nanophotonics ◽  
2016 ◽  
Vol 5 (3) ◽  
pp. 392-408 ◽  
Author(s):  
C.M. Haapamaki ◽  
J. Flannery ◽  
G. Bappi ◽  
R. Al Maruf ◽  
S.V. Bhaskara ◽  
...  
Keyword(s):  
Nonlinear Optics ◽  
Quantum Optics ◽  
Light Propagation ◽  
Single Photon ◽  
Single Mode ◽  
Bragg Gratings ◽  
Single Photons ◽  
Optical Nonlinearities ◽  
Hollow Core ◽  
Atomic Ensembles

AbstractSingle-mode hollow-core waveguides loaded with atomic ensembles offer an excellent platform for light–matter interactions and nonlinear optics at low photon levels. We review and discuss possible approaches for incorporating mirrors, cavities, and Bragg gratings into these waveguides without obstructing their hollow cores. With these additional features controlling the light propagation in the hollow-core waveguides, one could potentially achieve optical nonlinearities controllable by single photons in systems with small footprints that can be integrated on a chip. We propose possible applications such as single-photon transistors and superradiant lasers that could be implemented in these enhanced hollow-core waveguides.

Thermal counterparts of nonclassical states in quantum optics

1990 ◽  
Vol 41 (7) ◽  
pp. 3969-3974 ◽  
Author(s):  
S. Chaturvedi ◽  
R. Sandhya ◽  
V. Srinivasan ◽  
R. Simon
Keyword(s):  
Quantum Optics ◽  
Nonclassical States

scholarly journals Single-Mode Parametric-Down-Conversion States with 50 Photons as a Source for Mesoscopic Quantum Optics

2016 ◽  
Vol 116 (14) ◽  
Author(s):  
Georg Harder ◽  
Tim J. Bartley ◽  
Adriana E. Lita ◽  
Sae Woo Nam ◽  
Thomas Gerrits ◽  
...  
Keyword(s):  
Quantum Optics ◽  
Single Mode ◽  
Parametric Down Conversion ◽  
Down Conversion

scholarly journals FRACTIONAL HADAMARD TRANSFORM WITH CONTINUOUS VARIABLES IN THE CONTEXT OF QUANTUM OPTICS

2011 ◽  
Vol 09 (04) ◽  
pp. 1147-1155
Author(s):  
LI-YUN HU ◽  
XUE-XIANG XU ◽  
SHAN-JUN MA
Keyword(s):  
Quantum Optics ◽  
Single Mode ◽  
Entangled State ◽  
Hadamard Transform ◽  
Fractional Operator ◽  
Entangled State Representation ◽  
Continuous Variables ◽  
State Representation

We introduce the quantum fractional Hadamard transform with continuous variables. It is found that the corresponding quantum fractional Hadamard operator can be decomposed into a single-mode fractional operator and two single-mode squeezing operators. This is extended to the entangled case by using the bipartite entangled state representation. The new transformation presents more flexibility to represent signals in the fractional Hadamard domain with extra freedom provided by an angle and two-squeezing parameters.

Introduction to Quantum Optics

2009 ◽  
Author(s):  
Gilbert Grynberg ◽  
Alain Aspect ◽  
Claude Fabre ◽  
Claude Cohen-Tannoudji
Keyword(s):  
Quantum Optics
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